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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D. C. 20549
Form 10-K

(Mark One)
☒     ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the Fiscal Year Ended December 31, 2021
or
☐    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
For the transition period from__________to__________
Commission File Number: 001-31240
nem-20211231_g1.jpg
NEWMONT CORPORATION
(Exact name of registrant as specified in its charter)
Delaware84-1611629
(State or Other Jurisdiction of Incorporation or Organization)(I.R.S. Employer Identification No.)
6900 E Layton Ave
Denver, Colorado
80237
(Address of Principal Executive Offices)(Zip Code)
Registrant’s telephone number, including area code (303) 863-7414
Securities registered or to be registered pursuant to Section 12(b) of the Act.
Title of each classTrading SymbolName of each exchange on which registered
Common stock, par value $1.60 per shareNEMNew York Stock Exchange
Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.     ☒ Yes     ☐ No
Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Exchange Act.     ☐ Yes     ☒ No
Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.     ☒ Yes     ☐ No
Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).     ☒ Yes     ☐ No
Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12-b2 of the Exchange Act.
Large accelerated filer
Accelerated filer
Non-accelerated filer
Smaller reporting company
Emerging growth company
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.     ☐
Indicate by check mark whether the registrant is a shell company (as defined in Rule 12-b2 of the Exchange Act).     ☐ Yes     ☒ No
Indicate by check mark whether the Registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.     ☒
At June 30, 2021, the aggregate market value of the registrant’s voting and non-voting common equity held by non-affiliates of the registrant was $50,629,300,966 based on the closing sale price as reported on the New York Stock Exchange. There were 792,502,327 shares of common stock outstanding on February 17, 2022.
DOCUMENTS INCORPORATED BY REFERENCE
Portions of Registrant’s definitive Proxy Statement for the Registrant’s 2022 Annual Stockholders Meeting will be filed no later than 120 days after the close of the Registrant's fiscal year ended December 31, 2021, are incorporated by reference into Part III of this report.


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NEWMONT CORPORATION
2021 RESULTS AND HIGHLIGHTS
(unaudited, in millions, except per share, per ounce and per pound)
Year Ended December 31,
202120202019
Financial Results:
Sales$12,222 $11,497 $9,740 
Gold$10,543 $10,350 $9,049 
Copper$295 $155 $210 
Silver$651 $510 $253 
Lead$172 $134 $85 
Zinc$561 $348 $143 
Costs applicable to sales (1)
$5,435 $5,014 $5,195 
Gold$4,628 $4,408 $4,663 
Copper$143 $107 $145 
Silver$332 $201 $181 
Lead$76 $77 $77 
Zinc$256 $221 $129 
Net income (loss) from continuing operations $176 $2,628 $2,956 
Net income (loss) $233 $2,791 $2,884 
Net income (loss) from continuing operations attributable to Newmont stockholders
$1,109 $2,666 $2,877 
Per common share, diluted:
Net income (loss) from continuing operations attributable to Newmont stockholders$1.39 $3.31 $3.91 
Net income (loss) attributable to Newmont stockholders$1.46 $3.51 $3.81 
Adjusted net income (loss) (2)
$2,371 $2,140 $970 
Adjusted net income (loss) per share, diluted (2)
$2.96 $2.66 $1.32 
Earnings before interest, taxes and depreciation and amortization (2)
$3,705 $5,751 $5,954 
Adjusted earnings before interest, taxes and depreciation and amortization (2)
$5,963 $5,537 $3,734 
Net cash provided by (used in) operating activities of continuing operations
$4,266 $4,890 $2,876 
Free Cash Flow (2)
$2,613 $3,588 $1,413 
Regular cash dividends paid per common share$2.20 $1.04 $0.56 
Regular cash dividends declared per common share$2.20 $1.45 $0.56 
Special dividend declared per common share related to the 2019 Newmont Goldcorp transaction$— $— $0.88 
____________________________
(1)Excludes Depreciation and amortization and Reclamation and remediation.
(2)See “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis.

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NEWMONT CORPORATION
2021 RESULTS AND HIGHLIGHTS
(unaudited, in millions, except per share, per ounce and per pound)
Year Ended December 31,
202120202019
Operating Results:
Consolidated gold ounces (thousands):
Produced5,884 5,824 6,392 
Sold5,897 5,831 6,465 
Attributable gold ounces (thousands): 
Produced (1)
5,971 5,905 6,291 
Sold (2)
5,660 5,550 6,076 
Consolidated and attributable gold equivalent ounces - other metals (thousands): (3)
Produced1,252 1,021 624 
Sold1,258 1,062 621 
Consolidated and attributable - other metals:
Produced copper (million pounds)71 56 79 
Sold copper (million pounds)69 56 80 
Produced silver (thousand ounces)31,375 27,801 15,860 
Sold silver (thousand ounces)32,237 28,596 15,987 
Produced lead (million pounds)177 179 108 
Sold lead (million pounds)173 185 108 
Produced zinc (million pounds)435 381 187 
Sold zinc (million pounds)433 407 179 
Average realized price:
Gold (per ounce) $1,788 $1,775 $1,399 
Copper (per pound) $4.29 $2.78 $2.63 
Silver (per ounce)$20.19 $17.86 $15.79 
Lead (per pound)$1.00 $0.72 $0.79 
Zinc (per pound)$1.30 $0.86 $0.80 
Consolidated costs applicable to sales: (4)(5)
Gold (per ounce) $785 $756 $721 
Gold equivalent ounces - other metals (per ounce) (3)
$640 $571 $858 
All-in sustaining costs: (5)
Gold (per ounce) $1,062 $1,045 $966 
Gold equivalent ounces - other metals (per ounce) (3)
$900 $858 $1,222 
____________________________
(1)Attributable gold ounces produced includes 325, 362 and 287 ounces for the years ended December 31, 2021, 2020 and 2019, respectively, related to the Pueblo Viejo mine, which is 40% owned by Newmont and accounted for as an equity method investment.
(2)Attributable gold ounces sold excludes ounces related to the Pueblo Viejo mine, which is 40% owned by Newmont and accounted for as an equity method investment.
(3)For the definition of gold equivalent ounces see “Results of Consolidated Operations" within Part II, Item 7, Management's Discussion and Analysis.
(4)Excludes Depreciation and amortization and Reclamation and remediation.
(5)See “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis.
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Highlights (dollars in millions, except per share, per ounce and per pound amounts)
Net income: Delivered Net income (loss) from continuing operations attributable to Newmont stockholders of $1,109 or $1.39 per diluted share, a decrease of $1,557 from the prior year primarily due to higher Reclamation and remediation expense mainly related to non-operating Yanacocha sites, the Loss on assets held for sale in connection with the Conga mill assets, lower Gain on asset and investment sales, and higher income tax expense, partially offset by higher average realized metal prices and higher sales volumes as well as lower Care and maintenance due to certain operations being placed into care and maintenance or experiencing reduced operations in response to the COVID-19 pandemic during 2020.
Adjusted net income: Delivered Adjusted net income of $2,371 or $2.96 per diluted share, an increase of $0.30 from the prior year (see “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis).
Adjusted EBITDA: Generated $5,963 in Adjusted EBITDA, an increase of 8% from the prior year (see “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis).
Cash Flow: Reported Net cash provided by (used in) operating activities of continuing operations of $4,266 for the year ended December 31, 2021, a decrease of 13% from the prior year, and free cash flow of $2,613 (see “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis).
Environmental, Social and Governance ("ESG"): Issued a sustainability-linked bond, representing a further step in aligning Newmont’s financing strategy with certain key ESG commitments; Validated and approved climate targets set by the Science-Based Targets Initiative ("SBTi"), published inaugural Climate Report and advanced target pathway; Announced strategic alliance with Caterpillar Inc. to develop and deliver electric autonomous mining systems to reduce emissions supporting Newmont’s climate change targets and ambition; Recognized as a co-leader of the Mining and Metals sector by S&P Global; Continued to support host communities, governments and employees combat the COVID-19 pandemic through robust health and safety protocols, vaccine support and mandates, along with in-kind support and financial aid from the Company’s Global Community Support Fund.
Portfolio improvements: Acquired the remaining 85.1% ownership of GT Gold Corporation; approved full funding of the Ahafo North project in July 2021. In February 2022, the Company acquired the 43.65% noncontrolling interest in Yanacocha held by Compañia de Minas Buenaventura S.A.A., increasing the Company’s ownership interest to 95%.
Attributable gold production: Produced 6.0 million ounces of gold, an increase of 1% over the prior year.
Financial strength: Ended the year with $5.0 billion of consolidated cash and approximately $8.0 billion of liquidity; increased total dividend declared for the period to $2.20 per share; completed $525 from the $1 billion buyback program.
Our global project pipeline
Newmont’s capital-efficient project pipeline supports stable production with improving margins and mine life. Near-term development capital projects are presented below. Additional projects represent incremental improvements to production and cost guidance.
Ahafo North, Africa. The Board of Directors approved full funding for the Ahafo North project in July 2021. This project expands our existing footprint in Ghana with four open pit mines and a stand-alone mill located approximately 30 kilometers from the Company’s Ahafo South operations and will deliver value through the open pit mining and processing of over three million ounces of gold over a 13-year mine life. The project is expected to add between 275,000 and 325,000 ounces per year for the first full five years of production. Capital costs for the project are estimated to be between $750 and $850 with an expected construction completion date in the late 2023 and commercial production in 2024. Development capital costs (excluding capitalized interest) since approval were $67, of which all related to 2021.
Tanami Expansion 2, Australia. This project secures Tanami’s future as a long-life, low cost producer with potential to extend mine life to 2040 through the addition of a 1,460 meter hoisting shaft and supporting infrastructure to achieve higher production and provide a platform for future growth. The expansion is expected to increase average annual gold production by approximately 150,000 to 200,000 ounces per year for the first five years beginning in 2024, and is expected to reduce operating costs by approximately 10 percent. Capital costs for the project are estimated to be between $850 and $950 with an expected commercial production date in 2024. Development capital costs (excluding capitalized interest) since approval were $284, of which $158 related to 2021.
We manage our wider project portfolio to maintain flexibility to address the development risks associated with our projects including permitting, local community and government support, engineering and procurement availability, technical issues, escalating costs and other associated risks that could adversely impact the timing and costs of certain opportunities.
COVID-19 Update
The outbreak of coronavirus (“COVID-19”) was declared a pandemic by the World Health Organization in March 2020. COVID-19 poses public health risks and continues to impact the global economy, disrupt global supply chains and workforce participation. Our operations continue to be challenged by these impacts and a range of external factors related to the pandemic that
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are not within our control. Newmont continues to maintain wide-ranging protective measures for its workforce and neighboring communities, including screening, physical distancing, deep cleaning and avoiding exposure for at-risk individuals.
Refer to "Environmental, Social and Governance ("ESG")" within Part I, Item 1, Business and “Results of Consolidated Operations,” “Liquidity and Capital Resources” and “Non-GAAP Financial Measures” within Part II, Item 7, Management’s Discussion and Analysis for additional information about the impact of COVID-19 on our business and operations. For a discussion of COVID-19 related risks to the business, see Part I, Item 1A, Risk Factors.
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PART I
ITEM 1.       BUSINESS (dollars in millions, except per share, per ounce and per pound amounts)
Introduction
Newmont Corporation is primarily a gold producer with significant operations and/or assets in the United States, Canada, Mexico, Dominican Republic, Peru, Suriname, Argentina, Chile, Australia and Ghana. At December 31, 2021, Newmont had attributable proven and probable gold reserves of 92.8 million ounces, measured and indicated gold resources of 68.3 million ounces and an aggregate land position of approximately 24,300 square miles (62,800 square kilometers). Newmont is also engaged in the production of copper, silver, lead and zinc. Newmont Corporation was incorporated in 1921 and completed its 100th year in 2021. As the world’s leading gold company, Newmont remains committed to creating value and improving lives through sustainable and responsible mining.
Newmont’s corporate headquarters are in Denver, Colorado, USA. In this report, “Newmont,” the “Company,” “our” and “we” refer to Newmont Corporation together with our affiliates and subsidiaries, unless the context otherwise requires.
On April 18, 2019, we completed the acquisition of Goldcorp, Inc. (“Goldcorp”) (“the Newmont Goldcorp transaction”). Results of Goldcorp for the period April 18 to December 31, 2019 and the years ended December 31, 2020 and December 31, 2021 are included in this report. For further information, see Note 3 to the Consolidated Financial Statements.
On July 1, 2019, we completed the formation of Nevada Gold Mines (“NGM”), in which we hold a 38.5% interest. As part of the formation of NGM, we contributed Carlin, Phoenix, Twin Creeks and Long Canyon (“existing Nevada mining operations”) in exchange for our 38.5% interest. Historically, our Phoenix operations in the United States produced copper as a co-product up until the formation of NGM, effective July 1, 2019 (the “effective date”), at which point copper became a by-product. Results of our existing Nevada mining operations for the six months ended June 30, 2019 are included in this report. NGM is included for the period July 1 to December 31, 2019 and the years ended December 31, 2020 and December 31, 2021, which are presented at our 38.5% proportionate share, unless otherwise indicated. For further information, see Note 1 to the Consolidated Financial Statements.
Segment Information
Our operations are organized in five geographic regions: North America, South America, Australia, Africa and Nevada. Our North America segment consists primarily of Cripple Creek & Victor (“CC&V”) in the United States of America (“U.S.” or “USA”), Musselwhite, Porcupine and Éléonore in Canada and Peñasquito in Mexico. Our South America segment consists primarily of Yanacocha in Peru, Merian in Suriname, Cerro Negro in Argentina and our 40% equity interest in the Pueblo Viejo mine in the Dominican Republic. Our Australia segment consists primarily of Boddington and Tanami in Australia. Our Africa segment consists primarily of Ahafo and Akyem in Ghana. Our Nevada segment consists of our 38.5% interest in NGM.
For the year ended December 31, 2019, our Nevada segment included Carlin, Phoenix, Twin Creeks and Long Canyon in the USA, which were contributed to NGM on July 1, 2019. See Note 1 to the Consolidated Financial Statements for further information.
At December 31, 2019, our Red Lake mine in our North America segment and Kalgoorlie mine in our Australia segment were held for sale and subsequently were sold in the first quarter of 2020. See Note 10 to the Consolidated Financial Statements for further information on our asset sales.
See Item 1A, Risk Factors, below, and Note 4 to the Consolidated Financial Statements for further information relating to our reportable segments. Refer to Note 5 to the Consolidated Financial Statements for information relating to domestic and export sales and lack of dependence on a limited number of customers.
Products
References in this report to “attributable” means that portion of gold, copper, silver, lead or zinc produced, sold or included in proven and probable reserves and measured, indicated and inferred resources based on our proportionate ownership, unless otherwise noted.
Gold
General. We had consolidated gold production from continuing operations of 5.9 million ounces (5.6 million attributable gold ounces) in 2021, 5.8 million ounces (5.5 million attributable gold ounces) in 2020 and 6.4 million ounces (6.0 million attributable gold ounces) in 2019. Additionally, the Pueblo Viejo mine, which is 40% owned by Newmont and accounted for as an equity method investment, produced 0.3, 0.4, and 0.3 million attributable gold ounces for the years ended December 31, 2021, 2020 and 2019, respectively. Of our 2021 consolidated gold production, approximately 27% came from North America, 16% from South America, 20% from Australia, 15% from Africa and 22% from Nevada.
For 2021, 2020 and 2019, 86%, 90% and 93%, respectively, of our Sales were attributable to gold. Most of our Sales come from the sale of refined gold. The end product at our gold operations, however, is generally doré bars. Doré is an alloy consisting primarily of gold but also containing silver and other metals. Doré is sent to refiners to produce bullion that meets the required market
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standard of 99.95% gold. Under the terms of our refining agreements, the doré bars are refined for a fee, and our share of the refined gold and the separately-recovered silver is credited to our account or delivered to buyers. A portion of gold sold from Peñasquito in North America, Boddington in Australia and NGM and Phoenix (until the formation of NGM) in Nevada is sold in a concentrate containing other metals such as copper, silver, lead and/or zinc.
Gold Uses. Gold generally is used for fabrication or investment. Fabricated gold has a variety of end uses, including jewelry, electronics, dentistry, industrial and decorative uses, medals, medallions and official coins. Gold investors buy gold bullion, official coins and jewelry.
Gold Supply. A combination of mine production, recycling and draw-down of existing gold stocks held by governments, financial institutions, industrial organizations and private individuals make up the annual gold supply. Based on public information available, for the years 2019 through 2021, mine production has averaged approximately 75% of the annual gold supply with the remainder primarily sourced from recycled gold.
Gold Price. The following table presents the annual high, low and average daily afternoon London Bullion Market Association (“LBMA”) Gold Price over the past ten years on the London Bullion Market ($/ounce):
YearHighLowAverage
2022 (through February 17, 2022)
$1,893 $1,788 $1,822 
2021$1,943 $1,684 $1,799 
2020$2,067 $1,474 $1,770 
2019$1,546 $1,270 $1,393 
2018$1,355 $1,178 $1,268 
2017$1,346 $1,151 $1,257 
2016$1,366 $1,077 $1,251 
2015$1,296 $1,049 $1,160 
2014$1,385 $1,142 $1,266 
2013$1,694 $1,192 $1,411 
2012$1,792 $1,540 $1,669 
On February 17, 2022, the afternoon LBMA gold price was $1,893 per ounce.
See Note 2 to the Consolidated Financial Statements for information on how we recognize revenue for gold sales from doré production.
Other Co-product Metals
Generally, if a metal expected to be mined represents more than 10% to 20% of the life of mine sales value of all the metal expected to be mined, the metal is considered a co-product and recognized as Sales in the Consolidated Financial Statements.
In 2021 and 2020, copper production at Boddington and silver, lead and zinc production at Peñasquito are considered co-products. In 2019, copper production at Boddington and Phoenix (until the formation of NGM) were considered co-products. Copper, silver, lead and zinc sales are generally in the form of concentrate that is sold to smelters for further treatment and refining.
The following table details consolidated co-product production and the percentage of Sales that was attributable to copper, silver, lead and zinc for the years ended 2021, 2020, and 2019:
202120202019
Co-product ProductionSales as % of Total SalesCo-product ProductionSales as % of Total SalesCo-product ProductionSales as % of Total Sales
Copper (pounds / millions) (1)
71%56%79%
Silver (ounces / millions) (2)
31.4%27.8%15.9%
Lead (pounds / millions) (2)
177%179 %108%
Zinc (pounds / millions) (2)
435%381%187%
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(1)All of our 2021 and 2020 copper co-product production came from Australia; In 2019, all of our copper co-product production came from Australia and Phoenix (until the formation of NGM).
(2)All of our 2021, 2020 and 2019 silver, lead and zinc co-product production came from North America.
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By-product Metals
If a metal expected to be mined falls below the co-product sales value percentages, the metal is considered a by-product. Revenues from by-product sales, which are immaterial, are credited to Costs applicable to sales in the Consolidated Financial Statements.
Aside from the co-product sales at Boddington and Peñasquito, copper and silver are produced as a by-product at all other Newmont sites.
Gold and Other Metals Processing Methods
Doré. Gold is extracted from naturally-oxidized ores by either milling or heap leaching, depending on the amount of gold contained in the ore, the amenability of the ore to treatment and related capital and operating costs. Higher grade oxide ores are generally processed through mills, where the ore is ground into a fine powder and mixed with water into a slurry, which then passes through a carbon-in-leach circuit to recover the gold. Lower grade oxide ores are generally processed using heap leaching. Heap leaching consists of stacking crushed or run-of-mine ore on impermeable, synthetically lined pads where a weak cyanide solution is applied to the surface of the heap to dissolve the gold contained within the ore. In both cases, the gold-bearing solution is then collected and pumped to process facilities to remove the gold by collection on carbon or by zinc precipitation.
Gold contained in ores that are not naturally-oxidized can be directly milled if the gold is liberated and amenable to cyanidation, generally known as free milling ores. Ores that are not amenable to cyanidation, known as refractory ores, require more costly and complex processing techniques than oxide or free milling ore. Higher grade refractory ores are processed through either roasters or autoclaves. Roasters heat finely ground ore to a high temperature, burn off the carbon and oxidize the sulfide minerals that prevent efficient leaching. Autoclaves use heat, oxygen and pressure to oxidize sulfide ores.
Some gold sulfide ores may be processed through a flotation plant. In flotation, ore is finely ground, turned into slurry, then placed in a tank known as a flotation cell. Chemicals are added to the slurry causing the gold-containing sulfides to attach to air bubbles and float to the top of the tank. The sulfides are removed from the cell and converted into a concentrate that can then be processed in an autoclave or roaster to recover the gold.
Concentrate. At Peñasquito, sulfide ore is delivered to a crushing and grinding plant which feeds a sulfide processing plant. The sulfide processing plant primarily comprises lead and zinc flotation stages. In the lead and zinc flotation, the slurry is conditioned with reagents to activate the desired minerals and produce lead and zinc concentrate. The lead concentrate is highly enriched in gold and silver, with a smaller fraction of the precious metal recovered in the zinc concentrate. The resulting concentrate is sold to smelters or traders for further processing.
At Boddington and Phoenix (until the formation of NGM), ore containing copper and gold is crushed to a coarse size at the mine and then transported via conveyor to a process plant, where it is further crushed and then finely ground as a slurry. The ore is initially treated by successive stages of flotation resulting in a copper/gold concentrate containing approximately 15% to 20% copper. The flotation tailings have a residual gold content that is recovered in a carbon-in-leach circuit.
Competition
The top 10 producers of gold comprise approximately twenty-five percent of total worldwide mined gold production. We currently rank as the top gold producer with approximately five percent of estimated total worldwide mined gold production. Our competitive position is based on the size and grade of our ore bodies anchored in favorable mining jurisdictions and our ability to manage costs compared with other producers. We have a diverse portfolio of mining operations with varying ore grades and cost structures. Our costs are driven by the location, grade and nature of our ore bodies, and the level of input costs, including energy, labor and equipment. The metals markets are cyclical, and our ability to maintain our competitive position over the long term is based on our ability to acquire and develop quality deposits, hire and retain a skilled workforce, and to manage our costs.
Licenses and Concessions
Other than operating licenses for our mining and processing facilities, there are no third party patents, licenses or franchises material to our business. In many countries, however, we conduct our mining and exploration activities pursuant to concessions granted by, or under contracts with, the host government. These countries include, among others, the United States, Canada, Mexico, Peru, Suriname, Argentina, Australia and Ghana. The concessions and contracts are subject to the political risks associated with the host country. See Item 1A, Risk Factors, below for further information.
Condition of Physical Assets and Insurance
Our business is capital intensive and requires ongoing capital investment for the replacement, modernization or expansion of equipment and facilities. See “Results of Consolidated Operations" and "Liquidity and Capital Resources" within Part II, Item 7, Management’s Discussion and Analysis, for further information.
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We maintain insurance policies against property loss and business interruption and insure against risks that are typical in the operation of our business, in amounts that we believe to be reasonable. Such insurance, however, contains exclusions and limitations on coverage, particularly with respect to environmental liability and political risk. There can be no assurance that claims would be paid under such insurance policies in connection with a particular event. See Item 1A, Risk Factors, below for further information.
Environmental, Social and Governance ("ESG")
ESG Overview. Focusing on leading environmental, social and governance practices has been a core part of Newmont’s business for more than 30 years. Widely recognized for our principled ESG practices, we have been consistently ranked as a leader in the mining and metal sector S&P Global, and we have been listed on the Dow Jones Sustainability World Index (“DJSI World”) since 2007.
ESG is a key part of how we make investment decisions and central to our culture and purpose to create value and improve lives through sustainable and responsible mining. Sustainability and safety are integrated into the business at all levels of the organization through our global policies, standards, strategies, business plans and remuneration plans.
ESG Stakeholder Engagement. We engage regularly with relevant stakeholders, who we consider to be any person or organization potentially impacted by our activities or influential to our success, which allows us to gain a greater understanding of their needs, interests and perspectives while, at the same time, encouraging shared decision making to promote mutually beneficial outcomes. These engagements also inform what information is most useful for stakeholders for the purposes of our non-financial reporting. Newmont also engages with a variety of organizations at a global, regional, national and local level to adhere to high standards of governance, social and environmental policies and performance. These memberships and voluntary commitments reflect our values, support our approach to working collaboratively on best practices across several key matters and allow external stakeholders to hold us accountable. Our participation in industry initiatives, wherein we often take a leadership role, allows us to inform and influence global standards and practices, as well as gain insight into emerging expectations and issues.
ESG Reporting. We believe that transparency and accountability are key attributes of governance. Since 2003, Newmont has been reporting on how we manage the sustainability issues of relevance to stakeholders around the globe. Our sustainability report provides an annual review of non-financial performance updates on governance, strategy and management approach, risk management, and performance in key areas that include health, safety and security, workforce, the environment, supply chain, social acceptance, business integrity and compliance, value sharing, equity, inclusion and diversity domains. Our sustainability report is compiled in accordance with the Global Reporting Initiative's ("GRI") Standards Core option, the GRI Mining and Metals Sector Supplement, and the Value Reporting Foundation's SASB Metals & Mining standards, is externally assured, and reflects Newmont’s commitment to transparency and reporting obligations as a founding member of the International Council on Mining and Metals and as an early adopter of the United Nations ("UN") Guiding Principles Reporting Framework.
Newmont’s sustainability reporting suite also includes our climate report, sustainability-linked bond framework, ESG data tables, conflict-free gold report, policy influence disclosures, political spending disclosures, economic impact reports, CDP (formerly, “Carbon Disclosure Project”) responses, and other reports and responses, which can be found on our website at www.newmont.com/sustainability. The information on our website, including, without limitation, in the annual sustainability report and climate report, should not be deemed incorporated by reference into this annual report or otherwise “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section.
Environmental Practices
Climate Change. We accept the Intergovernmental Panel on Climate Change’s ("IPCC") assessment of climate science, and we acknowledge that human activities contribute to climate change and business has an important role in addressing this global challenge. It is our firm belief that climate change is one of the greatest global challenges of our time. For a discussion of climate-related risks, see Part I, Item 1A, Risk Factors.
Climate Targets and Initiatives to Achieve. As the world’s leading gold mining company, we believe that value-creation industries like mining have a responsibility to drive bold actions and innovation to transition us to a low-carbon economy. In an effort to play our part in addressing climate change, in 2020 we announced science-based, greenhouse gas reduction targets of more than 30% for Scope 1 and Scope 2 and 30% for Scope 3 by 2030, with an ultimate goal of achieving net zero carbon emissions by 2050. Our 2030 targets have been approved and validated by the Science-Based Targets Initiative (SBTi), which ensures that our targets support the Paris Agreement’s goal of limiting global warming to well below 2 degrees Celsius compared to pre-industrial levels.
Since announcing our climate change targets in 2020, we have taken steps to reduce our greenhouse gas emissions. In 2020, Newmont announced plans to significantly invest in climate change initiatives in support of our goal. As part of these initiatives, in November 2021, Newmont announced a strategic alliance with Caterpillar Inc. (“CAT”) with the aim to develop and implement a comprehensive all-electric autonomous mining system to achieve zero emissions mining. Newmont plans to provide a preliminary investment of $100 to CAT in connection with initial automation and electrification goals for surface and underground mining infrastructures and haulage fleets at Newmont’s Cripple Creek and Victor mine in Colorado and Tanami mine in Northern Territory, Australia. Other investments supporting our climate change initiatives are expected to include emissions reduction projects and renewable energy opportunities as we seek to achieve these climate targets.
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We also see sustainable finance as a way to further demonstrate the seriousness that Newmont puts on achieving our climate commitments. In December 2021, Newmont became the first in the mining industry to issue a sustainability-linked bond, with the registered public offering of $1 billion aggregate principal amount of 2.600% Sustainability-Linked Senior Notes due 2032 (the "Notes"), with the coupon linked to Newmont’s performance against key ESG commitments regarding 2030 emissions reduction targets and the representation of women in senior leadership roles target. In connection with the issuance of the Notes, Newmont published a Sustainability-Linked Bond Framework and obtained a second party opinion on the framework from Institutional Shareholder Services group of companies ("ISS") ESG. This follows Newmont’s decision earlier in 2021 to amend its revolving credit facility to include an interest rate margin adjustment based on the Company’s ESG external ratings. The Notes and Revolver align Newmont’s business and financing with its commitments and values by creating a direct link between its sustainability performance and funding strategies.
In addition to our focus on reducing carbon emissions, we believe that access to clean, safe water is a human right, and reliable water supplies are vital for hygiene, sanitation, livelihoods and the health of the environment. Because water is also critical to our business, we recognize the need to use water efficiently, protect water resources, and collaborate with the stakeholders within the watersheds where we operate to effectively manage this shared resource. We operate in water-stressed areas with limited supply and increasing population and water demand. Increasing pressure on water use may occur due to increased populations in and around communities in proximity to our operations. We have set annual water efficiency targets through 2023 to reduce fresh water consumption in support of our goal to achieve water stewardship.
Our Environmental Impact. Our operations span four continents in a range of ecosystems that include tropical, desert and arctic climates. We understand the impact our activities can have on the environment and are committed to protect and prevent – or otherwise minimize, mitigate and remediate – those impacts in the areas where we operate.
We conduct our operations so as to protect public health and the environment and believe our operations are in compliance with applicable laws and regulations in all material respects. Our mining and exploration activities are subject to various laws and regulations in multiple jurisdictions governing the protection of the environment. These laws and regulations are continually changing and are generally becoming more restrictive.
Our Environmental Reclamation and Remediation Commitments. Each operating mine has a reclamation plan in place that meets, in all material respects, applicable legal and regulatory requirements. We are also involved in several matters concerning environmental obligations associated with former, primarily historic, mining activities. Generally, these matters concern developing and implementing remediation plans at the various sites. The reclamation and remediation stage is a multifaceted process with complex risks. Successfully closing and reclaiming mines is crucial for gaining stakeholder trust and maintaining social acceptance. Notably, Newmont is committed to the implementation of the Global Industry Standard on Tailings Management (“GISTM”) and all tailing storage facilities are expected to be in conformance with the GISTM by 2025. Compliance with GISTM remains on-going and has and may continue to result in further increases to our estimated closure costs. Additionally, laws, regulations and permit requirements focused on water management and discharge requirements for operations and water treatment in connection with closure are becoming increasingly stringent. Compliance with water management and discharge quality remains dynamic and has and may continue to result in further increases to our estimated closure costs. For a discussion of the most significant reclamation and remediation activities, see Note 6 and Note 26 to the Consolidated Financial Statements. For discussion of regulatory, tailings storage facilities, water, climate and other environmental risks, see Part I, Item 1A. Risk Factors, for additional information.
Social Practices
Newmont’s People. At Newmont, one of the strategic pillars is people, which forms the basis of our business planning and establishes objectives by which we measure our performance. The success of our business comes from the accomplishments and well-being of our employees and contractors. Our goal is to build a workplace culture that fosters leaders and allows every person to thrive, contribute, and grow.
Approximately 14,400 people were employed by Newmont and Newmont subsidiaries and approximately 16,600 people were working as contractors in support of Newmont’s operations at December 31, 2021. Additionally, at December 31, 2021, approximately 41% of our workforce were members of a union or participated in collective bargaining. We are committed to fostering solid relationships with all members of our workforce based on trust, treating workers fairly and providing them with safe and healthy working conditions. For a discussion of related risks, see Part I, Item 1A, Risk Factors.
Inclusion and Diversity. The people who work on our behalf give us a competitive advantage. Through our global human capital strategy, we align our talent management efforts with the overall business strategy. The strategy’s focus areas include enhancing the employee experience and evolving for future workforce needs; building our bench strength and leadership capabilities; developing effective labor relations that align stakeholders with a shared future; and improving inclusion, including reaching gender parity. We believe that progressing an inclusive workplace culture is a critical part of tackling the challenge of attracting and retaining diverse employees.
In 2021, we were also active participants in the Paradigm for Parity framework, a coalition of business leaders committed to a workplace where women and men have equal power, status and opportunity in senior leadership by 2030, and we are committed to advancing the UN Sustainable Development Goal to achieve gender equality. In our annual sustainability report, Newmont voluntarily reports workforce and labor information in accordance with GRI Standards, including data on workforce demographics, compensation
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and equal remuneration, gender diversity, union representation, labor relations, employee turnover, hiring representation, and training and development. Newmont also reports employment data in U.S. Equal Employment Opportunity Commission EEO-1 reports which can be found on our website. The information in our sustainability report and on our website is not incorporated by reference in this annual report.
As discussed above, Newmont issued a sustainability-linked bond, which includes a key performance indicator ("KPI") focused on the percentage of women in senior leadership roles. Newmont commits to increase women in senior leadership roles to 50% by 2030 in line with Paradigm for Parity objectives. Women currently hold 25% of the senior leadership roles.1
ESG Performance-based Compensation. The importance of ESG performance is emphasized with our workforce through our training and development programs and our compensation design. Employees eligible for our short-term incentive plan are held accountable for the Company’s health, safety and sustainability performance through Newmont’s performance-based compensation structure. ESG will comprise 30% of the Company’s Short-term Incentive Plan payout for 2021, with 20% allocated to health & safety metrics and 10% to sustainability performance based upon key public indices. In 2021, Newmont generated strong results in our health and safety and our sustainability measures with all sites and regions having performed above target for their critical control verifications to support fatality risk management, and significant progress on fatigue and wellbeing risk reduction plans, and increased recognition by external rating agencies. Additional information regarding the Company’s compensation programs and performance will be provided in the 2021 Proxy Statement.
Health and Safety. We believe that our operations are in compliance with applicable laws and regulations in all material respects. We continue to sustain robust controls at our operations and offices around the globe, including heightened levels of health screening and testing, in connection with COVID-19, as further discussed below, to protect both our workforce and the local communities in which we operate. In addition, the Company has an established Health & Safety Management System and Health, Safety and Security Standards that in most cases exceed regulatory requirements in the jurisdictions in which we operate. The quality of our Health & Safety Management System is audited regularly as part of our assurance and governance process.
The safety of our people and the communities in which we operate is a core value; with the right to life and right to safe working conditions among our most salient human rights and key priorities. We strongly believe it is possible to effectively manage these risks, ensuring that everyone returns home safely at the end of the day. To drive a fatality, injury and illness free culture, Newmont has centered its health, safety and security activities on four key focus areas: leadership; fatality prevention; occupational health and wellness; and security threat management.
In 2021, we continued to transform our fatality risk management program resulting in over 500,000 in-field critical control verifications being undertaken, and a large proportion via our new mobile application. These verifications were undertaken by various levels of leadership who increased their visible field presence. We continued to focus on Vehicles and Driving fatality risk exposure with the implementation of minimum specifications for vehicles including buses and introduced vehicle monitoring systems (in-vehicle safety system – IVSS). Similarly, the focus on eliminating "live work" has resulted in innovative redesigning of tasks to eliminate our team's exposure to this critical risk, as well as partnering with industry peers to rapidly replicate and pilot new technology. Over 100 solutions to eliminate live work were implemented globally in 2021.
Commitments to Communities. Newmont aims to better understand both the positive and negative impacts that our activities have on host communities, and to engage impacted communities and groups to mitigate or optimize these impacts in a manner that is culturally appropriate and with the consent of those impacted. We strive to build meaningful relationships with stakeholders and recognize the need to understand, minimize and mitigate our impacts and to build long-term, positive partnerships. We also recognize our responsibility to respect and promote human rights. At our sites on or adjacent to Indigenous Peoples’ territories, we respect and acknowledge the individual and collective rights and interests of Indigenous Peoples in line with the International Labour Organization ("ILO") Convention 169 and the UN Declaration on the Rights of Indigenous Peoples.
Governance Practices
Board of Directors Oversight. Newmont believes that strong corporate governance, with management accountability and active oversight from an experienced Board of Directors, is essential for mitigating risk, serving in the best interests of all stakeholders and creating long-term value. The highest level of oversight at Newmont resides with Newmont’s Board of Directors (the “Board”). The Board plays a critical role, overseeing the Company’s business strategy and the overall goal of delivering long-term value creation for shareholders and other stakeholders. The members of Newmont’s Board bring a broad range of backgrounds, experiences and talents, along with ethnic, racial and gender diversity, to our governance process. As of December 31, 2021, the Board was comprised of 13 directors (12 independent non-executive directors and one executive director) with 75 percent of independent directors being either gender, ethnically or racially diverse.
Four core Board committees, Audit, Corporate Governance and Nominating, Leadership Development and Compensation, and Safety and Sustainability, provide oversight and guidance in key areas. Each committee assists the Board in carrying out responsibilities such as assessing major risks, ensuring high standards of ethical business conduct, succession planning and talent management, and
1 Calculated as women in senior leadership roles as a percentage of total senior leadership. Senior leadership represented as Senior Director level or above (or equivalent if grading or title system changes).
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approving and providing oversight of the sustainability strategy, which includes commitments to adoption of best practices in promotion of a healthy and safe work environment, and environmentally sound and socially responsible mining and resource development. All members of these four core Committees are independent, as defined in the listing standards of the New York Stock Exchange and Newmont’s Corporate Governance Guidelines. More information on Newmont’s Board, governance practices and risk oversight can be found in our annual Proxy Statement.
Code of Conduct. Our global Code of Conduct (the “Code”), which was adopted and approved by Newmont’s Board, forms the foundation for our integrity expectations, and six overarching policies, along with our standards on Anti-Corruption, Conflicts of Interest, Gifts and Entertainment and U.S. Export Compliance, state the minimum requirements for conducting business honestly, ethically and in the best interests of Newmont. Our Code reflects our belief that as important as what we do is how we do it. It requires all representatives of Newmont to demonstrate our values – safety, integrity, sustainability, inclusion and responsibility – in every aspect of our professional lives and ultimately, to live up to our purpose, which is to create value and improve lives through sustainable and responsible mining.
Governance Materials. Our Corporate Governance Guidelines, Proxy Statement, policies, and the charters for the Committees of Board of Directors are available on our website, www.newmont.com, and are available free of charge upon request to Investor Relations at our principal executive office. We also file with the New York Stock Exchange an annual certification that our Chief Executive Officer is unaware of any violation of the NYSE’s corporate governance standards. We make available free of charge through our website this annual report on Form 10 K, quarterly reports on Form 10 Q, current reports on Form 8 K and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Exchange Act, as soon as reasonably practicable after such material is electronically filed with or furnished to the SEC. The information on our website is not incorporated by reference in this report.
COVID-19 Pandemic
The outbreak of coronavirus ("COVID-19") was declared a pandemic by the World Health Organization in 2020. As a global business, we are committed to doing our part to combat the COVID-19 pandemic and protect people and their livelihoods. Newmont engaged its Rapid Response process early in connection with the on-going COVID-19 pandemic and continues to proactively take conservative steps to prevent further transmission. These steps have included, but are not limited to the following:
Enforcing social distancing protocols;
Providing flexible and remote working plans for employees;
Increasing frequency of deep cleaning and sanitization of surfaces;
Increasing inventory of hand sanitizer, soap and hygiene supplies;
Providing logistical and healthcare support to nearby communities where needed;
Enhancing screenings at entry to sites and pre-travel and on-entry screening tests for sites in high risk locations;
Restricting workplace access for confirmed and suspected COVID cases as well as close contacts with a confirmed case of COVID-19; and,
Requirement for full vaccination to enter any Newmont workplace, where legally permissible.
Accordingly, vaccination rates for the workforce are high, with Yanacocha, Boddington, Tanami, Éléonore and Musselwhite sites at almost 100%, our Corporate office and Cerro Negro sites above 90% and Akyem, Ahafo, Porcupine and CC&V sites above 70% fully vaccinated. This will continue to improve as vaccination accessibility increases and mandates apply.
Additionally, in April 2020, we established the Newmont Global Community Support Fund, a $20 fund to help host communities, governments and employees combat the COVID-19 pandemic, of which approximately $14 has been distributed through December 31, 2021. The fund is designed to focus on employee and community health, food security and local economic resilience through partnerships with local governments, medical institutions, charities and non-governmental organizations to address the greatest needs with long-term resiliency and future community development in mind.
The COVID-19 pandemic is expected to continue to evolve and challenge us in 2022. As such our practices and protocols will also continue to evolve with Newmont’s commitment to protect the health and safety of our workforce and host communities as our underlying principle. For a discussion of COVID-19 related risks to the business, see Part I, Item 1A, Risk Factors.

Refer also to “Consolidated Financial Results,” “Results of Consolidated Operations” and “Liquidity and Capital Resources” within Part II, Item 7, Management’s Discussion and Analysis for additional information about the impact of COVID-19 on our business and operations.
Risk Factor Summary
We are subject to a variety of risks and uncertainties, including risks related to our operations and business, financial risks, risks related to our industry, environmental and climate risks, risks related to the jurisdictions in which we operate, risks related to our
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workforce, legal risks and risks related to our common stock, which could have a material adverse effect on our business, financial condition, results of operations and cash flows. Risks that we deem material are described under “Risk Factors” in Item 1A of this report. These risks include, but are not limited to, the following:
Our operations and business have been affected by the COVID-19 pandemic, and may be materially and adversely impacted in the future.
A substantial or extended decline in gold, silver, copper, zinc or lead prices would have a material adverse effect on us.
We may be unable to replace gold, silver, copper, zinc or lead reserves as they become depleted.
Estimates of proven and probable reserves and measured, indicated and inferred resources are uncertain and actual recoveries may vary from our estimates.
Estimates relating to projects and mine plans of existing operations are uncertain and we may incur higher costs and lower economic returns than estimated.
Increased operating and capital costs could affect our profitability.
Mine closure, reclamation and remediation costs for environmental liabilities may exceed the provisions we have made.
Challenges in maintaining positive community relations and reputation can pose additional obstacles to our ability to develop our projects.
We are dependent upon information technology and operational technology systems, which are subject to disruption, damage, failure and risks associated with implementation, upgrade, operation and integration.
Our interests in joint ventures remains subject to risk.
Increased exposure to foreign exchange fluctuations and capital controls may adversely affect Newmont’s costs, earnings and the value of some of our assets.
Future funding requirements may affect our business, our ability to pay cash dividends or our ability to engage in share repurchase transactions.
Any downgrade in the credit ratings assigned to our debt securities could increase our future borrowing costs and adversely affect the availability of new financing.
Our results could be significantly impacted by impairments.
Our ability to recognize the benefits of deferred tax assets is dependent on future cash flows and taxable income.
Civil disturbances, criminal activities, illegal mining and artisanal mining can disrupt business and expose the Company to liability.
Competition from other natural resource companies may harm our business.
We may experience increased costs or losses resulting from the hazards and uncertainties associated with mining.
We may be unable to obtain or retain necessary permits, which could adversely affect our operations.
Mining companies are increasingly required to consider and provide benefits to the communities and countries in which they operate.
Our operations are subject to extensive health and safety and environmental laws and regulations.
Our operations are subject to transitional and physical risks related to climate change.
Our operations are subject to geotechnical challenges.
Our operations may be adversely affected by rising energy prices or energy shortages.
Our operations are dependent on the availability of sufficient water supplies to support our mining operations.
Our operations are subject to risks of doing business in multiple jurisdictions, including political, economic and other risks.
Our business depends on good relations with our employees, and if we are unable to attract and retain additional highly skilled employees, our business and future operations may be adversely affected
We rely on contractors to conduct a significant portion of our operations and construction projects.
New legislation and tax risks in various operating jurisdictions could negatively affect us.
Our business is subject to changing regulations and laws, including, without limitation, extraterritorial and domestic anti-bribery laws and regulations, a breach or violation of which could lead to substantial sanctions and civil and criminal
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prosecution, as well as fines and penalties, litigation, loss of licenses or permits and other collateral consequences and reputational harm.
Title to some of our properties may be insufficient, defective, or subject to legal challenge in the future.
The price of our common stock may be volatile, and holders of our common stock may not receive dividends in the future.
Additional risks and uncertainties not presently known to us or that we currently deem immaterial also may impair our business, financial condition, results of operations and cash flows.
Forward-Looking Statements
Certain statements contained in this report (including information incorporated by reference herein) are “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”), and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and are intended to be covered by the safe harbor provided for under these sections. Words such as “expect(s),” “feel(s),” “believe(s),” “will,” “may,” “anticipate(s),” “estimate(s),” “should,” “intend(s),” "target(s)" and similar expressions are intended to identify forward-looking statements. Our forward-looking statements may include, without limitation:
estimates regarding future earnings and the sensitivity of earnings to gold, copper, silver, lead, zinc and other metal prices;
estimates of future mineral production and sales;
estimates of future production costs, other expenses and taxes for specific operations and on a consolidated basis;
estimates of future cash flows and the sensitivity of cash flows to gold, copper, silver, lead, zinc and other metal prices;
estimates of future capital expenditures, construction, production or closure activities and other cash needs, for specific operations and on a consolidated basis, and expectations as to the funding or timing thereof;
estimates as to the projected development of certain ore deposits, including the timing of such development, the costs of such development and other capital costs, financing plans for these deposits and expected production commencement dates;
estimates of reserves and resources statements regarding future exploration results and reserve and resource replacement and the sensitivity of reserves to metal price changes;
statements regarding the availability of, and terms and costs related to, future borrowing or financing and expectations regarding future share repurchase transactions, debt repayments or debt tender transactions;
statements regarding future dividends and returns to shareholders;
estimates regarding future exploration expenditures and discoveries;
statements regarding fluctuations in financial and currency markets;
estimates regarding potential cost savings, productivity, operating performance and ownership and cost structures;
expectations regarding statements regarding future transactions, including, without limitation, statements related to future acquisitions and projected benefits, synergies and costs associated with acquisitions and related matters;
expectations of future equity and enterprise value;
expectations regarding the start-up time, design, mine life, production and costs applicable to sales and exploration potential of our projects;
statements regarding future hedge and derivative positions or modifications thereto;
statements regarding local, community, political, economic or governmental conditions and environments;
statements and expectations regarding the impacts of COVID-19 and variants thereof and other health and safety conditions;
statements regarding the impacts of changes in the legal and regulatory environment in which we operate, including, without limitation, relating to regional, national, domestic and foreign laws;
statements regarding climate strategy and expectations regarding greenhouse gas emission targets and related operating costs and capital expenditures;
statements regarding expected changes in the tax regimes in which we operate, including, without limitation, estimates of future tax rates and estimates of the impacts to income tax expense, valuation of deferred tax assets and liabilities, and other financial impacts;
estimates of income taxes and expectations relating to tax contingencies or tax audits;
estimates of future costs, accruals for reclamation costs and other liabilities for certain environmental matters, including without limitation, in connection with water treatment and tailings management;
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statements relating to potential impairments, revisions or write-offs, including without limitation, the result of fluctuation in metal prices, unexpected production or capital costs, or unrealized reserve potential;
estimates of pension and other post-retirement costs;
statements regarding estimates of timing of adoption of recent accounting pronouncements and expectations regarding future impacts to the financial statements resulting from accounting pronouncements;
estimates of future cost reductions, synergies, savings and efficiencies in connection with full potential programs and initiatives; and
expectations regarding future exploration and the development, growth and potential of operations, projects and investments.
Where we express an expectation or belief as to future events or results, such expectation or belief is expressed in good faith and believed to have a reasonable basis. However, our forward-looking statements are subject to risks, uncertainties and other factors, which could cause actual results to differ materially from future results expressed, projected or implied by those forward-looking statements. Such risks include, but are not limited to:
the price of gold, copper, silver, lead, zinc and other metal prices and commodities;
the cost of operations;
currency fluctuations;
geological and metallurgical assumptions;
operating performance of equipment, processes and facilities;
labor relations;
timing of receipt of necessary governmental permits or approvals;
domestic and foreign laws or regulations, particularly relating to the environment, mining and processing;
changes in tax laws;
domestic and international economic and political conditions;
our ability to obtain or maintain necessary financing; and
other risks and hazards associated with mining operations.
More detailed information regarding these factors is included in Item 1A, Risk Factors and elsewhere throughout this report. Many of these factors are beyond our ability to control or predict. Given these uncertainties, readers are cautioned not to place undue reliance on our forward-looking statements.
All subsequent written and oral forward-looking statements attributable to Newmont or to persons acting on its behalf are expressly qualified in their entirety by these cautionary statements. We disclaim any intention or obligation to update publicly any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required under applicable securities laws.
Available Information
Newmont maintains a website at www.newmont.com and makes available, through the Investor Relations section of the website, its Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, Section 16 filings and all amendments to those reports, as soon as reasonably practicable after such material is electronically filed with the United States Securities and Exchange Commission (“SEC”). Certain other information, including Newmont’s Corporate Governance Guidelines, the charters of key committees of its Board of Directors and its Code of Conduct are also available on the website.
ITEM 1A.       RISK FACTORS (dollars in millions, except per share, per ounce and per pound amounts)
Our business activities are subject to significant risks, including those described below. You should carefully consider these risks. If any of the described risks actually occurs, our business, financial position and results of operations could be materially adversely affected. Such risks are not the only ones we face and additional risks and uncertainties not presently known to us or that we currently deem immaterial may also affect our business. This report contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from those anticipated in the forward-looking statements as a result of a number of factors, including the risks described below. See “Forward-Looking Statements.”
Risks Related to Our Operations and Business
Our operations and business have been affected by the COVID-19 pandemic, and may be materially and adversely impacted in the future.
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The Company faces risks related to health epidemics and other outbreaks of communicable diseases, which could significantly disrupt operations and may materially and adversely affect its business and financial conditions. The global COVID-19 pandemic has had major impacts on the world, our industry and our Company. Despite the strong protocols we have in place, COVID-19, the delta and omicron variants and other new variants which may emerge present ongoing risks and challenges, and is expected to continue to impact our people, operations and surrounding Communities. Efforts to control the spread of COVID-19 impacted the operation of Newmont’s mines and the development of projects and exploration activities and may continue to do so in the future. The governments in many of the jurisdictions in which we operate implemented restrictive measures such as travel bans, quarantine and self-isolation at various times during the pandemic and may do so again in the future. The scope and duration of any such restrictions remains outside of the Company’s control. The Company carefully considers government restrictions and the needs of its employees and host communities. Additionally, based upon evolving contagion rates or occurrences at our operating sites, senior management or the Board may be required to or decide to reduce or limit operational activities to essential care and maintenance procedures including the management of critical environmental systems. For example, in order to protect nearby communities and align with government travel restrictions or health considerations certain of Newmont’s operations were temporarily put into care and maintenance resulting in a temporary decrease in production at these sites in 2020 and 2021. Additionally, the majority of our sites experienced pandemic-related absenteeism in 2021. With the surge of the omicron variant in January 2022, the Company is continuing to experience reduced staffing and absenteeism at several sites. Reductions in our operational activities due to COVID-19 could result in additional sites being placed into care and maintenance for extended periods of time and/or have a material adverse impact on our business, or financial condition, results of operations and cash flows. If the majority of our sites are placed into care and maintenance, this could significantly reduce our cash flow and impact our ability to meet certain covenants related to our revolving credit facility and borrowing capacity.
The Company incurred, and will continue to incur costs as a result of actions taken to protect against the impacts of the COVID-19 pandemic and to comply with local mandates, including but not limited to contributions to the Newmont Global Community Support Fund, additional health screenings, incremental travel, security and employee-related costs. Other impacts of changing government restrictions and the evolving health environment could include prolonged travel restraints, more stringent shipment restraints, delays in product refining and smelting due to restrictions or temporary closures, other supply chain disruptions and workforce interruptions, including loss of life, and reputational damage in connection with challenges or reactions to action or perceived inaction by the Company related to the COVID-19 pandemic, which could have a material adverse effect on the Company’s cash flows, earnings, results of operations and financial position.
A substantial or extended decline in gold, silver, copper, zinc or lead prices would have a material adverse effect on us.
Our business is dependent on the prices of gold, silver, copper, zinc and lead, which fluctuate on a daily basis and are affected by numerous factors beyond our control. Factors tending to influence prices include:
Gold sales, purchases or leasing by governments and central banks;
Speculative short positions taken by significant investors or traders in gold, copper, silver, lead, zinc or other metals;
The relative strength of the U.S. dollar;
The monetary policies employed by the world’s major Central Banks;
The fiscal policies employed by the world’s major industrialized economies;
Expectations of the future rate of inflation;
Interest rates;
Recession or reduced economic activity in the United States, China, India and other industrialized or developing countries;
Decreased industrial, jewelry, base metal or investment demand;
Increased import and export taxes;
Increased supply from production, disinvestment and scrap;
Forward sales by producers in hedging or similar transactions;
Availability of cheaper substitute materials; and
Changing investor or consumer sentiment, including in connection with transition to a low-carbon economy, investor interest in crypto currencies and other investment alternatives and other factors.
Average gold prices for 2021 were $1,799 per ounce (2020: $1,770; 2019: $1,393), average copper prices for 2021 were $4.23 per pound (2020: $2.80; 2019: $2.72), average silver prices for 2021 were $25.12 per ounce (2020: $20.55; 2019: $16.21), average lead prices for 2021 were $1.00 per pound (2020: $0.83; 2019: $0.91) and average zinc prices for 2021 were $1.36 per pound (2020: $1.03; 2019: $1.16). Any decline in our realized prices adversely impacts our revenues, net income and operating cash flows, particularly in light of our strategy of not engaging in hedging transactions with respect to sales of gold, silver, copper, lead or zinc. We have recorded asset impairments in the past and may experience additional impairments as a result of lower gold, silver, copper, zinc or lead prices in the future.
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In addition, sustained lower gold, silver, copper, zinc or lead prices can:
Reduce revenues further through production declines due to cessation of the mining of deposits, or portions of deposits, that have become uneconomic at sustained lower metal prices;
Reduce or eliminate the profit that we currently expect from ore stockpiles and ore on leach pads and increase the likelihood and amount that the Company might be required to record write downs related to the carrying value of its stockpiles and ore on leach pads;
Halt or delay the development of new projects;
Reduce funds available for exploration and advanced projects with the result that depleted reserves may not be replaced; and
Reduce existing reserves by removing ores from reserves that can no longer be economically processed at prevailing prices
We may be unable to replace gold, silver, copper, zinc or lead reserves as they become depleted.
Mining companies must continually replace reserves depleted by production to maintain production levels over the long term and provide a return on invested capital. Depleted reserves can be replaced in several ways, including expanding known ore bodies, by locating new deposits or acquiring interests in reserves from third parties. Exploration is highly speculative in nature, involves many risks and uncertainties and is frequently unsuccessful in discovering significant mineralization. Accordingly, our current or future exploration programs may not result in new mineral producing operations. Even if significant mineralization is discovered, it will likely take many years from the initial phases of exploration until commencement of production, during which time the economic feasibility of production may change.
We may consider, from time to time, the acquisition of ore reserves from others related to development properties and operating mines. Such acquisitions are typically based on an analysis of a variety of factors including historical operating results, estimates of and assumptions regarding the extent of ore reserves, the timing of production from such reserves and cash and other operating costs. Other factors that affect our decision to make any such acquisitions may also include our assumptions for future gold, silver, copper, zinc or lead prices or other mineral prices and the projected economic returns and evaluations of existing or potential liabilities associated with the property and its operations and projections of how these may change in the future. In addition, in connection with any acquisitions we may rely on data and reports prepared by third parties (including ability to permit and compliance with existing regulations) and which may contain information or data that we are unable to independently verify or confirm. Other than historical operating results, all of these factors are uncertain and may have an impact on our revenue, our cash flow and other operating issues, as well as contributing to the uncertainties related to the process used to estimate reserves and resources. In addition, there may be intense competition for the acquisition of attractive mining properties.
As a result of these uncertainties, our exploration programs and any acquisitions which we may pursue may not result in the expansion or replacement of our current production with new ore reserves or operations, which could have a material adverse effect on our business, prospects, results of operations and financial position.
Estimates of proven and probable reserves and measured, indicated and inferred resources are uncertain and the volume and grade of ore actually recovered may vary from our estimates.
The reserves stated in this report represent the amount of gold, copper, silver, lead and zinc that we estimated, at December 31, 2021, could be economically and legally extracted or produced at the time of the reserve determination. Estimates of proven and probable reserves are subject to considerable uncertainty. Such estimates are, or will be, to a large extent, based on the prices of gold, silver, copper, zinc and lead and interpretations of geologic data obtained from drill holes and other exploration techniques, which data may not necessarily be indicative of future results. If our reserve estimations are required to be revised due to significantly lower gold, silver, zinc, copper and lead prices, increases in operating costs, reductions in metallurgical recovery or other modifying factors, this could result in material write-downs of our investment in mining properties, goodwill and increased amortization, reclamation and closure charges.
Producers use feasibility studies for undeveloped ore bodies to derive estimates of capital and operating costs based upon anticipated tonnage and grades of ore to be mined and processed, the predicted configuration of the ore body, expected recovery rates of metals from the ore, the costs of comparable facilities, the costs of operating and processing equipment and other factors. Actual operating and capital cost and economic returns on projects may differ significantly from original estimates. Further, it may take many years from the initial phases of exploration until commencement of production, during which time, the economic feasibility of production may change.
Additionally, resource does not indicate proven and probable reserves as defined by the SEC or the Company’s standards. Estimates of measured, indicated and inferred resources are subject to further exploration and development, and are, therefore, subject to considerable uncertainty. Inferred resources, in particular, have a great amount of uncertainty as to their existence and their economic and legal feasibility. The Company cannot be certain that any part or parts of the resource will ever be converted into reserves.
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In addition, if the price of gold, silver, copper, zinc or lead declines from recent levels, if production costs increase, grades decline, recovery rates decrease or if applicable laws and regulations are adversely changed, the indicated level of recovery may not be realized or mineral reserves or resources might not be mined or processed profitably. If we determine that certain of our mineral reserves have become uneconomic, this may ultimately lead to a reduction in our aggregate reported reserves and resources. Consequently, if our actual mineral reserves and resources are less than current estimates, our business, prospects, results of operations and financial position may be materially impaired.
Estimates relating to projects and mine plans of existing operations are uncertain and we may incur higher costs and lower economic returns than estimated.
Mine development and expansion projects typically require a number of years and significant expenditures during the development phase before production is possible. Such projects could experience unexpected problems and delays during development, construction and mine start-up. Our decision to develop a project is typically based on the results of studies, which estimate the anticipated economic returns of a project. The actual project profitability or economic feasibility may differ from such estimates as a result of any of the following factors, among others:
Changes in tonnage, grades and metallurgical characteristics of ore to be mined and processed;
Changes in input commodity and labor costs;
The quality of the data on which engineering assumptions were made;
Adverse geotechnical conditions;
Availability of adequate and skilled labor force;
Availability, supply and cost of water and power;
Fluctuations in inflation and currency exchange rates;
Availability and terms of financing;
Delays in obtaining environmental or other government permits or approvals or changes in the laws and regulations related to our operations or project development;
Changes in tax laws, the laws and/or regulations around royalties and other taxes due to the regional and national governments and royalty agreements;
Weather or severe climate impacts, including, without limitation, prolonged or unexpected precipitation, drought and/or sub-zero temperatures;
Potential delays and restrictions in connection with health and safety issues, including pandemics (such as COVID-19) and other infectious diseases;
Potential delays relating to social and community issues, including, without limitation, issues resulting in protests, road blockages or work stoppages; and
Potential challenges to mining activities or to permits or other approvals or delays in development and construction of projects based on claims of disturbance of cultural resources or the inability to secure consent for such disturbance.
New projects require, among other things, the successful completion of feasibility studies, attention to various fiscal, tax and royalty matters, obtainment of, and compliance with, required governmental permits and arrangements for necessary surface and other land rights. We may also have to identify adequate sources of water and power for new projects, ensure that appropriate community infrastructure (for example, reliable rail, ports, roads, and bridges) is developed to support the project and secure appropriate financing to fund a new project. These infrastructures and services are often provided by third parties whose operational activities are outside of our control. Establishing infrastructure for our development projects requires significant resources, identification of adequate sources of raw materials and supplies, and the cooperation of national and regional governments, none of which can be assured. In addition, new projects have no operating history upon which to base estimates of future financial and operating performance, including future cash flow. Thus, it is possible that actual costs may increase significantly and economic returns may differ materially from our estimates. Consequently, our future development activities may not result in the expansion or replacement of current production with new production, or one or more of these new production sites or facilities may be less profitable than currently anticipated or may not be profitable at all, any of which could have a material adverse effect on our results of operations and financial position.
For our existing operations, we base our mine plans on geological and metallurgical assumptions, financial projections and commodity price estimates. These estimates are periodically updated to reflect changes in our operations, including modifications to our proven and probable reserves and resources, revisions to environmental obligations, changes in legislation and/or our political or economic environment, and other significant events associated with mining operations. Further, future positive revisions, if any, remain subject to improvements in costs, recovery, commodity price or a combination of these and other factors. Additionally, we review our operations for events and circumstances that could indicate that the carrying value of our long-lived assets may not be recoverable. If indicators of impairment are determined to exist at our mine operations, and an impairment charge is incurred, such charges are not
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reversible at a later date even when favorable modifications to our proven and probable reserves and measured, indicated and inferred resources, favorable revisions to environmental obligations, favorable changes in legislation and/or our political or economic environment, and other favorable events occur. As a result of these uncertainties, actual results may be less favorable than estimated returns and initial financial outlook.
Increased operating and capital costs could affect our profitability.
Costs at any particular mining location are subject to variation due to a number of factors, such as variable ore grade, changing metallurgy and revisions to mine plans in response to the physical shape and location of the ore body, as well as the age and utilization rates for the mining and processing related facilities and equipment. In addition, costs are affected by the price and availability of input commodities, such as fuel, electricity, labor, chemical reagents, explosives, steel, concrete and mining and processing related equipment and facilities. Commodity costs are, at times, subject to volatile price movements, including increases that could make production at certain operations less profitable. Further, changes in laws and regulations can affect commodity prices, uses and transport. Reported costs may also be affected by changes in accounting standards. A material increase in costs at any significant location could have a significant effect on our profitability and operating cash flow.
Our operational costs, including, without limitation, labor costs, can be impacted by inflation. Certain of our operations are located in countries that have in the past experienced high rates of inflation, such as in Argentina and Suriname. It is possible that in the future, high inflation in the countries in which we operate may result in an increase in operational costs in local currencies (without a concurrent devaluation of the local currency of operations against the dollar or an increase in the dollar price of gold, silver, copper, zinc or lead). A material increase in costs at any significant location could have a significant effect on our profitability and operating cash flow.
We could have significant increases in capital and operating costs over the next several years in connection with new projects, costs related to closure reclamation activities, and in the sustaining and/or expansion of existing mining and processing operations. Costs associated with capital expenditures may increase in the future as a result of factors beyond our control. Increased capital expenditures may have an adverse effect on the profitability of and cash flow generated from existing operations, as well as the economic returns anticipated from new projects. Significantly higher and sustained increases in operational costs or capital expenditures could result in the deferral or closure of projects and mines in the event that costs become prohibitive.
Mine closure, reclamation and remediation costs for environmental liabilities may exceed the provisions we have made.
Natural resource extractive companies are required to close their operations and rehabilitate the lands that they mine in accordance with a variety of environmental laws and regulations. Estimates of the total ultimate closure and rehabilitation costs for gold, silver, copper, zinc and lead mining operations are significant and based principally on current legal and regulatory requirements and mine closure plans that may change materially.
Additionally, we may be held responsible for the costs of addressing contamination at the site of current or former activities or at third party sites or be held liable to third parties for exposure to hazardous substances should those be identified in the future. Under the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 (“CERCLA”) and its state law equivalents, current or former owners of properties may be held jointly and severally liable for the costs of site cleanup or required to undertake remedial actions in response to unpermitted releases of hazardous substances at such property, in addition to, among other potential consequences, liability to governmental entities for the cost of damages to natural resources, which may be significant. These subject properties are referred to as “superfund” sites. For example, the inactive Midnite uranium mine is a superfund site subject to CERCLA. It is possible that certain of our other current or former operations in the U.S. could be designated as a superfund site in the future, exposing us to potential liability under CERCLA.
The laws and regulations governing mine closure and reclamation in a particular jurisdiction are subject to review at any time and may be amended to impose additional requirements and conditions which may cause our provisions for environmental liabilities to be underestimated and could materially affect our financial position or results of operations. For a more detailed description of potential environmental liabilities, see the discussion in Environmental Matters in Note 26 to the Consolidated Financial Statements. In addition, regulators are increasingly requesting security in the form of cash collateral, credit, trust arrangements or guarantees to secure the performance of environmental obligations, which could have an adverse effect on our financial position. Any underestimated or unanticipated retirement and rehabilitation costs could materially affect our financial position, results of operations and cash flows. Environmental liabilities are accrued when they become known, are probable and can be reasonably estimated. Whenever a previously unrecognized remediation liability becomes known, or a previously estimated reclamation cost is increased, the amount of that liability and additional cost will be recorded at that time and could materially reduce our consolidated net income attributable to Newmont stockholders and potentially result in impairments.
For example, in early 2015 and again in June 2017, the Peruvian government agency responsible for certain environmental regulations, the Ministry of the Environment (“MINAM”), issued proposed modifications to water quality criteria for designated beneficial uses which apply to mining companies, including Yanacocha. These criteria modified the in-stream water quality criteria pursuant to which Yanacocha has been designing water treatment processes and infrastructure. In 2017, Yanacocha submitted a modification to its previously approved compliance achievement plan to the Mining Ministry (“MINEM”). The Company did not receive a response or comments to this submission until 2021 and is in the process of updating its compliance achievement plan to address these comments.
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During this interim period, Yanacocha separately submitted an Environmental Impact Assessment modification considering the ongoing operations and the projects to be developed and obtained authorization from MINEM for such projects. This authorization included a deadline for compliance with the modified water quality criteria by January 2024. Consequently, part of the Company response to MINEM will include a request for an extension of time for coming into full compliance with the new regulations. In the event that MINEM does not grant Yanacocha an extension of the previously authorized timeline for, and agree to, the updated compliance achievement plan, fines and penalties relating to non-compliance may result beyond January 2024.
The Company is conducting detailed studies to better estimate water management and other closure activities that will ensure water quality and quantity discharge requirements, including the modifications promulgated by MINAM, as referenced above, will be met. This also includes performing a comprehensive update to the Yanacocha reclamation plan to address changes in closure activities and estimated closure costs while preserving optionality for potential future projects at Yanacocha. These ongoing studies, which will extend beyond the current year, were progressed in the fourth quarter of 2021 as the study team continued to evaluate and revise assumptions and estimated costs of changes to the reclamation plan. While certain estimated costs remain subject to revision, in conjunction with the Company’s annual 2021 update process for all asset retirement obligations, the Company recorded an increase of $1,597 to the Yanacocha reclamation liability based on the progress of the closure studies with a corresponding non-cash charge of $1,554 recorded to reclamation expense related to portions of site operations no longer in production with no expected substantive future economic value and $43 recorded as an increase to the asset retirement cost for producing areas of the operation. The annual 2021 update included an initial consideration of known risks (including the associated risk that water treatment estimates could change in the future as more work is completed). However, these and other risks and contingencies that are the subject of ongoing studies could result in future material increases to the reclamation obligation at Yanacocha, including, but not limited to, a comprehensive review of our tailings storage facility management, review of Yanacocha’s water balance and storm water management system and review of post-closure management costs. The ongoing Yanacocha closure studies are expected to be progressed in 2022 and continue in the future. Future material increases or decreases to the asset retirement obligation could occur as additional analyses are completed and further refinements to water quality and volume modeling are completed. Additionally, revisions to the Yanacocha reclamation plan may change in connection with the Company’s ultimate submission and review of the plan with Peruvian regulators. Refer to Notes 6 and 26 of our Consolidated Financial Statements for information regarding reclamation and remediation, and Note 1 of our Consolidated Financial Statements regarding the Company’s interest in Yanacocha.
Damage to our reputation may result in decreased investor confidence, challenges in maintaining positive community relations and can pose additional obstacles to our ability to develop our projects, which may result in a material adverse impact on our business, financial position, results of operations and growth prospects.
Damage to our reputation can be the result of the actual or perceived occurrence of a variety of events and circumstances, and could result in negative publicity (for example, with respect to handling of environmental, safety and security matters, dealings with local community organizations or individuals, community commitments, handling of cultural sites or resources, and various other matters).
We have also provided greater transparency on environmental, social and governance performance in response to stakeholder engagement and requests in recent years, and provide supplemental disclosures in our Annual Sustainability Report and other sustainability reports on our website in connection with stakeholder concerns and issues. Such increased transparency may result in greater scrutiny and impact how the Company is perceived.
Our Code of Conduct (the “Code”) forms the foundation of our internal governance structure as well as our commitment to responsible mining. We encourage employees and others to promptly report incidents of possible violations of the Code and/or our global policies and standards, including in the areas of business integrity, social and environmental, community relations and human rights. Employees and non-employees, including suppliers and community members, can anonymously report concerns via our third-party helpline. Each mine site has a complaints and grievances register to record matters raised by local stakeholders. When necessary, we use independent mechanisms agreed to by the complainants, such as a local leader or committee, to facilitate resolution of such matters before they require public or legal intervention. However, we are not always able to resolve these matters before they are raised publicly or in legal or regulatory proceedings and in the future we may not be able to meet the growing demands of stakeholders through these mechanisms. Such matters once publicized may negatively impact our reputation and may have a material adverse effect on our business, financial position and results of operations.
The growing use of social media to generate, publish and discuss community news and issues and to connect with others has made it significantly easier, among other things, for individuals and groups to share their opinions of us and our activities, whether true or not. We do not have direct control over how we are perceived by others and any resulting loss of reputation could have a material adverse effect on our business, financial position and results of operations.
We are dependent upon information technology and operational technology systems, which are subject to disruption, damage, failure and risks associated with implementation, upgrade, operation and integration.
We are dependent upon information technology and operational technology systems. The operating and control systems at our mines increasingly leverage technology-based solutions based on a combination of on-premises and cloud-based platforms. These systems are crucial for operating our mines safely and efficiently. Our systems, and those of our third-party service providers and vendors, may be targeted by increasingly sophisticated threat actors. These threats include continually evolving cybersecurity risks from
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a variety of sources, including, without limitation, malware, computer viruses, cyber threats, extortion, employee error, malfeasance, security breaches, cyber-attacks, natural disasters and defects in design. Cybersecurity risk is increasingly difficult to identify and quantify and cannot be fully mitigated because of the rapidly evolving nature of the threats, and the increasing sophistication of the threat actors. Additionally, unauthorized parties may attempt to gain access to these systems for company information through fraud or other means of deceiving our third-party service providers, employees or vendors. We have experienced attempts by external parties to compromise our networks and systems. For example, in 2020, we detected a cyberattack on our systems. Although we were able to respond quickly to stop the continued spread of the threat, it took significant time and resources to fully identify the scope of the attack and to recover our systems and data. The cost of responding to and remediating such event was immaterial. Although the 2020 attempts and other cyber incidents to date have not resulted in any material breaches, disruptions, or loss of business-critical information, our systems and procedures for preparing and protecting against such attempts and mitigating such risks may prove to be insufficient against future attacks. Any future material compromise or breach of our IT systems could have an adverse impact on our business and operations, including damage to our reputation and competitiveness, remediation costs, litigation or regulatory actions. Given the unpredictability of the timing, nature and scope of information technology disruptions, we could potentially be subject to production downtimes, operational delays, the compromising of confidential or otherwise protected information, destruction or corruption of data, security breaches, other manipulation or improper use of our systems and networks or financial losses from remedial actions. Outages in our operational technology may affect operations related to health and safety and could result in putting lives at risk of harm or death. In addition, as technologies evolve and these cybersecurity attacks become more sophisticated, we may incur significant costs to upgrade or enhance our security measures to protect against such attacks and we may face difficulties in fully anticipating or implementing adequate preventive measures or mitigating potential harm. Such efforts may prove insufficient to deter future cybersecurity attacks or prevent all security breaches. While we maintain general insurance, we no longer maintain specific insurance policies covering cybersecurity risk due to increased premium costs and restrictions to coverage, and, as such, any events for which we are not insured may results in additional costs and could affect our results of operations and financial position.
We could also be adversely affected by system or network disruptions if new or upgraded information technology systems are defective, not installed properly or not properly integrated into our operations. System modification failures could have a material adverse effect on our business, financial position and results of operations and could, if not successfully implemented, adversely impact the effectiveness of our internal controls over financial reporting.
To the extent we hold or acquire interests in any joint ventures or enter into any joint ventures, our interest in these properties is subject to the risks normally associated with the conduct of joint ventures.
To the extent we hold or acquire interests in any joint ventures or enter into any joint ventures in the future, the existence or occurrence of one or more of the following circumstances and events could have a material adverse impact on our profitability or the viability of our interests held through joint ventures, which could have a material adverse impact on our future cash flows, earnings, results of operations and financial condition:
inconsistent economic, political or business interests or goals between partners or disagreements with partners on strategy for the most efficient development or operation of mines;
inability to control certain strategic decisions made in respect of properties;
exercise of majority rights by our partners so as to take actions for which we may not believe to be in the joint venture’s best interests, including but not limited to decisions related to labor relations, litigation, government relations, political contributions, community relations, project approval and project funding mechanisms;
inability of partners to meet their financial and other obligations to the joint venture or third parties; and
litigation between partners regarding management, funding or other decisions related to the joint venture.
To the extent that we are not the operator of a joint venture properties, such that we will be unable to control the activities of the operator, the success of such operations will be beyond our control. In many cases we will be bound by the decisions made by the operator in the operation of such property, and will rely on the operator to manage the property and to provide accurate information related to such property. We can provide no assurance that all decisions of operators of properties we do not control will achieve the expected results.
For example, our joint ventures, including the joint venture that combines our and Barrick Gold Corporation’s (“Barrick”) respective Nevada operations, forming NGM, pursuant to the operating agreement entered into on July 1, 2019 between Barrick, Newmont and their wholly-owned subsidiaries party thereto (the “Nevada JV Agreement”), may not be as beneficial to us as expected, whether due to the above-described risks, unfavorable global economic conditions, increases in construction costs, integration challenges, political risks, labor disputes or other factors. Pursuant to the terms of the Nevada JV Agreement, we hold a 38.5 percent economic interest and Barrick holds a 61.5 percent economic interest in NGM. Barrick operates NGM with overall management responsibility and is subject to the supervision and direction of NGM’s Board of Managers, which is comprised of three managers appointed by Barrick and two managers appointed by Newmont. Outside of certain prescribed matters, decisions of the Board of Managers will be determined by majority vote, with the managers appointed by each company having voting power in proportion to such company’s economic interests in NGM. Because we beneficially own less than a majority of the ownership and governance interests in NGM, we have limited control of NGM’s operations and we depend on Barrick to operate NGM. In the event that Barrick has
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interests, objectives and incentives with respect to NGM that differ from our own, there can be no assurance that we will be able to resolve such disagreement in our favor. Any such disagreement could have a material adverse effect on our interest in NGM, the business of NGM or the portion of our growth strategy related to NGM. Additionally, to the extent NGM is subject to liabilities or litigation, we would be responsible for a proportional share of certain liabilities and/or NGM’s operations could be impacted, which could have an adverse impact on the Company’s cash flows, earnings, results of operations and financial position.
Additionally, the Company is subject to certain funding requirements in connection with its joint ventures. Joint venture funding requirements, as well as the ability of partners to meet their financial and other obligations, may result in increases to our costs and required capital expenditures. See Note 16 to the Consolidated Financial Statements for more information including with respect to loan agreements with Pueblo Viejo.
Financial Risk
Increased exposure to foreign exchange fluctuations and capital controls may adversely affect Newmont’s costs, earnings and the value of some of our assets.
Our reporting currency is the U.S. dollar and the majority of our earnings and cash flows are denominated in U.S. dollars. We conduct certain business in currencies other than the U.S. dollar. A portion of our operating expenses are incurred in local currencies. The appreciation of those local currencies against the U.S. dollar increases our costs of production in U.S. dollar terms at mines located outside the United States. The foreign currencies that primarily affect our results of operations are the Australian Dollar and the Canadian Dollar. Our consolidated earnings and cash flows may also be impacted by movements in the exchange rates. Change in the value of the currencies of the Australian Dollar, Canadian Dollar, the Mexican Peso, the Argentine Peso, the Ghana Cedi, the Chilean Peso or Surinamese Dollar versus the U.S. dollar could negatively impact our earnings. For information concerning the sensitivity of our Costs applicable to sales to changes in foreign currency exchange rates and more information our exposure to foreign exchange rate fluctuations, see Foreign Currency Exchange Rates section in Item 7, Management’s Discussion and Analysis of Consolidated Financial Condition and Results of Operations.
In addition, from time to time, countries in which we operate adopt measures to restrict the availability of the local currency or the repatriation of capital across borders. These measures are imposed by governments or central banks, in some cases during times of economic instability, to prevent the removal of capital or the sudden devaluation of local currencies or to maintain in-country foreign currency reserves. In addition, many emerging market countries require consents or reporting processes before local currency earnings can be converted into U.S. dollars or other currencies and/or such earnings can be repatriated or otherwise transferred outside of the operating jurisdiction. These measures may have a number of negative effects on Newmont, reducing the immediately available capital that we could otherwise deploy for investment opportunities or the payment of expenses. In addition, measures that restrict the availability of the local currency or impose a requirement to operate in the local currency may create other practical difficulties for Newmont. For example, Argentina has been considered a hyperinflationary environment with a cumulative inflation rate of over 100% for the last four years. In recent years, Argentina’s central bank enacted a number of foreign currency controls in an effort to stabilize the local currency. These restrictions directly impact the timing of Cerro Negro's ability to remit cash from gold sales and pay interest and principal portions of intercompany debt to the Company. For more information, see Results of Consolidated Operations and Foreign Currency Exchange Rates sections in Item 7, Management’s Discussion and Analysis of Consolidated Financial Condition and Results of Operations.
Future funding requirements may affect our business, our ability to pay cash dividends or our ability to engage in share repurchase transactions.
Potential future investments, including projects in the Company’s project pipeline, acquisitions and other investments, will require significant funds for capital expenditures. Depending on gold, silver, copper, zinc and lead prices, our operating cash flow may not be sufficient to meet all of these expenditures, depending on the timing of development of these and other projects. As a result, new sources of capital may be needed to meet the funding requirements of these investments, fund our ongoing business activities, and fund construction and operation of potential future projects. Our ability to raise and service significant new sources of capital will be a function of macroeconomic conditions, future gold, silver, copper, zinc and lead prices as well as our operational performance, current cash flow and debt position, among other factors. We may determine that it may be necessary or preferable to issue additional equity or other securities, defer projects or sell assets. However, U.S. and global markets have, from time to time, experienced significant dislocations and liquidity disruptions, and the COVID-19 pandemic has increased, and may continue to increase, volatility and pricing in the capital markets. Additional financing may not be commercially available when needed or, if available, the terms of such financing may not be favorable to us and, if raised by offering equity securities, any additional financing may involve substantial dilution to existing shareholders. In the event of lower gold, silver, copper, zinc or lead prices, unanticipated operating or financial challenges, or new funding limitations, our ability to pursue new business opportunities, invest in existing and new projects, fund our ongoing business activities, retire or service all outstanding debt, repurchase shares and pay dividends could be significantly constrained. If we are unable to obtain financing or service existing or future debt we could be required to reduce, suspend or eliminate our dividend payments to stockholders or any planned share repurchase transactions. The Company’s repurchase program may be discontinued at any time, and the program does not obligate the Company to acquire any specific number of shares of its common stock or to repurchase the full authorized amount during the authorization period. Consequently, the Board of Directors may revise or terminate such share repurchase authorization in the future. See also the risk factor under the heading “Holders of our
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common stock may not receive dividends.” In addition, our joint venture partners may not have sufficient funds or borrowing ability in order to make their capital commitments. In the case that our partners do not make their economic commitments, the Company may be prevented from pursuing certain development opportunities or may assume additional financial obligations, which may require new sources of capital.
Our long-lived assets and goodwill could become impaired, which could have a material non-cash adverse effect on our results of operations.
We review our operations for events and circumstances that could indicate that the carrying value of our long-lived assets may not be recoverable. If indicators of impairment are determined to exist at our mine operations, we review the recoverability of the carrying value of long-lived assets by estimating the future undiscounted cash flows expected to result from the use and eventual disposition of the asset. We also review our goodwill for impairment annually and when events or changes in circumstances indicate that the carrying value of a reporting unit exceeds its fair value. Management makes multiple assumptions in estimating future cash flows, which include production levels based on life of mine plans, future costs of production, estimates of future production levels based on value beyond proven and probable reserves at our operations, prices of metals, the historical experience of our operations and other factors. There are numerous uncertainties inherent in estimating production levels of gold, silver, copper, zinc and lead and the costs to mine recoverable reserves, including many factors beyond our control, that could cause actual results to differ materially from expected financial and operating results or result in future impairment charges. We may be required to recognize material non-cash charges relating to impairments of long-lived assets and/or goodwill in the future if actual results differ materially from management’s estimates, which include metal prices, our ability to reduce or control production costs or capital costs through strategic mine optimization initiatives, increased costs or decreased production due to regulatory issues or if we do not realize the mineable reserves, resources or exploration potential at our mining properties. If an impairment charge is incurred, such charges are not reversible at a later date even when favorable modifications to our proven and probable reserves and measured, indicated and inferred resources, favorable revisions to environmental obligations, favorable changes in legislation and/or our political or economic environment, or other favorable events occur. As a result of these uncertainties, our operating results may be significantly impacted from both the impairment and the underlying trends in the business that triggered the impairment, and actual results may be less favorable than estimated returns and initial financial outlook. For additional information regarding goodwill, see Note 20 to our Consolidated Financial Statements.
Our ability to recognize the benefits of deferred tax assets is dependent on future cash flows and taxable income.
We recognize the expected future tax benefit from deferred tax assets when the tax benefit is considered to be more likely than not of being realized, otherwise, a valuation allowance is applied against deferred tax assets. Assessing the recoverability of deferred tax assets requires management to make significant estimates related to expectations of future taxable income. Estimates of future taxable income are based on forecasted cash flows from operations and the application of existing tax laws in each jurisdiction. To the extent that future cash flows and taxable income differ significantly from estimates, our ability to realize the deferred tax assets could be impacted. In the future, our estimates could change requiring a valuation allowance or impairment of our deferred tax assets. Additionally, future changes in tax laws could limit our ability to obtain the future tax benefits represented by our deferred tax assets. See Note 12 to our Consolidated Financial Statements under the heading “Income and Mining Taxes - Valuation of Deferred Tax Assets” and Note 2 under the heading “Summary of Significant Accounting Policies - Valuation of Deferred Tax Assets” for additional information and factors that could impact the Company’s ability to realize the deferred tax assets. For additional information regarding Newmont’s non-current deferred tax assets, see Note 12 to our Consolidated Financial Statements.
Any downgrade in the credit ratings assigned to our debt securities could increase our future borrowing costs and adversely affect the availability of new financing.
There can be no assurance that any rating currently assigned by Standard & Poor’s Rating Services or Moody’s Investors Service to Newmont will remain unchanged for any given period of time or that a rating will not be lowered if, in that rating agency’s judgment, future circumstances relating to the basis of the rating so warrant. If we are unable to maintain our outstanding debt and financial ratios at levels acceptable to the credit rating agencies, or should our business prospects or financial results deteriorate, our ratings could be downgraded by the rating agencies. The Company’s credit ratings have been subject to change over the years. We currently maintain a Standard & Poor’s rating of “BBB” (positive outlook) and a Moody’s Investors Service rating of Baa1 (stable). We cannot make assurances regarding how long these ratings will remain unchanged or regarding the outcome of the rating agencies future reviews (including following any planned or future business combinations). A downgrade by the rating agencies could adversely affect the value of our outstanding securities, our existing debt and our ability to obtain new financing on favorable terms, if at all, and increase our borrowing costs, which in turn could impair our results of operations and financial position.
Returns for investments in pension plans are uncertain.
We maintain pension plans for certain employees which provide for specified payments after retirement. The Company’s qualified pension plans are funded with cash contributions in compliance with IRS rules and regulations. The Company’s non-qualified and other benefit plans are currently not funded, but exist as general corporate obligations. See Note 13 to our Consolidated Financial Statements under the heading “Pension and Other Benefit Plans” for additional information regarding the funding status of qualified and non-qualified plans. The Company reviews its retirement benefit programs on a regular basis and will consider market conditions
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and the funded status of its qualified pension plans in determining whether additional contributions are appropriate. The ability of the pension plans to provide the specified benefits depends on our funding of the plans and returns on investments made by the plans. Returns, if any, on investments are subject to fluctuations based on investment choices and market conditions. A sustained period of low returns or losses on investments could require us to fund the pension plans to a greater extent than anticipated. If future plan investment returns are not sufficient, we may be required to increase the amount of future cash contributions.
Risks Related to Our Industry
We may experience increased costs or losses resulting from the hazards and uncertainties associated with mining.
The exploration for natural resources and the development and production of mining operations are activities that involve a high level of uncertainty. These can be difficult to predict and are often affected by risks and hazards outside of our control. These factors include, but are not limited to:
Environmental hazards, including discharge of metals, concentrates, pollutants or hazardous chemicals;
Industrial accidents, including in connection with the operation of mining equipment, milling equipment and/or conveyor systems and accidents associated with the preparation and ignition of large-scale blasting operations, milling and processing;
Accidents in connection with transportation, including transportation of chemicals, explosions or other materials, transportation of large mining equipment and transportation of employees and business partners to and from sites;
Social, community or labor force disputes resulting in work stoppages or shipping delays, such as at Peñasquito, Cerro Negro, Merian and Akyem, or related loss of social acceptance of community support;
Changes to legal and regulatory requirements;
Security incidents, including activities of illegal or artisanal miners, gold bullion or concentrate theft, including in transport, and corruption and fraud;
Shortages in materials or equipment and energy and electrical power supply interruptions or rationing;
Failure of unproven or evolving technologies or loss of information integrity or data;
Unexpected geological formations or conditions (whether in mineral or gaseous form);
Metallurgical conditions and gold, silver, copper, lead, zinc and other metal recovery, including unexpected decline of ore grade;
Unanticipated changes in inventory levels at heap-leach operations;
Ground and water conditions;
Fall-of-ground accidents in underground operations;
Failure of mining pit slopes and tailings dam walls;
Seismic activity;
Surface or underground fires or floods; and
Other natural phenomena, such as lightning, cyclonic or tropical storms, floods or other inclement weather conditions, including those impacting operations or the ability to access and supply sites.
The occurrence of one or more of these events in connection with our exploration activities, development and production and closure of mining operations may result in the death of, or personal injury to, our employees, other personnel or third parties, the loss of mining equipment, damage to or destruction of mineral properties or production facilities, monetary losses, deferral or unanticipated fluctuations in production, environmental damage and potential legal liabilities, all of which may adversely affect our reputation, business, prospects, results of operations and financial position.
We compete with other natural resource companies, and shortage of critical parts and equipment may adversely affect our operations and development projects.
We compete with other natural resource companies for specialized equipment and supplies necessary for exploration and development, as well as for rights to mine properties containing gold, silver, copper, zinc, lead and other minerals. The mining industry has been impacted, from time to time, by increased demand for critical resources such as input commodities, drilling equipment, trucks, shovels and tires. These shortages have, at times, impacted the efficiency of our operations, and resulted in cost increases and delays in construction of projects; thereby impacting operating costs, capital expenditures and production and construction schedules. We may be unable to obtain the services of skilled personnel and contractors or specialized equipment or supplies, or to acquire additional rights to mine properties, which could have an adverse effect on our competitive position or adversely impact our results of operations.
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We may be unable to obtain or retain necessary permits, which could adversely affect our operations.
Our mining and processing operations and development and exploration activities are subject to extensive permitting requirements. The requirements to obtain and/or achieve or maintain full compliance with such permits can be costly and involve extended timelines. While we strive to obtain and comply with all permits required of us, there can be no assurance that we will obtain all such permits and/or achieve or maintain full compliance with such permits at all times. Previously obtained permits may be suspended or revoked for a number of reasons, including through government or court action. Failure to obtain and/or comply with required permits can have serious consequences, including damage to our reputation; cessation of the development of a project; increased costs of development or production and litigation or regulatory action, any of which could materially adversely affect our business, results of operations or financial condition.
Our ability to obtain the required permits and approvals to explore for, develop and operate mines and to successfully operate near communities in the jurisdictions in which we operate depends in part on our ability to develop, operate and close mines in a manner that is consistent with the creation of social and economic benefits in the surrounding communities, which may or may not be required by law. Our ability to obtain permits and approvals and to operate near certain communities may be adversely impacted by real or perceived detrimental events associated with our activities or those of other mining companies affecting the environment, health and safety of communities in which we operate. Key permits and approvals may be revoked or suspended or may be adjusted in a manner that adversely affects our operations, including our ability to explore or develop properties, commence production or continue operations.
Mining companies are increasingly required to consider and provide benefits to the communities and countries in which they operate in order to maintain operations.
Greater scrutiny on the private sector broadly and multi-national companies specifically, to contribute to sustainable outcomes in the places where they operate, has led to a proliferation of standards and reporting initiatives focused on environmental stewardship, social performance and transparency. Extractive industries, and mining in particular, have seen significant increases in stakeholder expectations. These businesses are increasingly required to meaningfully engage with impacted stakeholders; understand and avoid or mitigate negative impacts while optimizing economic development and employment opportunities associated with their operations. The expectation is for companies to create shared value for shareholders, employees, governments, local communities and host countries. Such expectations tend to be particularly focused on companies whose activities are perceived to have high socio-economic and environmental impacts. In response, Newmont has over many years developed and continues to evolve a robust system of ESG management that includes standards, guidance, assurance, participation in international organizations focused on improved performance and outcomes for host communities and the environment. In Ghana, for instance, in response to resettlement-related complaints, Newmont worked with national and local government authorities, traditional leaders, impacted farmers/landowners and other concerned stakeholders to analyze impacts, extend programs to support vulnerable households and provide enhanced livelihood support. Despite the Company’s commitment to on-going engagement with communities and stakeholders, no assurances can be provided that increased stakeholder expectations will not result in adverse financial and operational impacts to the business, including, without limitation, operational disruption, increased costs, increased investment obligations and increased taxes and royalties payable to governments.
Illegal mining and artisanal mining occurs on or adjacent to certain of our properties exposing such sites to security risks.
Artisanal and illegal miners have been active on, or adjacent to, some of Newmont’s African and South American properties, including in Suriname and Ghana in recent years. For example, in Ghana in 2019, illegal miners attacked a field team of security guards employed by a security contractor, tragically resulting in a fatality. Illegal mining, which involves trespass into the development or operating area of the mine, is both a security and safety issue, which may present a security threat to property and human life. The illegal miners from time to time have clashed with security staff and law enforcement personnel who have attempted to move them away from the facilities. Although, under certain circumstances, artisanal mining may be a legally sanctioned activity, artisanal mining is also associated with a number of negative impacts, including environmental degradation, poor working practices, erosion of civil society, human rights abuse and funding of conflict. The environmental, social, safety and health impacts of artisanal and illegal mining are frequently attributed to formal large scale mining activity, and it is often assumed that artisanally-mined gold is channeled through large-scale mining operators, even though artisanal and large-scale miners normally have separate and distinct supply chains. These misconceptions impact negatively on the reputation of the industry. The activities of the illegal miners could cause damage to Newmont’s properties or result in inappropriate or unlawful use of force for which Newmont could potentially be held responsible. The presence of illegal miners could lead to exploration and project delays and disputes regarding the development or operation of commercial gold deposits. Illegal mining and theft could also result in lost gold production and reserves, mine and development stoppages, and have a material adverse effect on financial condition or results of operations or project development.
Civil disturbances and criminal activities can disrupt business and expose the Company to liability.
Civil disturbances and criminal activities such as trespass, illegal mining, sabotage, theft, blockades and vandalism may cause disruptions and could result in the suspension of operations, delays to project development and negative impacts on exploration activities at certain sites. Incidents of such activities have occasionally led to conflict with security personnel and/or police, which in
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some cases resulted in injuries including in Ghana, Peru, Mexico and Suriname. Additionally some areas in which we conduct operations, develop projects and exploration activities are affected by persistent violence and crime, such as in Mexico.
Although security measures have been implemented by the Company to protect employees, community members, property and assets, such measures will not guarantee that such civil disturbances and criminal activities will not continue to occur in the future, or result in harm to employees, community members or trespassers, decrease operational efficiency or construction delays, increase community tensions or result in liabilities or reputational harm to Newmont. Security incidents, in the future, may have a material adverse effect on our operations, including reclamation activities, especially if criminal activity and violence continue to escalate. Such incidents may halt or delay production, increase operating costs; result in harm to employees, contractors, visitors or community members; decrease operational efficiency due to employee absenteeism and other factors; increase community tensions or otherwise adversely affect our ability to conduct business. The manner in which the Company’s personnel, national police or other security forces respond to civil disturbances and criminal activities can give rise to additional risks where those responses are not conducted in a manner consistent with international and Newmont standards relating to the use of force and respect for human rights. Newmont takes seriously our obligation to respect and promote human rights, is a signatory to and active participant in the Voluntary Principles on Security and Human Rights, and has adopted a Sustainability and Stakeholder Engagement Policy and Human Rights Standard in-line with the UN Guiding Principles on Business and Human Rights. Nonetheless, although the Company has implemented a number of significant measures and safeguards which are intended to ensure that personnel understand and uphold these standards, the implementation of these measures will not guarantee that personnel, national police or other security forces will uphold these standards in every instance. The evolving expectations related to human rights, indigenous rights, and environmental protections may result in opposition to our current and future operations, the development of new projects and mines, and exploration activities. Such opposition may take the form of legal or administrative proceedings or manifestations such as protests, roadblocks or other forms of public expression against our activities, and may have a negative impact on our local or global reputation and operations. Opposition by community and activist groups to our operations may require modification of, or preclude the operation or development of, our projects and mines or may require us to enter into agreements with such groups or local governments with respect to our projects and mines or exploration activities, in some cases, causing increased costs and significant delays to the advancement of our projects. For example, in Peru, our Conga project faced opposition from anti-mining activists, after which we suspended construction on the project’s mining facilities and eventually reclassified Conga’s reserves to resource as the result of certain operating and construction permits expiring at the end of 2015. The failure to conduct operations in accordance with Company standards can result in harm to employees, community members or trespassers, increase community tensions, reputational harm to Newmont or result in criminal and/or civil liability and/or financial damages or penalties.
Our operations face substantial regulation of health and safety.
Our operations are subject to extensive and complex laws and regulations governing worker health and safety across our operating regions and our failure to comply with applicable legal requirements can result in substantial penalties. Future changes in applicable laws, regulations, permits and approvals or changes in their enforcement or regulatory interpretation could substantially increase costs to achieve compliance, lead to the revocation of existing or future exploration or mining rights or otherwise have an adverse impact on our results of operations and financial position.
Our mines are inspected on a regular basis by government regulators who may issue citations and orders when they believe a violation has occurred under local mining regulations. If inspections result in an alleged violation, we may be subject to fines, penalties or sanctions and our mining operations could be subject to temporary or extended closures.
In addition to potential government restrictions and regulatory fines, penalties or sanctions, our ability to operate (including the effect of any impact on our workforce) and thus, our results of operations and our financial position (including because of potential related fines and sanctions), could be adversely affected by accidents, injuries, fatalities or events detrimental (or perceived to be detrimental) to the health and safety of our employees, the environment or the communities in which we operate.
Our operations are subject to extensive environmental laws and regulations.
Our exploration, development, mining and processing operations, and closed facilities are subject to extensive laws and regulations governing land use and the protection of the environment, which generally apply to air and water, protection of endangered, protected or other specified species, hazardous and non-hazardous waste management and reclamation. Many of the countries in which we operate have laws and regulations related to water (quality and quantity), nature and greenhouse gas (“GHG") emissions which are becoming increasingly more stringent. We have made, and expect to make in the future, significant expenditures to comply with such laws and regulations. Compliance with these laws and regulations imposes substantial costs and burdens, and can cause delays in obtaining, failure to obtain or renew, or cancellation of, government permits and approvals which may adversely impact our operations and closure processes. Increased global attention or regulation on consumption of shared resources and use products or development of waste that have the potential to impact human health and the environment could similarly have an adverse impact on our results of operations and financial position due to increased compliance and input costs.
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Our operations are subject to a range of risks related to transitioning the business to meet regulatory, societal and investor expectations for operating in a low-carbon economy.
Climate change and the transition to a low-carbon economy is expected to impact Newmont in a number of ways. Producing gold is an energy-intensive business, currently resulting in a significant carbon footprint. Transitioning to a lower-carbon economy will require significant investment and may entail extensive policy, legal, technology, and market changes to address mitigation and adaptation requirements related to climate change. Depending on the nature, speed, focus and jurisdiction of these changes, transition risks may pose varying levels of financial and reputational risk to the business.
A number of governments or governmental bodies have introduced or are contemplating regulatory changes in response to the potential impacts of climate change that are viewed as the result of emissions from the combustion of carbon-based fuels. At the 21st Conference of the Parties of the United Nations Framework Convention on Climate Change (“UNFCC”) held in Paris in 2015, the Paris Agreement was adopted which was intended to govern emission reductions beyond 2020. Newmont supports the UNFCC goal of limiting global warming to “well below 2oC” compared to pre-industrial levels and plans to transition its operations to meet this goal by 2030, with an aspiration of carbon neutrality by 2050. In 2020, Newmont also announced plans to significantly invest in climate change initiatives in support of this goal, and additional material investments and capital expenditures may be required in order to meet our climate targets in the future. Inconsistent implementation or significant delay in the implementation of country-level policy related to the Paris Agreement and enhanced framework objectives announced at the most recent annual UN Climate Change Conference of the Parties (COP26) in November 2021 are likely to increase the risk for future swings in regulatory impacts and rapid shifts to low-carbon technologies.
Policy and regulatory risk related to actual and proposed changes in climate- and water-related laws, regulations and taxes developed to regulate the transition to a low-carbon economy may result in increased costs for our operations, venture partners and our suppliers, including increased energy, capital equipment, environmental monitoring and reporting and other costs to comply with such regulations. Regulatory uncertainty may incur higher costs and lower economic returns than originally estimated for new development projects and operations, including closure reclamation obligations. For example, operational and capital expenses are expected to increase in order to meet renewable portfolio standard requirements by 50% or greater from current costs over the next 10 years in Australia, Canada, Mexico and the U.S. carbon taxes, fuel switching and the transition to cleaner purchased power and/or on-site renewable energy generation will require significant upfront capital expenditures and may also increase operating costs. As another example, the carbon tax in Canada of $30CAD/tonne of CO2 is expected to increase to $50CAD/tonne in 2022, impacting operating costs at our Canadian operations. We expect the potential for similar tax increases in other jurisdictions. Additionally, we do not maintain insurance policies against such climate-related risks or taxes.
The development and deployment of technological improvements or innovations will be required to support the transition to a low-carbon economy, which could result in write-offs and early retirement of existing assets, increased costs to adopt and deploy new practices and processing including planning and design for mines, development of alternative power sources, site level efficiencies and other capital investments. We will also be evaluating the use of carbon offsets to support meeting our targets for those hard to abate emissions.
There will be varied and complex market impacts due to climate change and the transition to a low-carbon economy. There will be shifts in supply and demand for certain commodities, products and services in connection with evolving consumer and investor sentiments. Market perceptions of the mining sector, and, in particular, the role that certain metals will or will not play in the transition to a low-carbon economy remains uncertain. Potential financial impacts may include reduced investment in gold due to shift in investor sentiment, increased production costs due to changing input prices, re-pricing of land valuation and assets, increased global competition for key materials needed for new technologies (lithium, copper, rare earth minerals used in solar technology, etc.), potential costs increases by insurers and lenders, and potential increases in taxation of the mining and metals sector.
Should the mining and metals sector not respond quickly enough to meeting globally accepted science-based reductions required to mitigate the long-term impacts of climate change, industry members may be subject to an increased risk of future climate litigation. In the U.S. and Canada, lawsuits have been filed against oil and gas companies to assign liability for climate-related impacts. Over time, litigation may also apply to other resource intensive sectors that fail to set and/or meet long-term reduction targets. While the Company is not currently subject to any lawsuits related to climate, no assurances can be provided that similar suits will not be brought in the future.
A failure to meet our climate strategy commitments and/or societal or investor expectations could also result in damage to our reputation, decreased investor confidence and challenges in maintaining positive community relations, which can pose additional obstacles to our ability to conduct our operations and develop our projects, which may result in a material adverse impact on our business, financial position, results of operations and growth prospects. Further, the Company’s financing strategy is tied to its ESG commitments. The interest rate of Newmont’s $1 billion aggregate principal amount of 2.600% Sustainability-Linked Senior Notes due 2032 (the “Notes”) is linked to Newmont’s performance against key ESG commitments regarding 2030 emissions reduction targets and the representation of women in senior leadership roles target. The interest rate margin of Newmont’s $3.0 billion sustainability-linked revolving credit facility is also subject to adjustment based on the Company’s ESG scores. As such, a failure to meet our climate and sustainability targets can result in further expense and impact our liquidity and financial condition.
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Our targets are uniquely tailored to our business, operations and capabilities, which do not easily lend to benchmarking against similar sustainability performance targets, and the related performance, of other companies. We will review our targets and sustainability framework from time to time, which may result in amendments in the future. Newmont may choose to adopt more ambitious targets in the future in connection with evolving best practices and market demand, which may be increasingly challenging and costly to achieve. Additionally, the methodologies that we use to calculate our Scope 1, Scope 2 and Scope 3 GHG emissions may change over time based upon changing industry standards, which may impact, positively or negatively, our ability to satisfy our targets, which could in turn adversely affect our reputation. Any major acquisition, merger, consolidation or divestiture or any series of related acquisitions, mergers, consolidations or divestitures by or involving us may impact our ability to achieve our targets and commitments. There is currently no generally accepted global definition (legal, regulatory or otherwise) of, nor market consensus as to what criteria qualify as, “green,” “social,” “sustainable” or “sustainability-linked” (and, in addition, the requirements of any such label may evolve from time to time), and therefore no assurance is or can be given that Newmont will meet any or all investor expectations.
Our operations are subject to a range of transitional and physical risks related to climate change.
We believe that climate change has the potential to impact the regions and sites in which Newmont operates. Long-term potential physical climate risks include, but are not limited to, higher temperature in all regions, higher intensity storm events in all regions, impacts to annual precipitation depending upon the latitude and proximity of the site to oceans, and more extreme heat for sites near the equator or in Australia.
Physical risks related to extreme weather events such as extreme rainfall, flooding, longer wet or dry seasons, increased temperatures and drought, increased precipitation and snowfall, wildfires or brushfires, or more severe storms may have financial implications for the business. For example, we experienced severe flooding in early 2017 at our Tanami mine in Australia which led to shutdown of operations for several weeks. In 2019, Tanami completed the construction of a natural gas pipeline to deliver fuel to the site to replace diesel fuel that is trucked to the site on roads that regularly flood due to increasing seasonal rainfall. Our operations in Suriname and Peru have also experienced delays in the connection with the delivery of key production supplies due to temporary flooding. Severe storm events can also result in unpermitted off-site discharges, slope instability, mine pit erosion and structural failures, tailings storage facility overtopping and other impacts, including water storage and treatment facility capacity considerations.
Such events can temporarily slow or halt operations due to physical damage to assets, reduced worker productivity for safety protocols on site related to extreme temperatures or lightening events, worker aviation and bus transport to or from the site, and local or global supply route disruptions that may limit transport of essential materials, chemicals and supplies , which could have an adverse impact on our results of operations and financial position. Additional financial impacts could include increased capital or operating costs to increase water storage and treatment capacity, obtain or develop maintenance and monitoring technologies, increase resiliency of facilities and establish supplier climate resiliency and contingency plans.
An increase in frequency and duration of extreme weather conditions can be followed by extended power outages. Energy disruptions can have an adverse impact on our results of operations and financial position due to production delays or additional costs to ensure business continuity through reliable sources of on-site power generation. Energy transmission and supply may be impacted by wildfires, such as those that occurred in Australia in 2020, which may interrupt electrical power transmission lines to mine sites, and that may pose risks to on site facilities and energy generators, fuel dispensing systems and supplies. In jurisdictions that rely on purchased hydroelectric power, such as in Ghana, extreme drought and extended dry seasons may impact the electric utility’s water supplies needed to generate hydroelectric power purchased by the mine to run operations, which would result in higher costs and/or limit energy availability for continuity of operations as well as impact our environmental systems and processes.
Our Company and the mining industry are facing continued geotechnical challenges, which could adversely impact our production and profitability.
Newmont and the mining industry are facing continued geotechnical challenges due to the older age of certain of our mines and a trend toward mining deeper pits and more complex deposits. This leads to higher pit walls, more complex underground environments and increased exposure to geotechnical instability and hydrogeological impacts. As our operations are maturing, the open pits at many of our sites are getting deeper and we have experienced geotechnical failures (such as pit wall and slope failures) at some of our mines, including, without limitation, at our operations in Australia, Ghana, Peru, Canada, Colorado and at NGM, in Nevada. See also the risk factor under the heading “Mining companies are increasingly required to consider and provide benefits to the communities and countries in which they operate in order to maintain operations”.
Unanticipated adverse geotechnical and hydrogeological conditions, may occur. For example, seismic activity, such as seismic activity experienced at our Éléonore mine, surface or underground fires, floods, landslides and pit wall failures, can be difficult to predict. Such conditions are often affected by risks and hazards outside of our control, such as severe weather and considerable rainfall, which may lead to periodic floods, mudslides, wall instability and seismic activity, which may result in slippage of material. Such events may not be detected in advance.
In addition, Newmont has both operational (active and inactive) and closed tailings storage facilities ("TSFs") in a variety of climatic and geographic settings. Annually, Newmont manages and disposes more than 100 million tonnes of milled rock slurry, referred to as tailings, that are placed within engineered, surface containment facilities, or placed as structural backfill paste in underground mines. The failure of TSF embankment or a water storage dam at one of our mine sites could cause severe, and in some
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cases catastrophic, property and environmental damage and loss of life. For example, in early 2019, the extractive industry experienced a large-scale tailings dam failure at an unaffiliated mine in Brazil, which resulted in numerous fatalities and caused extensive property, environmental and reputational damage. Recognizing this risk, Newmont continues to review our existing practices and worked with the International Council on Mining & Metals to develop the Global Industry Standard on Tailings Management (“GISTM”). Newmont is committed to the implementation of the GISTM and all TSFs are expected to be in conformance with the GISTM by 2025. Compliance with the GISTM remains on-going and has and may continue to result in increases to our estimated sustaining costs and closure costs for existing facilities. Despite these efforts, no assurance can be given that TSF failure events will not occur in the future.
A geotechnical failure of a TSF, dam, or pit slope could result in limited or restricted access to mine sites, suspension of operations, government investigations, regulatory actions or penalties, increased monitoring costs, remediation costs and other impacts, which could result in a material adverse effect on our results of operations and financial position. See also the risk factors under the heading “We may experience increased costs or losses resulting from the hazards and uncertainties associated with mining” and “Damage to our reputation may result in decreased investor confidence, challenges in maintaining positive community relations and can pose additional obstacles to our ability to develop our projects, which may result in a material adverse impact on our business, financial position, results of operations and growth prospects.”
Our operations may be adversely affected by rising energy prices or energy shortages.
Our mining operations and development projects require significant amounts of energy. Some of our operations are in remote locations requiring long-distance transmission of power, and in some locations we compete with other companies for access to third party power generators or electrical supply networks. A disruption in the transmission of energy, inadequate energy transmission infrastructure or the termination of any of our energy supply contracts could interrupt our energy supply and adversely affect our operations.
Energy costs accounted for more than 15 percent of our overall operating costs in 2021, with our principal energy sources being purchased electricity, diesel fuel, gasoline, natural gas and coal. Increasing global demand for energy, concerns about nuclear power and the limited growth of new energy sources are affecting the price and supply of energy. A variety of factors, including higher energy usage in emerging market economies, actual and proposed taxation of carbon emissions as well as concerns surrounding unrest and potential conflict in the Middle East or elsewhere, could result in increased demand or limited supply of energy and/or sharply escalating diesel fuel, gasoline, natural gas and other energy prices. Availability of renewable power sources or conflicting government regulations, such as the proposed reform of the energy market in Mexico, may have an impact on our ability to meet our reduction targets with a specific timeline. Changes in energy laws and regulations in various jurisdictions, restrictions on energy supply and increased energy prices could negatively impact our operating costs and cash flow.
As our operations move to reduce our GHG emissions, power sources and technology at our operations will continue to be evaluated and implemented. Such transitions are likely to require capital expenditures and may result in additional costs. Certain of our operations may also become more dependent upon access to electrical power supply as certain mines advance projects aimed at the electrification of large haulage fleets. See the risk factor above under the heading “Our operations are subject to a range of risks related to transitioning the business to meet regulatory, societal and investor expectations for operating in a low-carbon economy”.
Our operations are dependent on the availability of sufficient water supplies and subject to water-related risks.
We recognize the right to clean, safe water and that reliable water supplies are vital for hygiene, sanitation, livelihoods and the health of the environment. Water is also critical to our business, and the increasing pressure on water resources requires us to consider both current and future conditions in our management approach. We have set annual water efficiency targets at each of our operating sites. Additionally, over the next five years, we aim to achieve ambitious long-term water stewardship actions, which integrate our operations and value chain and support collective management of water through external partnerships and collaborations. A failure to meet our water targets and/or societal or investor expectations could also result in damage to our reputation, decreased investor confidence and challenges in maintaining positive community relations, which can pose additional obstacles to our ability to develop our projects, which may result in a material adverse impact on our business, financial position, results of operations and growth prospects.
Across the globe, water is a shared and regulated resource. Newmont operates in areas where watersheds are under stress with limited supply, increasing population and water demand, and impacted water in various forms. Increasing pressure on water use may occur due to in-migration of communities and increased populations in proximity to our operations. Although each of our operations currently has sufficient water rights, claims and contracts to cover its operational demands, we cannot predict the potential outcome of pending or future legal proceedings or community negotiations relating to our water rights, claims, contracts and uses.
Water shortages and surplus may also result from weather or climate impacts outside of the Company’s control. Changes in the quantity of water, whether in excess or deficient amounts, may impact exploration and development activities, mining and processing operations, water management and treatment facilities, tailings storage facilities, closure and reclamation efforts, and may increase levels of dust in dry conditions and land erosion and slope stability in case of prolonged wet conditions. Our Peñasquito and CC&V operations are situated in areas with high baseline water stress. CC&V in Colorado must purchase water supply from surrounding communities. Peñasquito in Mexico takes its water supply from the Cedros Aquifer which has limited and declining yield as it is located in a dry and arid area that is prone to drought, and also is relied upon by nearby communities as a water supply for drinking water and
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agriculture. The water supply at Peñasquito is thus subject to a significant degree of regulatory and community scrutiny, and Peñasquito has made long-term commitments to provide safe community water supplies. Seasonality and changes in the levels of rainfall can also impact our operations. For example, at Boddington in Australia unusually severe weather and heavy rainfall at Boddington caused delays and impacted productivity the third quarter of 2021. There is also a risk at Boddington that extended below average rainfall or the occurrence of drought in southwest Australia could impact raw water supply for the site. While we have incorporated systems to address the impact of the dry season and water shortages as part of our operating plans, we can make no assurances that those systems will be sufficient to address all shortages in water supply, which could result in production and processing interruptions.
Increased precipitation and severe storm events may potentially impact tailings storage facilities by exceeding water management capacity, overtopping the facility, and/or undermining the geotechnical stability of the structure. Increased amounts of water may also result in flooding of mine pits, maintenance and storage facilities; or may exceed current water management and treatment capacity to store and treat water, physical conditions resulting in an unintended overflow and discharge either on or off of the mine site property. See the risk factor above under the heading “Our operations are subject to a range of risks related to transitioning the business to meet regulatory, societal and investor expectations for operating in a low-carbon economy” for additional information.
Laws and regulations may be introduced in some jurisdictions in which we operate which could limit our access to sufficient water resources in our operations, thus adversely affecting our operations. Additionally, laws, regulations and permit requirements focused on water management and discharge requirements for operations and water treatment in closure are becoming increasingly stringent. For example, at our Peñasquito operation, regulators have asserted non-conformance of water wells and subsequent use of ground water. A failure to resolve such allegations of non-compliance with regulators could result in loss of permits and restriction of such wells, which could impact our ability to operate the site. We are also seeing increasingly stringent regulations of surface and groundwater at a number of our sites resulting in increased monitoring and potentially the need for pump back systems and treatment in the future. New requirements and regulation have resulted or may result in increased costs and could negatively impact our operating costs and cash flows in the future.
For more information on the Company’s reclamation and remediation liabilities, see Notes 6 and 26 to the Consolidated Financial Statements, and the risk factor under the heading “Mine closure, reclamation and remediation costs for environmental liabilities may exceed the provisions we have made.”
Risks Related to the Jurisdictions in Which We Operate
Our operations are subject to risks of doing business in multiple jurisdictions.
Exploration, development, production and mine closure activities are subject to regional, political, economic, community and other risks of doing business in multiple jurisdictions, including:
Potential instability of foreign governments and changes in government policies, including relating to or in response to changes of U.S. laws or foreign policies;
Expropriation or nationalization of property;
Restrictions on the ability to pay dividends offshore or to otherwise repatriate funds;
Restrictions on the ability of local operating companies to sell gold and other metals offshore for U.S. dollars, or on the ability of such companies to hold U.S. dollars or other foreign currencies in offshore bank accounts;
Import and export regulations, including restrictions on the export of gold, silver, copper, zinc and/or lead;
Disadvantages relating to submission to the jurisdiction of foreign courts or arbitration panels or enforcement or appeals of judgments at foreign courts or arbitration panels against a sovereign nation within its own territory;
Royalty and tax increases or claims, including retroactive increases and claims and requests to renegotiate terms of existing investment agreements, contracts of work, leases, royalties and taxes, by governmental entities, including such increases, claims and/or requests by the governments of Argentina, Australia, Canada, Chile, the Dominican Republic, Ghana, Mexico, Peru, Suriname, the State of Colorado and the State of Nevada in the U.S.;
Changes in laws or regulations in the jurisdictions in which we operate, including in changes resulting from changes in political administrations, for example NGM could be impacted by the resolutions before the State of Nevada Legislature to amend the State Constitution to increase mining taxes;
Risk of increased taxation related to impacts to government revenue as a result of COVID-19;
Fines, fees, and sanctions imposed for failure to comply with the laws and regulations of the jurisdictions in which we operate;
Risk of loss due to inability to access our properties or operations;
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Other risks arising out of foreign sovereignty over the areas in which our operations are conducted, including risks inherent in contracts with government owned entities such as unilateral cancellation or renegotiation of contracts, licenses or other mining rights;
Delays in obtaining or renewing, or the inability to obtain, maintain or renew, necessary governmental permits, mining or operating leases and other agreements and/or approvals;
Risk of loss due to civil strife, acts of war, guerrilla activities, insurrection and terrorism;
Claims for increased mineral royalties or ownership interests by local or indigenous communities;
Risk of loss due to criminal activities such as trespass, blockade, local artisanal or illegal mining, theft and vandalism;
Delays in obtaining or renewing collective bargaining or certain labor agreements;
Disadvantages of competing against companies from countries that are not subject to the rigorous laws and regulations of the U.S. or other jurisdictions, including without limitation, the U.S. Foreign Corrupt Practices Act, the U.K. Bribery Act and the Dodd-Frank Act;
Increases in training and other costs and challenges relating to requirements by governmental entities to employ the nationals of the country in which a particular operation is located;
Increased financing costs;
Currency fluctuations, particularly in countries with high inflation;
Foreign exchange controls;
Increases in costs relating to, or restrictions or prohibitions on, the use of ports for concentrate storage and shipping, such as in relation to our Boddington operation where use of alternative ports is not currently economical, or in relation to our ability to procure economically feasible ports for developing projects;
Risk of disruption, damage or failure of information technology systems, and risk of loss and operational delays due to impacts to operational technology systems, such as due to cyber-attacks, malicious software computer viruses, security breaches, design failures and natural disasters;
Risk of loss due to disease, such as malaria or the zika virus, and other potential medical endemic or pandemic issues, such as Ebola or COVID-19, as a result of the potential related impact to employees, disruption to operations, supply chain delays, trade restrictions and impact on economic activity in affected countries or regions; and
Disadvantage and risk of loss due to the limitations of certain local health systems and infrastructure to contain diseases and potential endemic health issues.
Consequently, our exploration, development and production activities may be affected by these and other factors, many of which are beyond our control, some of which could materially adversely affect our financial position or results of operations.
New legislation and tax risks in certain operating jurisdictions could negatively affect us.
We have operations and conduct business in a number of jurisdictions, which may increase our susceptibility to sudden tax changes. For instance, a 12% export duty was imposed by the Argentine government in 2018, revised down to 8% thereafter, which could affect our Argentine operations. In the province of Santa Cruz, Argentina, a new local procurement law was passed requiring extractive industries to procure at least 50% of their goods and services from registered local providers, which could further impact our operational results. In the State of Zacatecas, Mexico, environmental taxes became effective in 2017 with little direction as to how the taxes are to be calculated, which required the Company, along with other companies in the State of Zacatecas, to engage with governmental authorities to understand how the environmental tax would be levied. Also, in Mexico, a 2021 tax reform bill proposed federal fees on revenue generated from mining which could impact our operations if passed. Furthermore, a new Economic Plan for 2022 (the "Proposal") was enacted. While the changes under the Proposal are not substantive in nature (in the sense that they do not create new taxes or increase applicable rates), they may increase the future cost of our compliance and pose additional uncertainties in application of the law. In the United States, at the federal and state level, regulatory changes which may be implemented in the area of tax reform remain uncertain and may adversely affect companies in the mining sector. For example, NGM could be impacted by the resolutions before the State of Nevada Legislature to amend the State Constitution to increase mining taxes. An example of this was the passing of Assembly Bill 495 that results in a new excise tax on mining companies engaged in the business of extracting gold and silver in the state of Nevada. Taxation laws and other regulations of the jurisdictions in which we operate are complex, subject to varying interpretations and applications by the relevant tax authorities and subject to changes and revisions in the ordinary course. It is difficult to predict whether proposed changes to regulations will be passed or to what extend they will impact the Company. Any additional and/or unexpected taxes imposed on us could have a material and adverse impact on our Company. See also the risk factor under the heading “Our operations are subject to a range of risks related to transitioning the business to meet regulatory, societal and investor expectations for operating in a low-carbon economy” for a discussion of uncertainties and potential tax increases in connection with climate change considerations.
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Changes in mining or investment policies or shifts in political and social attitudes in the jurisdictions in which we operate may adversely affect our operations or profitability.
Our operations may be affected in a number of ways by laws and regulations related, but not limited to: restrictions on production; price controls; export controls; import restrictions, such as restrictions applicable to, among other things, equipment, services and supplies, currency remittance, income taxes, expropriation of property, foreign investment, maintenance of mineral claims, environmental legislation, land use, surface land access, land claims of local communities, water use, and mine safety. Failure to comply strictly with applicable laws, regulations and local practices relating to mineral right applications and tenure could result in loss, reduction or expropriation of entitlements, or the imposition of additional local or foreign parties as partners with carried or other interests, any of which may adversely affect our operations or profitability.
In addition, as governments continue to struggle with deficits and concerns over the potential and actual effects of depressed economic conditions (including in connection with COVID-19 impacts), many of them have targeted the mining and metals sector in order to raise revenue. Governments are continually assessing the fiscal terms of the economic rent for a mining company to exploit resources in their countries. Numerous countries have implemented changes to their mining regimes that reflect increased government control over or participation in the mining sector, including, but not limited to, changes of law affecting foreign ownership and takeovers, mandatory government participation in mining enterprises, taxation and royalties, working conditions, rates of exchange, exchange controls, exploration licensing, export duties, repatriation of income or return of capital, environmental protection, as well as requirements intended to boost the local economy, including usage of local goods and employment of local and community staff or contractors, among other benefits to be provided to local residents. The effects of the various requirements and uncertainties related to the economic risks of operating in foreign jurisdictions cannot be accurately predicted and could have a material adverse effect on our financial position or results of operations. Some concern exists with respect to investments in parts of the world where civil unrest, war, nationalist movements, political violence or economic crises are possible. These countries may also pose heightened risks of expropriation of assets, business interruption, increased taxation or unilateral modification of concessions and contracts. We do not maintain insurance policies against political risk. Occurrence of events for which we are not insured may affect our results of operations and financial position.
Our operations at Yanacocha and the development of our Conga project in Peru are subject to political and social unrest risks.
Minera Yanacocha S.R.L. (“Yanacocha”), in which we own a 51.35% interest, and whose properties include the mining operations at Yanacocha and the Conga project in Peru, has been the target of local political and community protests, some of which blocked the road between the Yanacocha mine and Conga project complexes and the City of Cajamarca in Peru and resulted in vandalism and equipment damage. While recently roadblocks and protests have diminished and focused on local political activism and labor disputes, we cannot predict whether similar or more significant incidents will occur in the future. The recurrence of significant political or community opposition or protests could continue to adversely affect the Conga Project’s development, other new projects in the area and the continued operation of Yanacocha.
Construction activities on our Conga project were suspended in 2011, at the request of Peru’s central government following protests in Cajamarca by anti-mining activists led by the regional president. At the request of the Peruvian central government, the environmental impact assessment prepared in connection with the project was reviewed by independent experts in an effort to resolve allegations around the environmental viability of Conga. This review concluded that the environmental impact assessment complied with international standards and provided recommendations to improve water management. Based on the Company's internal project portfolio evaluation process, we have reprioritized other projects ahead of the Conga project, and therefore do not anticipate developing Conga in the next ten years. Due to the uncertainty surrounding the project’s development timeline, we have allocated our exploration and development capital to other projects in our portfolio. As a result, the Conga project is currently in care and maintenance and we will continue to evaluate long-term options to progress development of the Conga project. Should the Company be unable to develop the Conga project or conclude that future development is not in the best interest of the business, a future impairment charge may result.
The prior Central Government of Peru supported responsible mining as a vehicle for the growth and future development of Peru. However, following the most recent presidential election in 2021, whether the Central government will continue to take similar positions in the future remains uncertain. In a close and contested election, Pedro Castillo was declared the president-elect of Peru in July 2021, which resulted in a period of protests, unrest and uncertainty around the political and social environment in Peru and Cajamarca. Castillo’s election platform had been considered to be less supportive of mining in the past, and raised concerns with respect to foreign investment and mining. However, the Central Government’s legislative priorities and agenda remain to be established. Amidst political turmoil and instability, Castillo has appointed four prime ministers since taking office, and made a number of changes to his cabinet, including ministers of mining, work and interior. Additionally, previous regional governments of Cajamarca and other political parties actively opposed certain mining projects in the past, including by protests, community demands and road blockages, which may occur again in the future. We are unable to predict the positions that will be taken by the Central or regional government and neighboring communities in the future and whether such positions or changes in law will affect current operations and new projects at Yanacocha or Conga. Risks related to mining and foreign investment under the new administration include, without limitation, risks to mining concessions, land tenure and permitting, increased taxes and royalties, nationalization of mining assets and increased labor regulations, environmental and other regulatory requirements. Any change in government positions or laws on these issues could adversely affect
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the assets and operations of Yanacocha or Conga, which could have a material adverse effect on our results of operations and financial position. Additionally, the inability to develop Conga or operate at Yanacocha could have an adverse impact on our growth and production in the region. See also the risk factor under the heading “Mine closure, reclamation and remediation costs for environmental liabilities may exceed the provisions we have made” and refer to Note 1 to the Consolidated Financial Statements regarding the Company’s interest in Yanacocha.
Our Merian operation in Suriname is subject to political and economic risks.
We hold a 75% interest in the Merian gold mine in the mid-eastern part of Suriname. Suriname has experienced political instability and uncertainty in the past which may continue in future years. Suriname is faced with high debts to foreign creditors, significant inflation rates and is expected to become a hyperinflationary economy. Significant devaluation of the Surinamese dollar against the US dollar in recent years has resulted in an increase of the prices of certain goods and services within Suriname, including without limitation, the price of fuel, which had been subsidized by successive governments. These impacts and negative economic trends can cause social unrest, which may present risks for our operations in Suriname.
Operations and development in Suriname are governed by a mineral agreement with the Republic of Suriname. The mineral agreement was approved by parliament and requires approval by parliament to change. While the government is generally considered by the Company to be mining friendly, it is possible that the current or future government may adopt substantially different policies, make changes in taxation treatment or regulations, take arbitrary action which might halt operations, increase costs, or otherwise impact mining and exploration rights and/or permits, any of which could have a material and adverse effect on the Company's future cash flows, earnings, results of operations and/or financial condition. For example, the temporary solidarity levy increases the corporate tax rate in Suriname by 10% and VAT rate by 2% in 2021 and did not apply due to the terms of the mineral agreement. However, it is possible that the government may request changes to the mineral agreement in the future.
The government of Suriname previously exercised an option to participate in a fully-funded 25 percent equity ownership stake in Merian. Suriname manages its participation through Staatsolie Maatschappij Suriname N.V. (“Staatsolie”), a Surinamese corporation with the Republic of Suriname as sole shareholder. If Staatsolie does not have sufficient funds or borrowing ability to make their capital commitments in accordance with the terms of the partnership agreement our operations in Suriname could be impacted. See the risk factor under the heading “Future funding requirements may affect our business, our ability to pay cash dividends or our ability to engage in share repurchase transactions.” earlier in this section under “Risks Related to Our Business”.
Our operations at Ahafo and Akyem in Ghana are subject to political, economic and other risks.
Newmont operates in Ghana pursuant to a Revised Investment Agreement ratified by Ghana’s Parliament in 2015, which established a fixed fiscal and legal regime, including fixed royalty and tax rates, for Newmont operations in Ghana, to 2025 for Ahafo and 2027 for Akyem. However, since early 2018, and to address budgetary pressures, the Government of Ghana has initiated measures to mobilize additional revenue from the mining industry and other sectors of the economy as it attempts to increase revenue collection through various tax investigations, proposed new fees and other vehicles. There has been an increase in anti-mining sentiment in Ghana on the back of claims of the industry is not contributing its fair share to national development. These events may result in government claims that extra revenue is owed them by the Company and other mining companies operating in Ghana, resulting in increased revenue and tax initiatives. Additionally, the government may grant artisanal mining rights or alternative mining rights, such as sand and gravel, in locations in which the Company has land rights, but no active operations, impacting the Company’s non-operational land positions.
Our operations in Argentina are susceptible to risk as a result of economic and political instability in Argentina and labor unrest.
There continue to be risks relating to the uncertain and unpredictable political and economic environment in Argentina, especially at the provincial level in Santa Cruz where our Cerro Negro mine is located. Inflation remains a challenge in Argentina and Argentina’s central bank enacted a number of foreign currency controls in 2019 and 2020 in an effort to stabilize the local currency. For information on Argentina’s foreign currency controls and their effect on our operations, see the section titled “Foreign Currency Exchange Rates” in Item 7, Management’s Discussion and Analysis of Consolidated Financial Condition and Results of Operations. Maintaining operating revenues in Argentine pesos could expose us to the risks of peso devaluation and high domestic inflation.
In recent years, we experienced work stoppages by miners represented by unions at the Cerro Negro Mine. Disruptions may arise again in the future with the unions at the Cerro Negro mine or with the local communities and unions that could adversely affect access to, and operations at, the Cerro Negro Mine.
Risks Related to Our Workforce
Our business depends on good relations with our employees.
Production at our mines is dependent upon the efforts of our employees and, consequently, our maintenance of good relationships with our employees. Due to union activities or other employee actions, we could experience labor disputes, work stops or other disruptions in production that could adversely affect us. For example, in recent years, there have been work stoppages by miners
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represented by unions at our Cerro Negro, Merian and Akyem mines, which have disrupted operations. At December 31, 2021, various unions represented approximately 39% of our employee workforce worldwide. The terms and conditions contained in our Ghanaian collective agreements are agreed through December 2022. In Peru, our two labor agreements expire in March 2022 and March 2023. In Suriname, the previous labor agreement held with the union for our Merian mine expired in 2021, and negotiations remain on-going. In Timmins, Ontario, we renegotiated a three-year collective bargaining agreement for our Porcupine mine with the United Steelworkers Union which will be in effect through October 2023. In Mexico, the collective bargaining agreement for Peñasquito was renewed in 2020 for two years, and expires in mid-2022. Although we currently have a stable relationship with the workers and the union, a strike in 2013 temporarily stopped the operation of the mine, the possibility of future disruptions in the evolving geopolitical and legal context remains a future risk. Similarly, union activities at the Company’s joint ventures such as NGM in Nevada, could impact financial performance. A failure to successfully enter into new contracts or resolve ongoing union complaints could result in future labor disputes, work stoppages or other disruptions in production that could adversely affect our operations and financial performance. Future disputes at the Company’s operations, projects or joint ventures may not be resolved without disruptions.
We may not be able to operate successfully if we are unable to recruit, hire, retain and develop key personnel and a qualified and diverse workforce. In addition, we are dependent upon our employees being able to perform their jobs in a safe and respectful work environment.
We depend upon the services of a number of key executives and management personnel. Our success is also dependent on the contributions of our highly skilled and experienced workforce. Our ability to achieve our operating goals depends upon our ability to recruit, hire, retain and develop qualified and diverse personnel to execute on our strategy. We are fundamentally committed to creating and maintaining a work environment in which employees are treated fairly, with dignity, decency, respect and in accordance with all applicable laws. We recognize that bullying, sexual harassment and harassment based on other protected categories, including race, have been prevalent in every industry, including the mining industry. Features of the mining industry, such as being a historically hierarchical and male-dominated culture, create risk factors for harmful workplace behavior. While we do not tolerate discrimination and harassment of any kind (including but not limited to sexual, gender identity, race, religion, ethnicity, age, or disability, among others), our policies and processes may not prevent or detect all potential harmful workplace behaviors. We occasionally identify or are apprised of information or allegations that certain employees, affiliates, agents or associated persons may have engaged in harmful behaviors and improper, inappropriate or unlawful conduct, including but not limited to bullying, discrimination and harassment. If the Company fails to maintain a safe, respectful and inclusive work environment, it could impact our ability to retain talent and maintain a diverse workforce and damage the Company’s reputation. There continues to be competition over highly skilled personnel in our industry. If we lose key personnel, or one or more members of our senior management team, and we fail to develop adequate succession plans, or if we fail to hire, retain and develop qualified and diverse employees, our business, financial condition, results of operations and cash flows could be harmed.
Our business is dependent upon our workforce being able to safely perform their jobs, including the potential for physical injuries or illness. If we experience periods where our employees are unable to perform their jobs for any reason, including as a result of illness (such as COVID-19), our operations could be adversely affected. See the risk factor under the heading “Our operations and business have been affected by the COVID-19 pandemic, and may be materially and adversely impacted in the future.” In addition to physical safety, protecting the psychological safety of our employees is necessary to maintaining a safe, respectful and inclusive work environment. If the Company fails to maintain a safe environment that is free of harassment, discrimination or bullying, it could adversely impact employee engagement, performance and productivity, result in potential legal claims and/or damage the Company’s reputation, which could have a material adverse effect on our business, financial position and results of operations or adversely affect the Company’s market value. See also the risk factor under the heading "Damage to our reputation may result in decreased investor confidence, challenges in maintaining positive community relations and can pose additional obstacles to our ability to develop our projects, which may result in a material adverse impact on our business, financial position, results of operations and growth prospects.”
We rely on contractors to conduct a significant portion of our operations and construction projects.
A significant portion of our operations and construction projects are currently conducted in whole or in part by contractors. As a result, our operations are subject to a number of risks, some of which are outside our control, including:
Negotiating agreements with contractors on acceptable terms;
New legislation limiting or altering the ability to utilize contractors or outsourced resources;
The inability to replace a contractor and its operating equipment in the event that either party terminates the agreement;
Reduced control over those aspects of operations which are the responsibility of the contractor;
Failure of a contractor to perform under its agreement;
Interruption of operations or increased costs in the event that a contractor ceases its business due to insolvency or other unforeseen events;
Failure of a contractor to comply with applicable legal and regulatory requirements, to the extent it is responsible for such compliance; and
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Problems of a contractor with managing its workforce, labor unrest or other employment issues;
Liability to third parties as a result of the actions of our contractors.
In addition, law and regulations relating to the use of contractors may vary in the jurisdictions in which we operate, and changes in legal and regulatory restrictions may also impact our ability to utilize contractors and outsourcing services. For example, new mining industry regulations recently came into effect in Ghana, Africa, which require that the supply of specific products and services, and certain roles, be reserved for citizens, which may limit the pool of available contractors and service providers and restrict our ability to utilize certain contractors. The occurrence of one or more of these risks could adversely affect our results of operations and financial position.
Legal Risks
Our business is subject to the U.S. Foreign Corrupt Practices Act and other extraterritorial and domestic anti-bribery laws and regulations, a breach or violation of which could lead to substantial sanctions and civil and criminal prosecution, as well as fines and penalties, litigation, loss of licenses or permits and other collateral consequences and reputational harm.
We operate in certain jurisdictions that have experienced governmental and private sector corruption to some degree, and, in certain circumstances, compliance with anti-bribery laws and heightened expectations of enforcement authorities may be in tension with certain local customs and practices. The U.S. Foreign Corrupt Practices Act and other laws with extraterritorial reach, including the U.K. Bribery Act, and anti-bribery laws in other jurisdictions in which we operate generally prohibit companies and their intermediaries from making improper payments for the purpose of obtaining or retaining business or other commercial advantage. We have a business integrity and compliance program which includes our Code of Conduct, Business Integrity Policy and other policies and standards, all of which mandate compliance with these anti-bribery laws by the Company and its affiliates and their personnel, and also by third parties when they are engaged on our behalf. Our program also includes a well-publicized helpline for raising complaints, questions and concerns as well as processes for evaluating and investigating such concerns and assurances of non-retaliation for persons who raise concerns in good faith. We report regularly to the executive leadership team and the Audit Committee of our Board of Directors on such programs and the results of investigations conducted.
We could be held responsible if our internal control policies and procedures fail to protect us from misinterpretation of or noncompliance with applicable anti-bribery laws, regulations and internal policies, recklessness, fraudulent behavior, dishonesty or other inappropriate acts committed by the our affiliates, employees, agents or associated persons for which we might be claimed to be responsible. As such, our corporate policies and processes may not prevent or detect all potential breaches of law or other governance practices. In addition, the compliance mechanisms and monitoring programs adopted and implemented by Goldcorp prior to our acquisition of Goldcorp in April 2019 may not have adequately prevented or detected possible violations of the U.S. Foreign Corrupt Practices Act and the Corruption of Foreign Officials Act (Canada) attributable to Goldcorp prior to our acquisition of Goldcorp and we may be held liable for any such violations. We occasionally identify or are apprised of information or allegations that certain employees, affiliates, agents or associated persons may have engaged in improper or unlawful conduct for which we might be held responsible. Our policy when receiving credible information or allegations is to conduct internal investigations and compliance reviews to evaluate that information, determine compliance with applicable anti-bribery laws and regulations and company policies and take such remedial steps as may be warranted. In appropriate circumstances, we communicate with authorities in the United States and elsewhere about those investigations and reviews. Violations of these laws, or allegations of such violations, could lead to substantial sanctions and civil and criminal prosecution, as well as fines and penalties, litigation, loss of operating licenses or permits and other collateral consequences, and may damage the Company’s reputation, which could have a material adverse effect on our business, financial position and results of operations or cause the market value of our common shares to decline.
Title to some of our properties may be insufficient, defective, or challenged.
The sufficiency or validity of the Company's rights, titles, or interests in and to its properties ("Legal Title") may be uncertain or challenged by third parties, including governmental authorities, Indigenous or communal peoples, or private parties. For example, at our Conga project in Peru, we continue to seek resolution to a land dispute with local residents. In Mexico, exploration and mining rights are granted through a mining concession, pertaining to the mineral estate, and do not include rights of ownership, possession, or access in or to the corresponding surface estate. Such rights in and to the surface estate are acquired through purchase, lease, or easement from private parties, local communities, or governmental authorities. We enter into temporary occupation agreements ranging from five to 30 years with the Ejido communities, which allow us to use the surface of the lands for our mining operations, and at any particular time we may be involved in negotiations to enter into new temporary occupation agreements or other surface access agreements or amend existing agreements. Failure to reach new agreements or disputes regarding existing agreements may cause, blockades, suspension of operations, delays to projects, and on occasion, may lead to legal disputes.
In addition, certain Australian and Canadian properties are owned by Indigenous peoples or are subject to certain inherent aboriginal rights, treaty rights, and/or asserted rights in and to their traditional territories, and our ability to acquire necessary rights to explore, develop, or mine these properties is dependent on agreements with them. Our ability to secure such agreements may be dependent on formal determinations of Indigenous or Native title rights issued by governmental authorities, the lack or delay of which may impede the Company’s ability to explore, develop, or mine. In French Guiana, Ghana and Suriname, our Legal Title may be subject
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to challenge based on the presence and activities of artisanal miners. See the risk factor under the heading “Illegal mining and artisanal mining occurs on or adjacent to certain of our properties exposing such sites to security risks” below for further information. A determination of insufficient or defective Legal Title or risks in connection with a challenge to our Legal Title could result in loss of Legal Title, litigation, insurance claims, the impairment, preclusion, or cessation of exploration, development, or mining operations, and potential losses affecting the Company's business as a whole.
Risks Related to Our Common Stock
The price of our common stock may be volatile, which may make it difficult for you to resell the common stock when you want or at prices you find attractive.
As a publicly traded company listed on the NYSE and TSX, the market price and volume of our common stock may be subject to significant fluctuations due not only to general stock market conditions but also to a change in sentiment in the market regarding our operations, business prospects or liquidity. Among the factors that could affect the price of our common stock are: (i) changes in gold, and to a lesser extent, silver, copper, zinc or lead prices; (ii) operating and financial performance that vary from the expectations of management, securities analysts and investors or our financial outlook; (iii) developments in our business or in the mining sector generally; (iv) regulatory changes affecting our industry generally or our business and operations; (v) the operating and stock price performance of companies that investors consider to be comparable to us; (vi) announcements of strategic developments, acquisitions and other material events by us or our competitors; (vii) our ability to integrate and operate the companies and the businesses that we acquire; (viii) the perception of the Company’s ESG performance and its ability to deliver on ESG commitments and expectations, including in connection with the Company's climate strategy; (ix) response to activism; and (x) changes in global financial markets and global economies and general market conditions, such as interest or foreign exchange rates, stock, commodity, credit or asset valuations or volatility. The stock markets in general have experienced extreme volatility that has at times been unrelated to the operating performance of particular companies, and the COVID-19 pandemic has increased, and may continue to increase, volatility and pricing in the capital markets. These broad market fluctuations may adversely affect the trading price of our common stock.
Holders of our common stock may not receive dividends.
Holders of our common stock are entitled to receive only such dividends as our Board of Directors may declare out of funds legally available for such payments. We are incorporated in Delaware and governed by the Delaware General Corporation Law. Delaware law allows a corporation to pay dividends only out of surplus, as determined under Delaware law or, if there is no surplus, out of net profits for the fiscal year in which the dividend was declared and for the preceding fiscal year. Under Delaware law, however, we cannot pay dividends out of net profits if, after we pay the dividend, our capital would be less than the capital represented by the outstanding stock of all classes having a preference upon the distribution of assets. Our ability to pay dividends will be subject to our future earnings, capital requirements, financial condition, compliance with covenants and financial ratios related to existing or future indebtedness and other factors deemed relevant by our Board of Directors. Although we have historically declared cash dividends on our common stock, we are not required to declare cash dividends on our common stock. An annualized dividend payout level has not been declared by the Board of Directors, and the declaration and payment of future dividends, including future quarterly dividends, remains at the discretion of the Board of Directors. Our dividend framework is non-binding, and our Board of Directors may modify the dividend framework or reduce, defer or eliminate our common stock dividend in the future.
ITEM 1B.       UNRESOLVED STAFF COMMENTS
None.
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ITEM 2.       PROPERTIES (dollars in millions, except per share, per ounce and per pound amounts)
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Production and Development Properties
Newmont’s properties are described below and unless otherwise noted are in the production stage and are operated by Newmont. All key permits have either been obtained by Newmont or approval is expected to be received in the normal course of business. Operating statistics are presented below in the Operating Statistics section for each region. In addition, Newmont holds investment interests in Canada, Mexico, Chile, Argentina and various other locations.
See Item 1A, Risk Factors, for risks related to our properties.
North America
The North America region maintains its headquarters in Vancouver, Canada and operates five sites, Cripple Creek & Victor (“CC&V”), Musselwhite, Porcupine, Éléonore and Peñasquito. On March 31, 2020, we completed the sale of the Red Lake complex in Ontario, Canada, included as part of the Company’s North America segment, to Evolution Mining Limited (“Evolution”).
Cripple Creek & Victor, Colorado, USA. (100% owned) Cripple Creek & Victor (“CC&V”), located next to the town of Victor, Colorado, is an open pit operation. The CC&V operation comprises seven mining concessions, two state mining leases, three surface parcels, 154 mineral parcels, 1,753 patented mining claims and 13 unpatented lode claims encompassing a total area of 12,985 acres (5,255 hectares). CC&V is an epithermal alkalic deposit with heap leaching and milling processing facilities, which consists of a crushing and grinding circuit, located on site. The available mining fleet consists of two hydraulic shovels, two loaders, and 19 haul trucks, each with a 250-tonne payload. CC&V’s gross property, plant and mine development at December 31, 2021 was $967. CC&V produced 220,000 ounces of gold in 2021 and reported 2.0 million ounces of gold reserves at December 31, 2021.
Musselwhite, Canada. (100% owned) Musselwhite, located approximately 265 miles (430 kilometers) north of Thunder Bay, Ontario, is an underground operation. The Musselwhite operation comprises 929 mining claims and 338 mining leases encompassing an area of 13,366 acres (5,409 hectares) leased from the Government of Ontario. The leases expire between 2025 and 2033. Process facilities include a conventional mill, which consists of a crushing and grinding circuit, carbon-in-pulp and carbon-in-leach plants, elution circuits and an electrowinning plant where the gold is recovered and smelted to produce doré. The conveyor system and the material handling project at Musselwhite reached commercial production in December 2020. The available mining fleet consists of 12 underground loaders and 14 haul trucks, each with a 45-tonne payload. Musselwhite is an iron formation hosted gold deposit. Musselwhite’s gross property, plant and mine development at December 31, 2021 was $1,153. Musselwhite produced 152,000 ounces of gold in 2021 and reported 1.8 million ounces of gold reserves at December 31, 2021.
Porcupine, Canada. (100% owned) Porcupine consists of the Hollinger open pit and Hoyle Pond underground operations, located in the city of Timmins, Ontario, as well as the Borden underground operation, located near the town of Chapleau, Ontario. The Porcupine operation is comprised of 1,129 mining cell claims, 983 mining patents, and 113 mining leases encompassing an area of 340,421 acres (137,763 hectares). Process facilities, located in the city of Timmins, include a conventional mill, which consists of a crushing and grinding circuit, carbon-in-pulp and carbon-in-leach plants, Knelson concentrators, Acacia reactor, elution circuits and an electrowinning plant where the gold is recovered and smelted to produce doré. The available mining fleet consists of two hydraulic shovels, three loaders, 19 underground loaders and 24 haul trucks, with payloads ranging from 30 to 138 tonnes. Mineralization at Hollinger and Hoyle, in Timmins, comprises multiple generations of quartz-carbonate-tourmaline albite veins, associated pyrite alteration envelopes, and disseminated pyrite mineralization. Mineralization at Borden consists of a shear zone containing quartz-vein hosted sulfides within a high-grade metamorphic greenstone package. Porcupine’s gross property, plant and mine development at
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December 31, 2021 was $1,410. Porcupine produced 287,000 ounces of gold in 2021 and reported 2.6 million ounces of gold reserves at December 31, 2021.
Éléonore, Canada. (100% owned) Éléonore, located approximately 510 miles (825 kilometers) north of Montreal in Eeyou Istchee/James Bay in Northern Quebec, is an underground operation encompassing 47,595 acres (19,261 hectares). Process facilities include a conventional mill which consists of a crushing and grinding circuit, flotation circuit, carbon-in-pulp circuits and an electrowinning plant where the gold is recovered and smelted to produce doré. The available fleet consists of 12 underground loaders and 11 haul trucks, each with 45 to 60-tonne payloads. Éléonore is a clastic sediment-hosted stockwork-disseminated gold deposit. Éléonore’s gross property, plant and mine development at December 31, 2021 was $1,052. Éléonore produced 253,000 ounces of gold in 2021 and reported 1.8 million ounces of gold reserves at December 31, 2021.
Peñasquito, Mexico. (100% owned) Peñasquito is an open pit operation located in the northeast corner of Zacatecas State, Mexico, approximately 125 miles (200 kilometers) northeast of the city of Zacatecas and is accessible by paved roads with a private airport close to the site.

The property began production in 2009, with commercial production being achieved in 2010. Goldcorp acquired its ownership in the mine in 2006 when it acquired Glamis and Newmont acquired Peñasquito in 2019 in the Newmont Goldcorp transaction. Peñasquito consists of the Peñasco and Chile Colorado open pit mines. In addition, Peñasquito has one processing plant.
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Peñasquito is comprised of 24 mining concessions encompassing 119,891 acres (48,518 hectares). Concessions were granted for durations of 50 years, and will expire between 2045 and 2060, and a second 50-year term can be granted if the applicant has abided by all appropriate regulations and makes the application within five years prior to the expiration date. In order to maintain these concessions, Peñasquito must pay periodic mining rights and file annual mining reports.
Surface rights in the vicinity of the Peñasco and Chile Colorado open pits are held by three ejidos: Ejido Cedros, Ejido Mazapil and Ejido Cerro Gordo. Peñasquito has signed land use agreements with each ejidos, valid through 2035 and 2036, and the relevant private owners. In August 2020, the Company and Cedros General Assembly ratified the definitive agreement that was reached on April 22, 2020 and resolved all outstanding disputes between Peñasquito and the San Juan de Cedros community (Cedros). In addition, easements have been granted in association with the La Pardita-Cedros Highway and the El Salero-Peñasquito powerline. All necessary permits have been granted.
In July 2007, Goldcorp and Wheaton Precious Metals Corp. (then Silver Wheaton Corp.) entered into a silver streaming agreement. The Company is obligated to sell 25% of silver production from the Peñasquito mine to Wheaton Precious Metals Corporation at the lesser of market price or a fixed contract price, subject to an annual inflation adjustment of up to 1.65%. Refer to Note 5 to the Consolidated Financial Statements for further information.
A 2% net smelter return royalty is owed to Royal Gold Inc. from both the Chile Colorado and Peñasco open pits of the Peñasquito mine. Since January 1, 2014, the Mexican Government levies a 7.5% mining royalty that is imposed on earnings before interest, taxes, depreciation, and amortization. There is also a 0.5% environmental erosion fee payable on precious metal production, based on gross revenues. In December 2016, the State of Zacatecas in Mexico approved new environmental taxes (“Ecological Taxes”) that became effective January 1, 2017. The Ecological Taxes are calculated based on a predetermined formula and the volume of carbon emissions, as well as other environmental variables, at Peñasquito. The Company's payment of the Ecological Taxes primarily relates to the volume of carbon emissions at Peñasquito from fixed and mobile sources.
The mineralization at Peñasquito contains gold, silver, lead and zinc. Deposits currently mined within the Peñasquito operations are considered to be examples of breccia pipes developed as a result of intrusion-related hydrothermal activity.
Process facilities include a sulfide processing plant, comprising four stages of flotation; carbon, lead, zinc and pyrite. The carbon pre-flotation circuit was added in 2018 ahead of lead flotation to remove organic carbon associated with sedimentary ores. In the lead and zinc flotation, the slurry is conditioned with reagents to activate the desired minerals and produce lead and zinc concentrates. The pyrite circuit flotation was added at the end of 2018, which treats the zinc tailings in a pyrite flotation leach, and Merrill Crowe process to recover additional silver and gold in the form of doré. The tailings from the leach circuit undergoes cyanide destruction and combines with final flotation tailings for final deposition in the tailings storage facility.
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The available mining fleet consists of five rope shovels, three hydraulic shovels, three loaders, and 82 haul trucks, each with a 312-tonne payload. The fleet is supported by 9 blast hole production drills, as well as track dozers, rubber tire dozers, excavators, and graders.
Brownfield exploration and development for new reserves is ongoing.
In January 2011, Peñasquito entered into a 20 year power delivery agreement with a subsidiary of InterGen Servicios Mexico (now Saavi Energia) where Peñasquito agreed to purchase electrical power from a gas-fired electricity generating facility located near San Luis de la Paz, Guanajuato, Mexico. The agreement commenced in August 2015. Power is also supplied by the Mexican Electricity Federal Commission (Comision Federal de Electricidad) at its central power grid through the El Salero-Peñasquito powerline.
Peñasquito’s gross property, plant and mine development at December 31, 2021 was $5,868.
Peñasquito produced 686,000 ounces of gold and 1,089,000 gold equivalent ounces of other metals in 2021. As of December 31, 2021 and 2020, Peñasquito reported 6.3 million and 7.1 million ounces of gold reserves, respectively, 394 million ounces and 426 million of silver reserves, respectively, 2,580 million and 2,940 million pounds of lead, respectively, and 6,250 million and 6,810 million pounds of zinc, respectively. The overall reduction in reserves is primarily due to depletion.
As of December 31, 2021 and 2020, Peñasquito reported 2.9 million and 4.3 million ounces of gold resources, respectively, 256 million ounces and 366 million of silver reserves, respectively, 1,710 million and 2,600 million pounds of lead, respectively, and 3,760 million and 5,400 million pounds of zinc, respectively. The overall reduction in resources is primarily due to design updates and removal of uneconomic material.
South America
The South America region maintains its headquarters in Miami, Florida and operates three sites, Yanacocha, Merian and Cerro Negro. We also hold a 40% interest in the Pueblo Viejo Mine, an open pit gold mine located in the Dominican Republic. Barrick operates the Pueblo Viejo Mine and holds the remaining 60% interest.
Yanacocha, Peru. (51.35% owned) Yanacocha is owned by Minera Yanacocha S.R.L. (“Yanacocha” or “MYSRL”), which is 51.35% owned by Newmont. The remaining interest in Yanacocha is held by Compañia Minera Condesa S.A, which is 100% owned by Compañia de Minas Buenaventura S.A.A. (“Buenaventura”) (43.65%) and Summit Global Management II VB (5%), a subsidiary of Sumitomo. Yanacocha is located approximately 375 miles (604 kilometers) north of Lima and 30 miles (48 kilometers) north of the city of Cajamarca and consists of the following open pit mines: the La Quinua Complex, the Yanacocha Complex, the Carachugo Complex and Maqui Maqui.
Yanacocha’s mining activities encompass 243,973 acres (98,732 hectares) that are covered by 160 mining concessions. MYSRL holds the mining rights related to 53,956 acres (21,835 hectares), covered by 50 concessions. Chaupiloma holds the mining rights to the remaining acres and concessions and has assigned these mining concessions to Yanacocha. Each concession has an initial term of 17 to 30 years, which are renewable at Yanacocha’s request for an additional 17 to 20 year term. Yanacocha is an epithermal type deposit of high sulfidation hosted in volcanic rock formations. Gold is associated with iron-oxides and pyrite, which is placed on leach pads. Yanacocha has four leach pads (La Quinua, Yanacocha, Carachugo and Maqui Maqui), three gold processing plants (Pampa Larga, Yanacocha Norte and La Quinua), one limestone processing facility (China Linda) and one mill (Yanacocha Gold Mill). The La Quinua Complex mined material from the La Quinua Sur and the Tapado Oeste Layback and finished mining operations in 2021. The Yanacocha Complex mines material from the Yanacocha Layback and Yanacocha Pinos, which has had limited mining operations in recent years and will finish mining operations in 2022. The Maqui Maqui operations mined material from multiple mines that are no longer in operation. The Yanacocha Gold Mill ceased current operations in February 2021 and has been placed into care and maintenance. It will be repurposed for use as part of the Yanacocha Sulfides project. The Carachugo leach pad processes oxide material from the Quecher Main project. Yanacocha’s available mining fleet consists of two shovels, four excavators, one loader and 31 haul trucks, each with 233-tonne payload. Yanacocha’s gross property, plant and mine development at December 31, 2021 was $5,139. Yanacocha produced 264,000 ounces of gold (135,000 attributable ounces of gold) in 2021 and reported 3.2 million attributable ounces of gold reserves and 780 million attributable pounds of copper reserves at December 31, 2021.
In February 2022, the Company increased its ownership interest to 95% by acquiring Buenaventura’s 43.65% noncontrolling interest in Yanacocha. See Note 1 of the Consolidated Financial Statements for further information.
Brownfield exploration and development for new reserves is ongoing and we continue to evaluate the potential for mining oxide and sulfide gold and copper mineralization.
Merian, Suriname. (75% owned) The Merian gold mine (“Merian”) is owned 75% by Newmont Suriname, LLC (“Newmont Suriname”) (formerly known as Suriname Gold Company LLC and 100% indirectly owned by Newmont Corporation) and 25% by Staatsolie Maatschappij Suriname N.V. (“Staatsolie,” a company wholly owned by the Republic of Suriname). Merian is located in Suriname, approximately 40 miles (66 kilometers) south of the town of Moengo and 19 miles (30 kilometers) north of the Nassau Mountains, close to the French Guiana border. Newmont’s interest in the Merian mine was acquired through a Right of Exploitation as defined in a Mineral Agreement. The Right of Exploitation was registered in November 2014, spans a period of 25 years and covers an
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area of 41,484 acres (16,788 hectares). The operation currently includes the Merian 2 open pit, the Merian 1 open pit and the Maraba open pit. The Merian 1 pit was added in April 2021. All of the gold mineralization at Merian is closely associated with quartz veining within siltstone and sandstone formations. The available mining fleet consists of three shovels, three mining excavators and 36 haul trucks, each with 150-tonne payload. Merian includes processing facilities that utilize a conventional gold mill, primary crusher and processing plant, consisting of a comminution plant, including gravity and cyanide leach processes, with recovery by carbon-in-leach, elution, electrowinning and induction furnace smelting to produce a gold doré product. Merian’s gross property, plant and mine development at December 31, 2021 was $1,180. Merian produced 437,000 ounces of gold (328,000 attributable ounces of gold) in 2021 and reported 4.0 million attributable ounces of gold reserves at December 31, 2021.
Brownfield exploration and development for new reserves is ongoing.
Cerro Negro, Argentina. (100% owned) Cerro Negro is located in southern Argentina about 250 miles (400 kilometers) southwest of the coastal city of Comodoro Rivadavia. The mineral tenure consists of ten mining property titles totaling 53,246 acres (21,548 hectares), and three exploration licenses, covering 13,193 acres (5,339 hectares). We also own significant lands in the Cerro Negro mine area, totaling approximately 27,429 acres (11,100 hectares), which lands overlie the Bajo Negro and Vein Zone deposits and adjacent prospects. Cerro Negro consists of the Eureka, Mariana Central and Mariana Norte operating underground mines and the Emilia and San Marcos underground mines, which are currently in development. Deposits within the Cerro Negro mine operations are low sulfidation, epithermal gold/silver vein deposits. Cerro Negro’s available underground mining fleet consists of 13 underground loaders, 19 underground haul trucks and eight surface haul trucks, each with 30 to 40-tonne payloads and additional auxiliary equipment as required. The processing plant facilities consist of a crushing plant, a grinding circuit, agitated leaching, counter-current decantation, solution clarification, Merril Crowe zinc precipitation and smelting to produce gold/silver doré bars that are shipped to a refinery for further processing. Cerro Negro’s gross property, plant and mine development at December 31, 2021 was $1,858. Cerro Negro produced 270,000 ounces of gold in 2021 and reported 2.6 million ounces of gold reserves at December 31, 2021.
Brownfield exploration and development for new reserves is ongoing, including the development of the Eastern district.
Pueblo Viejo, Dominican Republic. (40% owned) Pueblo Viejo is a joint venture with Barrick, where Barrick is the operator. We report our interest in Pueblo Viejo on an equity method basis. Pueblo Viejo, located approximately 60 miles (100 kilometers) northwest of Santo Domingo, encompasses an area of approximately 12,059 acres (4,880 hectares) consisting of two open pit operations, Moore and Monte Negro. Pueblo Viejo is a high sulfidation, quartz-alunite epithermal gold and silver deposit. Process facilities include a conventional mill which consists of a crushing and grinding circuit, an autoclave, and a carbon-in-leach circuit. Pueblo Viejo produced 325,000 attributable ounces of gold in 2021 and reported 3.6 million ounces of attributable gold reserves at December 31, 2021.
Australia
The Australia region maintains its headquarters in Perth, Australia and operates two sites, Boddington and Tanami.
Aboriginal land rights in Australia, which recognize the traditional rights and customs of Aboriginal people, are governed by the Commonwealth Native Title Act and certain other Acts specific to individual states and territories. The Commonwealth Native Title Act was enacted in 1993 following a decision in the High Court of Australia, which held that Aboriginal people, who have maintained a continuing connection with their land according to their traditional laws and customs, may hold certain rights which should be recognized under Australian common law. In the Northern Territory, where the Tanami operation is located, the Aboriginal Land Rights Act (“ALRA”) was introduced in 1976, which established an Aboriginal Land rights regime. Under the ALRA, approximately 50% of the land in the Northern Territory is Aboriginal freehold land.
All of Newmont’s operations in Australia take place on land that falls under the custodianship of Aboriginal people. Newmont does not consider that native title claims or determined areas where rights have been established are an impediment to the operation of existing mines. Newmont has existing agreements with the traditional owners of the land utilized by our Tanami and Boddington operations. Any future agreements would depend on a determination of native title, which is likely to take many years. If successful, a native title determination could give rights to compensation claims in the future. Throughout Australia, new exploratory and mining tenements may require native title agreements to be entered into and will be subject to a negotiation process, which often gives rise to compensation payments and heritage survey protocols.
In Australia, various ad valorem royalties and taxes are paid to state and territorial governments, typically based on a percentage of gross revenues or earnings. Aboriginal groups have negotiated compensation/royalty payments as a condition to granting access to areas where native title rights are determined or where they own the land.
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Boddington, Australia. (100% owned) Boddington is located 81 miles (130 kilometers) southeast of Perth in Western Australia and is accessible primarily by paved road. Boddington has been wholly owned since June 2009 when Newmont acquired the final 33.33% interest from AngloGold Ashanti Australia Limited.

The Boddington project area comprises 52,506 acres (21,249 hectares) of mining tenure leased from the State of Western Australia, of which 26,910 acres (10,890 hectares) is subleased from the South 32 Worsley Joint Venturers. The total project area is comprised of multiple leases that expire between 2022 and 2041. Royalties are paid to the state government at 2.5% for gold and 5% for copper based on revenue. Shipping and treatment and refining costs are allowable deductions from revenue for royalty calculations for copper. Newmont owns 74,474 acres (30,139 hectares) of rural freehold property, some of which overlaps existing mining tenure.
nem-20211231_g4.jpg
Boddington consists of greenstone diorite hosted mineralization and exploration activities continue to develop the known reserve. The mine operates two pits (North and South Pits), utilizing two electric rope shovels, a diesel powered face shovel and an electric hydraulic shovel as its prime ex-pit material movers with a fleet of 36 production autonomous haulage trucks. Boddington has a current capacity to mine approximately 150,000 to 200,000 tonnes of material per day. The milling plant includes a three-stage crushing facility (two primary crushers, six secondary crushers and four high-pressure grinding rolls), four ball mills, a flotation circuit and a carbon-in-leach circuit. The flotation circuit process recovers gold-copper concentrate before the material is then processed by a traditional carbon-in-leach circuit where the remaining gold is recovered to produce doré. Mining operations consist of two open pit operations located adjacent to each other.
Power for the operation is sourced through the local power grid under a long-term power purchase agreement with Bluewaters Power.
Boddington’s gross property, plant and mine development at December 31, 2021 was $4,607.
Boddington produced 696,000 ounces of gold and 163,000 gold equivalent ounces of other metals in 2021. As of December 31, 2021 and 2020, Boddington reported 11.6 million and 12.7 million ounces of gold reserves, respectively, and 1,290 million and 1,420 million pounds of copper reserves. respectively. The overall reduction in reserves is primarily due to depletion.
As of December 31, 2021 and 2020, Boddington reported 4.8 million and 3.6 million ounces of gold resources, respectively, and 680 million and 540 million pounds of copper resources. respectively. The overall increase in resources is primarily due to the addition of a layback in the North Open Pit.
Brownfield exploration and development for new reserves is ongoing.
Tanami, Australia. (100% owned) Tanami is located in the Northern Territory approximately 342 miles (550 kilometers) northwest of Alice Springs. The underground mining infrastructure and operation is located at Dead Bullock Soak (“DBS”). The processing infrastructure is located 25 miles (40 kilometers) to the east of the mining operations at the Granites. Ore is transported by road train from DBS underground to the processing facility at the Granites. Newmont’s landholdings at Tanami consist of mineral leases and exploration licenses. Additionally, Newmont operates through agreements with the Central Land Council who represent the Warlpiri people. Newmont acquired its ownership in the mine in 2002, as a result of the merger with Normandy Mining Limited (“Normandy”).    
The Newmont Tanami Operations has an area of 1,620,332 acres (655,725 hectares) of exploration licenses (including 677,736 acres (274,270 hectares) relating to the Tobruk and Monza Joint Ventures entered into with Prodigy Gold, for which Newmont is the operator) and 11,025 acres (4,462 hectares) of mineral leases granted pursuant to the Northern Territory Mineral Titles Act. The total project area is comprised of multiple leases and licenses that expire between 2022 and 2036. The operation has been granted authorization via the Northern Territory Mining Management Act to undertake mining activities on these mineral leases.
Tanami consists of sediment hosted sheeted quartz vein mineralization. Tanami, as an underground mining operation, has a fleet of nine underground loaders and 21 haul trucks, each with 60 to 65-tonne payloads. Processing plant facilities currently consist of a crushing plant, a grinding circuit, gravity carbon in pulp tanks and a conventional tailings disposal facility. Tanami’s gross property, plant and mine development at December 31, 2021 was $2,298. Tanami produced 485,000 ounces of gold in 2021 and reported 5.8 million ounces of gold reserves at December 31, 2021.
Brownfield exploration and development for new reserves is ongoing with the main focus being underground ore definition drilling of the Auron, Federation and Liberator ore bodies as well as exploration of the Oberon deposit.
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Africa
The Africa region maintains its headquarters in Accra, Ghana and operates two sites, Ahafo and Akyem.
In December 2003, Ghana’s Parliament unanimously ratified an Investment Agreement (“IA”) between Newmont and the government of Ghana. The IA established a fixed fiscal and legal regime, including fixed royalty and tax rates, for the life of any Newmont project in Ghana. In December 2015, Ghana’s Parliament ratified the Revised Investment Agreements (“Ghana Investment Agreements” or “Revised IAs”). Currently, the maximum corporate income tax rate remains at 32.5% and royalties are paid on a sliding scale system that is based on average monthly gold prices. The rates range from 3% to 5% of revenues (plus an additional 0.6% for any production from forest reserve areas). The government of Ghana is also entitled to receive 10% of a project’s net cash flow after reaching specific production milestones by receiving 1/9th of the total amount paid as dividends to Newmont parent. When the average quoted gold price exceeds $1,300 per ounce within a calendar year, an advance payment on these amounts of 0.6% of total revenues is required. The Ghana Investment Agreements also contain commitments with respect to job training for local Ghanaians, community development, purchasing of local goods and services and environmental protection.
The Ghana Investment Agreements also include a change in tax stabilization from life of mine to 15 years from commercial production for each mine. In October 2017, the government of Ghana approved Newmont’s request to extend the stability period of the Revised IAs at the Ahafo operations for five years to December 31, 2025. The extension was approved based on Newmont’s commitment to invest at least $300 for the Subika Underground and Ahafo Mill Expansion projects. This commitment was completed during the fourth quarter of 2018.
The Ahafo and Akyem mines operate using electrical power generated by the Volta River Authority along with supplemental power generation capacity built by Newmont.
Ahafo, Ghana. (100% owned) Our current Ahafo operation ("Ahafo South") is located near Kenyasi in the Ahafo Region of Ghana, approximately 180 miles (290 kilometers) northwest of the national capital city of Accra, and is largely accessible by paved roads. In 2002, Newmont acquired 50% of Ahafo South as a result of the merger with Normandy. In 2003, Newmont purchased the remaining interest from Moydow Mines International Inc. (“Moydow”), thereby making it a wholly owned subsidiary. The Ahafo South mine commenced commercial production in 2006 and currently operates a mill, two pits and an underground operation. In July 2021, the Board of Directors approved full funding for the Ahafo North project which will expand our existing footprint in Ghana with four open pit mines and a stand-alone mill located approximately 30 kilometers from our current Ahafo South operations.
nem-20211231_g5.jpg
The Ahafo South operations cover an area of approximately 137,000 acres (55,000 hectares) for the mining lease concession with current mine take area of approximately 13,200 acres (5,300 hectares) that has been fully compensated and approximately 10,700 acres (4,300 hectares) of mining area that has not been fully compensated (e.g. payment would be necessary to move people from their land). The Ahafo South mine operates on three mining leases between the Government of Ghana and Newmont Ghana Gold Ltd. The leases grant the exclusive rights to work, develop and produce gold in the lease area, including the processing, storing and transportation of mineral and materials. The leases require Ahafo South to respect or perform certain financial and statutory reporting obligations and expire in 2031 and are renewable subject to certain conditions. Ahafo South pays a royalty of 2% on net smelter returns to Franco-Nevada for all gold ounces recovered from areas previously owned by Moydow and a sliding scale royalty based on the average monthly gold price up to 5% on gold production to the government of Ghana.
The Ahafo South mine is composed of three orogenic gold deposits that have oxide and primary mineralization. Gold occurs primarily in pyrite and secondarily as native gold in quartz veins. Ahafo South has two active open pits, Subika and Awonsu. Subika added an underground operation, which reached commercial production in November 2018, and Awonsu completed a layback in November 2019. The available mining fleet for surface mining consists of three shovels and 36 haul trucks, each with 141-tonne payload. The available mining fleet for underground mining consists of seven underground loaders and 11 haul trucks, with payload ranging from 55 to 60-tonnes. The daily production rate is approximately 95,000 tonnes. The original processing plant was commissioned in 2006. The Ahafo Mill Expansion which was completed in October 2019, expanded the plant capacity to process approximately 11 million tonnes per year. The current processing plant consists of two crushing plants, two grinding circuits, carbon-in-leach circuits, elution circuit, counter current decantation circuit, a tailings disposal facility and an analytical laboratory managed by a third party.
Brownfield exploration and development for new reserves is ongoing.
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Ahafo South’s gross property, plant and mine development at December 31, 2021 was $2,793.
Ahafo South produced 481,000 ounces of gold in 2021. As of December 31, 2021 and 2020, Ahafo South reported 6.1 million and 6.1 million ounces of gold reserves respectively. Reserves remained constant primarily as a result of depletion partially offset by conversion of resources to reserves. As of December 31, 2021 and 2020, Ahafo South reported 5.0 million and 4.2 million ounces of gold resources respectively. The increase to primarily due to the additions of resources through our exploration programs partially offset by depletion.
Akyem, Ghana. (100% owned) Akyem, located in Birim North District of the Eastern Region of Ghana, approximately 80 miles (125 kilometers) northwest of the national capital city of Accra, is an open pit mining operation and covers an area of approximately 16,000 acres (6,000 hectares). Process facilities include a crushing plant, a SAG and ball milling circuit, carbon-in-leach circuit, elution circuit and bullion smelting facilities. The available mining fleet consists of four excavators made up of two front end shovels and two backhoe excavators and nineteen 136-tonne haul trucks. The Akyem mine is an orogenic gold deposit that has oxide and primary mineralization. Akyem’s gross property, plant and mine development at December 31, 2021 was $1,564. Akyem produced 381,000 ounces of gold in 2021 and reported 1.8 million ounces of gold reserves at December 31, 2021.
Nevada
NGM, Nevada, USA. (38.5% owned) NGM, located in Elko, Nevada. On July 1, 2019, Newmont and Barrick consummated the Nevada JV Agreement, which combined the Company’s Nevada mining operations with Barrick’s Nevada mining operations resulting in the establishment of NGM; a joint venture with Barrick who is the operator. NGM operations are primarily accessible by paved road and is comprised of 180,921 acres (73,217 hectares) in aggregate including Cortez 53,999 acres (21,853 hectares), Carlin 58,255 acres (23,575 hectares), Turquoise Ridge 26,679 acres (10,797 hectares), Phoenix 17,900 acres (7,244 hectares), and Long Canyon 24,088 acres (9,748 hectares). Power is either purchased in the open market or supplied by the power plants owned and operated by NGM.
nem-20211231_g6.jpg
All sites at NGM contain open pit operations while Cortez, Carlin, and Turquoise Ridge also include underground operations. At Cortez, mineralization is sedimentary rock-hosted and consists of submicron to micrometer-sized gold particles and gold in solid solution in pyrite. Refractory ore is transported to Carlin for processing. Phoenix is a skarn-hosted polymetallic massive sulfide replacement deposit. The Phoenix mill produces a gravity gold concentrate and a copper/gold flotation concentrate and recovers additional gold from cyanide leaching of the flotation tails. Carlin, Turquoise Ridge, and Long Canyon are a sediment-hosted disseminated gold deposit. Additionally, at Long Canyon, oxide ore with suitable cyanide solubility is treated on a heap leach pad. Gold recovered from the leach pad is transferred as gold-bearing carbon to Carlin for refining and shipment.
In Nevada, mining taxes are assessed on up to 5% of net proceeds of a mine. During 2021, the Nevada legislature enacted a new excise tax which is assessed up to 1.1% of gross revenues.
NGM owns, or controls through long-term mining leases and unpatented mining claims, all of the minerals and surface area within the boundaries of the present Nevada mining operations. The long-term leases extend for at least the anticipated mine life of those deposits. With respect to a significant portion of the Gold Quarry mine at Carlin, NGM pays a net smelter royalty equivalent to 16.2% of the mineral production. NGM wholly-owns or controls the remainder of the Gold Quarry mineral rights, in some cases subject to additional royalties. With respect to certain smaller deposits in Nevada, NGM is obligated to pay royalties on production to third parties that vary from 1% to 8% of production.
Additionally, there is a toll milling agreement with NGM for processing sulfide concentrate produced at CC&V. Under the terms of the agreement, CC&V is required to deliver a minimum of 4,000 tons and a maximum of 8,333 tons of concentrate per month for milling to NGM. CC&V continues to hold title to the concentrate sent to NGM for processing and receives bullion credits for gold recovered and NGM utilizes the concentrate as a fuel source for the NGM roaster. The agreement expires on December 31, 2022.
Each site has its own process facilities which include: an oxide mill, which consists of a crushing and grinding circuit and carbon-in-leach circuit, and two heap leach pads at Cortez; an autoclave, two roasters, an oxide mill/flotation circuit and four heap leach pads at Carlin; the Sage autoclave, an oxide mill, and three heap leach pads at Turquoise Ridge; a flotation mill, a carbon-in-leach plant, a copper leach pad and a solvent extraction electrowinning (“SX/EW”) plant at Phoenix; and a heap leach pad at Long Canyon. NGM has a current capacity across all sites to mine approximately 340,000 tonnes of material per day. The milling facilities were commissioned over a range of years beginning in the 1990’s. They undergo routine maintenance each year with process improvements implemented as the projects are identified and approved.
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The NGM operations include, in aggregate, an open pit mining fleet consisting of 25 shovels and 162 haul trucks with an average payload of 270 tons, and an underground mining fleet consisting of 60 underground loaders and 74 haul trucks, with an average payload of 34 tons.
Newmont’s share of NGM’s gross property, plant and mine development at December 31, 2021 was $7,738.
NGM produced 1.3 million attributable ounces of gold in 2021. As of December 31, 2021 and 2020, NGM reported 19.3 million and 17.4 million attributable ounces of gold reserves, respectively. The increase in reserves is primarily due to the inclusion of Goldrush in 2021. As of December 31, 2021 and 2020, NGM reported 16.2 million and 15.3 million attributable ounces of gold resources, respectively. The increase to resources is primarily due to the additions through our exploration programs.
Brownfield exploration and development for new reserves is ongoing.
Operating Statistics
Operating Statistics, Proven and Probable Reserves and Measured, Indicated and Inferred Resources presented below contain tabular information that is presented in both metric and imperial as follows: (i) metric tonnage is utilized for all metals; (ii) gold and silver grades are presented in grams per tonne; (iii) copper, lead, zinc and molybdenum grades are presented in percentages; and (iv) metal content for gold and silver is presented in ounces while metal content for copper, lead, zinc and molybdenum is presented in pounds. The information that is presented in metric for the periods ended December 31, 2020 and 2019 has been converted from the 2020 10-K, filed with the SEC on February 18, 2021, as this information was previously presented in imperial.
The following tables detail operating statistics related to gold production, ounces sold and production costs per ounce of our continuing operations:
Year Ended December 31, 2021North AmericaSouth America
Australia(4)
AfricaNevadaTotal Gold
Tonnes mined (000 tonnes):
Open pit218,393 101,682 66,308 59,929 121,067 567,379 
Underground3,398 885 2,615 1,533 2,448 10,879 
Tonnes processed (000 tonnes):
Mill43,033 16,437 42,708 18,078 13,690 133,946 
Leach17,607 17,318 — — 17,121 52,046 
Average ore grade (grams/tonne):
Mill1.250 1.441 0.972 1.639 3.272 1.444 
Leach0.455 0.603 — — 0.578 0.545 
Average mill recovery rate84.5 %93.1 %89.5 %90.3 %75.0 %85.3 %
Ounces produced (000):
Mill1,408 715 1,181 862 1,083 5,249 
Leach190 256 — — 189 635 
Consolidated1,598 971 1,181 862 1,272 5,884 
Attributable1,598 733 1,181 862 1,272 5,646 
Consolidated ounces sold (000)1,628 964 1,173 858 1,274 5,897 
Production costs per ounce sold: (1)
Direct mining and production costs$769 $840 $720 $683 $819 $769 
By-product credits(4)(89)(10)(3)(62)(32)
Royalties and production taxes37 88 46 118 47 61 
Write-downs and inventory change(6)(7)(1)(49)(13)
Costs applicable to sales (2)
796 832 755 799 755 785 
Depreciation and amortization363 363 175 307 432 336 
Reclamation accretion34 10 12 
Total production costs$1,167 $1,229 $938 $1,116 $1,193 $1,133 
All-in sustaining costs per ounce sold (2)
$1,016 $1,130 $1,002 $1,022 $918 $1,062 
Year Ended December 31, 2020North AmericaSouth America
Australia(4)
AfricaNevadaTotal Gold
Tonnes mined (000 tonnes):
Open pit183,010 98,010 89,941 66,848 137,220 575,029 
Underground2,772 648 2,731 1,429 2,419 9,999 
Tonnes processed (000 tonnes):
Mill37,907 19,881 43,136 17,740 14,868 133,532 
Leach20,955 15,701 — — 12,435 49,091 
Average ore grade (grams/tonne):
Mill1.281 1.337 0.935 1.672 3.189 1.442 
Leach0.476 0.354 — — 0.576 0.462 
Average mill recovery rate84.5 %89.1 %90.7 %90.0 %74.9 %84.9 %
Ounces produced (000):
Mill1,240 777 1,165 851 1,151 5,184 
Leach217 240 — — 183 640 
Consolidated1,457 1,017 1,165 851 1,334 5,824 
Attributable1,457 736 1,165 851 1,334 5,543 
Consolidated ounces sold (000)1,448 1,034 1,160 853 1,336 5,831 
Production costs per ounce sold: (1)
Direct mining and production costs$736 $725 $698 $663 $800 $731 
By-product credits(4)(51)(8)(2)(44)(22)
Royalties and production taxes39 82 45 103 31 55 
Write-downs and inventory change55 (20)(51)(30)(8)
Costs applicable to sales (2)
773 811 715 713 757 756 
Depreciation and amortization385 358 182 311 434 343 
Reclamation accretion10 34 12 13 
Total production costs$1,168 $1,203 $905 $1,036 $1,197 $1,112 
All-in sustaining costs per ounce sold (2)
$1,049 $1,100 $964 $890 $920 $1,045 
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Year Ended December 31, 2019North AmericaSouth AmericaAustralia AfricaNevadaTotal Gold
Tonnes mined (000 tonnes):
Open pit123,216 93,227 102,540 68,420 139,810 527,213 
Underground2,796 911 3,170 1,217 2,662 10,756 
Tonnes processed (000 tonnes):
Mill19,880 20,328 48,642 14,477 17,891 121,218 
Leach19,502 31,421 — — 14,017 64,940 
Average ore grade (grams/tonne):
Mill1.533 1.835 1.038 2.425 2.728 1.668 
Leach0.438 0.382 — — 0.632 0.453 
Average mill recovery rate81.6 %90.0 %88.8 %92.7 %78.3 %86.1 %
Ounces produced (000):
Mill782 1,087 1,431 1,051 1,229 5,580 
Leach254 298 — — 246 798 
Development (3)
— — — 14 — 14 
Consolidated1,036 1,385 1,431 1,065 1,475 6,392 
Attributable1,036 997 1,431 1,065 1,475 6,004 
Consolidated ounces sold (000)1,080 1,404 1,438 1,051 1,492 6,465 
Production costs per ounce sold: (1)
Direct mining and production costs$858 $606 $693 $525 $765 $691 
By-product credits(4)(34)(6)(2)(19)(14)
Royalties and production taxes22 65 36 88 13 43 
Write-downs and inventory change11 (14)(11)
Costs applicable to sales (2)
883 646 734 597 748 721 
Depreciation and amortization356 234 164 295 340 275 
Reclamation accretion12 23 12 
Total production costs$1,251 $903 $907 $901 $1,094 $1,008 
All-in sustaining costs per ounce sold (2)
$1,187 $814 $908 $791 $935 $966 
____________________________
(1)Production costs do not include items that are included in sustaining costs such as General and administrative; Exploration; Advanced projects, research and development; Other expense, net and Sustaining capital.
(2)Costs applicable to sales per ounce and All-in sustaining costs per ounce are non-GAAP financial measures. See “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis.
(3)Ounces from the removal and production of de minimis saleable materials during development. Related sales are recorded in Other income (loss), net of incremental mining and processing costs.
(4)On January 2, 2020, the Company sold its 50% interest in Kalgoorlie. There were no operating results at Kalgoorlie for the years ended December 31, 2021 and 2020. Refer to Note 10 for additional information.
The following tables detail operating statistics related to co-product metal production and sales:
Year Ended December 31, 2021
Copper (1)
Silver (2)
Lead (2)
Zinc (2)
(pounds)(ounces)(pounds)(pounds)
Tonnes milled (000 tonnes)40,058 35,730 35,730 35,730 
Average milled grade (% tonnes/tonnes) / (grams/tonnes)0.11 %32.42 0.29 %0.77 %
Average mill recovery rate80.7 %91.9 %82.3 %84.0 %
Consolidated pounds (millions) / ounces (thousands) produced71 31,375 177 435 
Consolidated pounds (millions) / ounces (thousands) sold69 32,237 173 433 
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Year Ended December 31, 2020
Copper (1)
Silver (2)
Lead (2)
Zinc (2)
(pounds)(ounces)(pounds)(pounds)
Tonnes milled (000 tonnes)40,457 30,590 30,590 30,590 
Average milled grade (% tonnes/tonnes) / (grams/tonnes)0.08 %34.57 0.35 %0.80 %
Average mill recovery rate80.2 %90.8 %80.1 %84.1 %
Consolidated pounds (millions) / ounces (thousands) produced56 27,801 179 381 
Consolidated pounds (millions) / ounces (thousands) sold56 28,596 185 407 
Year Ended December 31, 2019
CopperSilverLeadZinc
AustraliaNevadaTotal
Total (2)
Total (2)
Total (2)
(pounds)(pounds)(pounds)(ounces)(pounds)(pounds)
Tonnes milled (000 tonnes)39,811 4,669 44,480 13,642 13,642 13,642 
Average milled grade (% tonnes/tonnes) / (grams/tonnes)0.10 %0.09 %0.10 %45.36 0.48 %0.86 %
Average mill recovery rate80.3 %59.7 %78.2 %87.8 %78.8 %84.1 %
Tonnes leached (000 tonnes)— 3,696 3,696 — — — 
Average leached grade— 0.25 %0.25 %— — — 
Consolidated pounds (millions) produced64 15 79 15,860 108 187 
Consolidated pounds (millions) sold63 17 80 15,987 108 179 
____________________________
(1)All of our 2021 and 2020 copper co-product production came from Australia, specifically the Boddington Mine.
(2)All of our 2021, 2020 and 2019 silver, lead and zinc co-product production came from North America, specifically the Peñasquito Mine.
The following tables detail operating statistics related to co-product metal production costs per gold equivalent ounce (“GEO”) sold. Gold equivalent ounces are calculated as pounds or ounces produced multiplied by the ratio of the other metals’ price to the gold price, using the metal prices in the table below:
GoldCopperSilverLeadZinc
(ounce)(pound)(ounce)(pound)(pound)
2021 GEO Price$1,200 $2.75 $22.00 $0.90 $1.05 
2020 GEO Price$1,200 $2.75 $16.00 $0.95 $1.20 
2019 GEO Price$1,200 $2.75 $15.00 $0.90 $1.05 
Year Ended December 31, 2021
North America
Australia(4)
Total / Weighted-Average
Production costs per GEO sold: (1)
Costs applicable to sales (2)
$603 $902 $640 
Depreciation and amortization291 147 273 
Reclamation and remediation11 
Total production costs per GEO sold (3)
$899 $1,060 $919 
All-in sustaining costs per GEO sold (2)
$826 $1,112 $900 
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Year Ended December 31, 2020
North America
Australia(4)
Total / Weighted-Average
Production costs per GEO sold: (1)
Costs applicable to sales (2)
$535 $837 $571 
Depreciation and amortization302 152 284 
Reclamation and remediation11 
Total production costs per GEO sold (3)
$845 $1,000 $864 
All-in sustaining costs per GEO sold (2)
$828 $1,080 $858 
Year Ended December 31, 2019
North AmericaAustraliaNevadaTotal / Weighted-Average
Production costs per GEO sold: (1)
Costs applicable to sales (2)
$886 $803 $750 $858 
Depreciation and amortization342 151 243 291 
Reclamation and remediation16 11 14 14 
Total production costs per GEO sold (3)
$1,243 $965 $1,007 $1,164 
All-in sustaining costs per GEO sold (2)
$1,339 $954 $894 $1,222 
____________________________
(1)Production costs do not include items that are included in sustaining costs such as General and administrative; Exploration; Advanced projects, research and development; Other expense, net and sustaining capital.
(2)Costs applicable to sales per GEO and All-in sustaining costs per GEO are non-GAAP financial measures. See “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis.
(3)May not recalculate due to rounding.
(4)On January 2, 2020, the Company sold its 50% interest in Kalgoorlie. There were no operating results at Kalgoorlie for the years ended December 31, 2021 and 2020. Refer to Note 10 for additional information.
Proven and Probable Reserves
All of our reserves are located on land (i) we own or control, or (ii) that is owned or controlled by business entities established with our joint venture partners, in which the Company owns its pro-rata share of the capital stock, membership units, or interests. The risks that could affect title to our property are included above in Part I, Item 1A, Risk Factors.
A “mineral reserve” is an estimate of tonnage and grade or quality of indicated and measured mineral resources that, in the opinion of the qualified person, can be the basis of an economically viable project. More specifically, it is the economically mineable part of a measured or indicated mineral resource, which includes diluting materials and allowances for losses that may occur when the material is mined or extracted. The term “economically viable,” as used in the definition of reserve, means that the qualified person has analytically determined that extraction of the mineral reserve is economically viable under reasonable investment and market assumptions.
The term “proven reserves” means the economically mineable part of a measured mineral resource and can only result from conversion of a measured mineral resource. The term “probable reserves” means reserves for which quantity and grade are computed from information similar to that used for proven reserves, but the sites for sampling are farther apart or are otherwise less closely spaced. The degree of assurance, although lower than that for proven reserves, is high enough to assume continuity between points of observation. Proven and probable reserves include gold, copper, silver, lead, zinc or molybdenum attributable to Newmont’s ownership or economic interest.
Proven and probable reserves are based on extensive drilling, sampling, mine modeling and metallurgical testing from which we determined economic feasibility. The reference point for mineral reserves is the point of delivery to the process plant. Metal price assumptions, adjusted for our exchange rate assumption, are based on considering such factors as market forecasts, industry consensus and management estimates. The price sensitivity of reserves depends upon several factors including grade, metallurgical recovery, operating cost, waste-to-ore ratio and ore type. Metallurgical recovery rates vary depending on the metallurgical properties of each deposit and the production process used. The reserve tables below list the average metallurgical recovery rate for each deposit, which takes into account the relevant processing methods. The cut-off grade, or lowest grade of mineralization considered economic to process, varies between deposits depending upon prevailing economic conditions, mineability of the deposit, by-products, amenability of the ore to gold, copper, silver, lead, zinc or molybdenum extraction and type of milling or leaching facilities available. Reserve
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estimates may have non-material differences in comparison to our Joint Venture partners due to differences in classification and rounding methodology.
The proven and probable reserve figures presented herein are estimates based on information available at the time of calculation. No assurance can be given that the indicated levels of recovery of gold, copper, silver, lead, zinc and molybdenum will be realized. Ounces of gold or silver or pounds of copper, lead, zinc or molybdenum included in the proven and probable reserves are those contained prior to losses during metallurgical treatment. Reserve estimates may require revision based on actual production. Market fluctuations in the price of gold, copper, silver, lead, zinc and molybdenum, as well as increased production costs or reduced metallurgical recovery rates, could render certain proven and probable reserves containing higher cost reserves uneconomic to exploit and might result in a reduction of reserves.
We had attributable proven and probable gold reserves of 92.8 million ounces at December 31, 2021. For 2021 and 2020, reserves were estimated at a gold price assumption of $1,200 per ounce. We estimate our 2021 reserves would increase by 6% (5.7 million ounces), or decline by 8% (7.5 million ounces), if estimated at a $1,300 and $1,100 per ounce gold price, respectively, with all other assumptions remaining constant.
We publish reserves annually, and will recalculate reserves at December 31, 2022, taking into account metal prices, changes, if any, to future production and capital costs, divestments and depletion as well as any acquisitions and additions during 2022.
Proven and probable reserves disclosed at December 31, 2021 have been prepared in accordance with the new Regulation S-K 1300 requirements of the SEC; whereas proven and probable reserves disclosed at December 31, 2020 have been prepared in accordance with the SEC’s Industry Guide 7 ("IG7"). Our historical methodology applied to the prior year of estimating reserves was not significantly impacted as a result of the change from IG7 to S-K 1300, therefore we believe the amounts presented at December 31, 2021 and 2020, under the respective methodologies, are comparable.
The Company has internal controls for reviewing and documenting the information supporting the mineral reserve and mineral resource estimates, describing the methods used, and ensuring the validity of the estimates. These internal control processes were not materially impacted by the adoption of S-K 1300. Information that is utilized to compile mineral reserves and resources is prepared and certified by appropriately qualified persons at the mine site level and is subject to our internal review process which includes review by the Newmont-designated region and the Qualified Person (“QP”) based in our corporate office in Denver, Colorado. Additionally, all material sites are audited every other year and the non-material sites on a three-year cycle completed by subject matter experts for compliance to internal standards and guidelines as well as regulatory requirements. The QP presents the mineral reserve and mineral resource information to the Audit Committee and the Disclosure Committee on an annual basis for further review.
The following tables detail gold proven and probable reserves reflecting only those reserves attributable to Newmont’s ownership or economic interest at December 31, 2021 and 2020:
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Gold Reserves at December 31, 2021 (1)(28)
Proven ReservesProbable ReservesProven and Probable Reserves
Deposits/DistrictsNewmont
Share
Tonnage (2)
(000 tonnes)
Grade
(g/tonne)
Ounces (3)
(000)
Tonnage (2)
(x1000 tonnes)
Grade
(g/tonne)
Ounces (3)
(000)
Tonnage (2)
(000 tonnes)
Grade
(g/tonne)
Ounces (3)
(000)
Metallurgical
Recovery (3)
North America
CC&V Open Pits (4)
100%70,700 0.441,000 15,400 0.37180 86,100 0.431,180 60%
CC&V Leach Pads (4)(5)
100%— — 31,200 0.81810 31,200 0.81810 57%
Total CC&V, Colorado70,700 0.441,000 46,600 0.66990 117,300 0.531,990 59%
Musselwhite, Canada (6)
100%2,800 5.07460 6,700 6.071,310 9,500 5.771,770 96%
Porcupine Underground (7)
100%2,300 7.24530 900 7.97240 3,200 7.46770 92%
Porcupine Open Pit (8)
100%5,900 1.60310 33,700 1.411,520 39,600 1.441,830 94%
Total Porcupine, Canada8,200 3.19840 34,600 1.581,760 42,800 1.892,600 93%
Éléonore, Canada (9)
100%2,200 5.03350 9,000 5.061,470 11,200 5.051,820 91%
Peñasquito Open Pits
100%107,200 0.622,140 219,100 0.563,910 326,300 0.586,050 69%
Peñasquito Stockpiles (10)
100%7,800 0.43110 27,900 0.19170 35,700 0.24280 69%
Total Peñasquito, Mexico (11)
115,000 0.612,250 247,000 0.514,080 362,000 0.546,330 69%
198,900 0.774,900 343,900 0.879,610 542,800 0.8314,510 78%
South America
Yanacocha Open Pits (12)
51.35%16,500 0.66350 68,200 0.681,490 84,700 0.681,840 57%
Yanacocha Underground (13)
51.35%— — 7,000 6.201,390 7,000 6.201,390 97%
Total Yanacocha, Peru (27)
16,500 0.66350 75,200 1.192,880 91,700 1.103,230 74%
Merian, Suriname (14)
75%47,100 1.362,050 54,500 1.111,950 101,600 1.224,000 93%
Cerro Negro, Argentina (15)
100%1,800 8.93500 7,200 8.882,060 9,000 8.892,560 94%
Pueblo Viejo Open Pits40%5,000 2.20350 8,200 2.33620 13,200 2.28970 89%
Pueblo Viejo Stockpiles (10)
40%— — 37,400 2.202,640 37,400 2.202,640 89%
Total Pueblo Viejo, Dominican Republic (16)
5,000 2.20350 45,600 2.223,260 50,600 2.223,610 89%
NuevaUnión, Chile (17)(26)
50%— — 341,100 0.475,110 341,100 0.475,110 66%
Norte Abierto, Chile (18)(26)
50%— — 598,800 0.6011,620 598,800 0.6011,620 74%
70,400 1.443,250 1,122,400 0.7526,880 1,192,800 0.7930,130 78%
Australia
Boddington Open Pit
100%237,400 0.705,360 239,100 0.665,080 476,500 0.6810,440 86%
Boddington Stockpiles (10)
100%2,700 0.6860 79,100 0.431,090 81,800 0.441,150 79%
Total Boddington, Western Australia (19)
240,100 0.705,420 318,200 0.606,170 558,300 0.6511,590 85%
Tanami, Northern Territory (20)
100%12,700 4.972,040 22,100 5.253,740 34,800 5.155,780 98%
252,800 0.927,460 340,300 0.919,910 593,100 0.9117,370 89%
Africa
Ahafo South Open Pits (21)
100%11,8002.3589039,7001.672,14051,5001.833,03095%
Ahafo South Underground (22)
100%9,4003.761,14012,7002.681,10022,1003.142,24094%
Ahafo South Stockpiles (10)
100%28,3000.9283028,3000.9283089%
Total Ahafo South, Ghana49,5001.802,86052,4001.923,240101,9001.866,10094%
Ahafo North, Ghana (23)
100%46,3002.403,57046,3002.403,57091%
Akyem Open Pit (24)
100%15,8001.6181010,9001.8966026,7001.721,47092%
Akyem Stockpiles (10)
100%13,9000.7835013,9000.7835091%
Total Akyem, Ghana29,7001.221,16010,9001.8966040,6001.401,82091%
79,2001.584,020109,6002.127,470188,8001.8911,49092%
Nevada
NGM Open Pits38.5 %10,0001.86600119,5001.214,650129,5001.265,25070%
NGM Stockpiles (10)
38.5 %14,3002.0394014,9002.621,25029,2002.332,19068%
NGM Underground38.5 %13,6009.954,34028,0008.397,56041,6008.9011,90088%
Total NGM, Nevada (25)
37,9004.825,880162,4002.5813,460200,3003.0019,34081%
Total Gold639,2001.2425,5102,078,6001.0167,3302,717,8001.0692,84081%
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Gold Reserves at December 31, 2020 (1)
Proven ReservesProbable ReservesProven and Probable Reserves
Deposits/DistrictsNewmont
Share
Tonnage (2)
(000 tonnes)
Grade
(g/tonne)
Ounces (3)
(000)
Tonnage (2)
(x1000 tonnes)
Grade
(g/tonne)
Ounces (3)
(000)
Tonnage (2)
(000 tonnes)
Grade
(g/tonne)
Ounces (3)
(000)
Metallurgical
Recovery (3)
North America
CC&V Open Pits (4)
100%85,300 0.501,370 19,900 0.38240 105,200 0.481,610 62%
CC&V Leach Pads (4)(5)
100%— — 33,000 0.82880 33,000 0.82880 57%
Total CC&V, Colorado85,300 0.501,370 52,900 0.661,120 138,200 0.562,490 61%
Musselwhite, Canada (6)
100%1,900 6.24380 7,000 6.251,410 8,900 6.251,790 95%
Porcupine Underground (7)
100%2,200 7.86550 2,800 6.14550 5,000 6.901,100 91%
Porcupine Open Pit (8)
100%8,200 1.53410 34,100 1.401,540 42,300 1.431,950 94%
Total Porcupine, Canada10,400 2.87960 36,900 1.762,090 47,300 2.013,050 93%
Éléonore, Canada (9)
100%1,400 5.75260 6,400 4.841,000 7,800 5.001,260 93%
Peñasquito Open Pits
100%100,100 0.642,060 248,100 0.584,620 348,200 0.606,680 71%
Peñasquito Stockpiles (10)
100%11,800 0.65250 27,800 0.19170 39,600 0.33420 53%
Total Peñasquito, Mexico (11)
111,900 0.642,310 275,900 0.544,790 387,800 0.577,100 70%
210,900 0.785,280 379,100 0.85 10,410 590,000 0.8315,690 78%
South America
Yanacocha Open Pits (12)
51.35%5,800 0.64120 89,300 0.661,900 95,100 0.662,020 60%
Yanacocha Underground (13)
51.35%— — 7,000 6.201,390 7,000 6.201,390 97%
Total Yanacocha, Peru5,800 0.64120 96,300 1.063,290 102,100 1.043,410 75%
Merian, Suriname (14)
75%50,100 1.302,100 57,400 1.011,870 107,500 1.153,970 93%
Cerro Negro, Argentina (15)
100%2,400 8.35630 6,600 9.101,940 9,000 8.902,570 91%
Pueblo Viejo Open Pits40%9,500 2.41730 10,100 2.27740 19,600 2.341,470 91%
Pueblo Viejo Stockpiles (10)
40%— — 35,800 2.302,640 35,800 2.302,640 89%
Total Pueblo Viejo, Dominican Republic (16)
9,500 2.41730 45,900 2.293,380 55,400 2.314,110 90%
NuevaUnión, Chile (17)(26)
50%— — 341,100 0.475,110 341,100 0.475,110 66%
Norte Abierto, Chile (18)(26)
50%— — 598,800 0.6011,620 598,800 0.6011,620 74%
67,800 1.653,580 1,146,100 0.7427,210 1,213,900 0.7930,790 79%
Australia
Boddington Open Pit
100%247,100 0.685,430 287,600 0.666,060 534,700 0.6711,490 85%
Boddington Stockpiles (10)
100%1,600 0.7940 84,800 0.431,160 86,400 0.431,200 78%
Total Boddington, Western Australia (19)
248,700 0.695,470 372,400 0.607,220 621,100 0.6412,690 85%
Tanami, Northern Territory (20)
100%14,600 4.892,290 21,600 5.153,580 36,200 5.055,870 98%
263,300 0.927,760 394,000 0.8510,800 657,300 0.8818,560 89%
Africa
Ahafo South Open Pits (21)
100%11,900 2.41910 38,100 1.752,140 50,000 1.903,050 90%
Ahafo South Underground (22)
100%7,500 3.91950 9,600 3.23990 17,100 3.531,940 94%
Ahafo South Stockpiles (10)
100%36,200 0.921,070 — — 36,200 0.921,070 88%
Total Ahafo South, Ghana55,600 1.642,930 47,700 2.043,130 103,300 1.826,060 91%
Ahafo North, Ghana (23)
100%— — 45,100 2.403,480 45,100 2.403,480 91%
Akyem Open Pit (24)
100%17,100 1.67920 17,100 1.73950 34,200 1.701,870 91%
Akyem Stockpiles (10)
100%15,100 0.82400 — — 15,100 0.82400 90%
Total Akyem, Ghana32,200 1.271,320 17,100 1.73950 49,300 1.432,270 90%
87,800 1.514,250 109,900 2.147,560 197,700 1.8611,810 91%
Nevada
NGM Open Pits38.5%10,500 1.68570 123,800 1.224,870 134,300 1.265,440 70%
NGM Stockpiles (10)
38.5%33,300 2.362,530 — — 33,300 2.362,530 71%
NGM Underground38.5%15,200 10.074,930 14,500 9.614,490 29,700 9.859,420 88%
Total NGM, Nevada (25)
59,000 4.238,030 138,300 2.119,360 197,300 2.7417,390 80%
Total Gold688,800 1.3128,900 2,167,400 0.9465,340 2,856,200 1.0394,240 82%
____________________________
(1)Gold reserves, at sites in which Newmont is the operator, for 2021 and 2020 were estimated at a gold price of $1,200 per ounce unless otherwise noted. Reserves provided by other operators may use pricing that differs.
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(2)Tonnages include allowances for losses resulting from mining methods. Tonnages are rounded to the nearest 100,000.
(3)Ounces are estimates of metal contained in ore tonnages and do not include allowances for processing losses. Metallurgical recovery rates represent the estimated amount of metal to be recovered through metallurgical extraction processes. Ounces may not recalculate as they are rounded to the nearest 10,000.
(4)Cut-off grades utilized in 2021 reserves were as follows: oxide mill material not less than 1.32 gram per tonne and leach material not less than 0.10 gram per tonne.
(5)Leach pad material is the material on leach pads at the end of the year from which gold remains to be recovered. In-process reserves are reported separately where ounces exceed 100,000 and are greater than 5% of the total site-reported reserves.
(6)Cut-off grade utilized in 2021 reserves not less than 3.10 gram per tonne.
(7)Cut-off grade utilized in 2021 reserves not less than 4.00 gram per tonne.
(8)Cut-off grade utilized in 2021 reserves not less than 0.44 gram per tonne.
(9)Cut-off grade utilized in 2021 reserves not less than 4.30 gram per tonne.
(10)Stockpiles are comprised primarily of material that has been set aside to allow processing of higher grade material in the mills. Stockpiles increase or decrease depending on current mine plans. Stockpile reserves are reported separately where ounces exceed 100,000 and are greater than 5% of the total site-reported reserves.
(11)Gold cut-off grade varies with level of silver, lead and zinc credits.
(12)Gold cut-off grades utilized in 2021 reserves were as follows: oxide leach material not less than 0.07 gram per tonne and refractory mill material not less than 1.45 gram per tonne.
(13)Gold cut-off grades utilized in 2021 were as follows: oxide mill material not less than 2.10 gram per tonne and refractory mill material varies with level of copper and silver credits.
(14)Cut-off grade utilized in 2021 reserves not less than 0.33 gram per tonne.
(15)Cut-off grade utilized in 2021 reserves not less than 5.00 gram per tonne.
(16)The Pueblo Viejo mine, which is 40% owned by Newmont, is accounted for as an equity method investment. Reserve estimates provided by Barrick, the operator of Pueblo Viejo.
(17)Project is currently undeveloped. Reserve estimates provided by the NuevaUnión joint venture.
(18)Project is currently undeveloped. Reserve estimates provided by the Norte Abierto joint venture.
(19)Gold cut-off grade varies with level of copper credits.
(20)Cut-off grade utilized in 2021 reserves not less than 2.20 gram per tonne.
(21)Cut-off grade utilized in 2021 reserves not less than 0.46 gram per tonne.
(22)Cut-off grade utilized in 2021 reserves not less than 2.40 gram per tonne.
(23)Cut-off grade utilized in 2021 reserves not less than 0.57 gram per tonne.
(24)Cut-off grade utilized in 2021 reserves not less than 0.56 gram per tonne.
(25)Reserve estimates provided by Barrick, the operator of the NGM joint venture.
(26)Currently included in Corporate and Other in Note 4 of the Consolidated Financial Statements.
(27)In February 2022, the Company increased its ownership interest in Yanacocha to 95% by acquiring Buenaventura’s 43.65% noncontrolling interest. See Note 1 of the Consolidated Financial Statements for further information.
(28)Amounts presented herein have been rounded to the nearest 10,000 for ounces and 100,000 for tonnes and therefore may not agree to the respective Technical Report Summaries provided for certain properties as provided under exhibit 96.


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The following tables detail copper proven and probable reserves reflecting only those reserves attributable to Newmont’s ownership or economic interest at December 31, 2021 and 2020:
Copper Reserves at December 31, 2021 (1)(12)
Proven ReservesProbable ReservesProven and Probable Reserves
Deposits/DistrictsNewmont
Share
Tonnage (2)
(000 tonnes)
Grade
(Cu %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Cu %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Cu %)
Pounds (3)
(millions)
Metallurgical
Recovery (3)
South America
Yanacocha Open Pits and Underground, Peru (4)
51.35%— — 57,700 0.61%780 57,700 0.61%780 84%
NuevaUnión, Chile (5)(6)
50%— — 1,118,000 0.40%9,800 1,118,000 0.40%9,800 88%
Norte Abierto, Chile (6)(7)
50%— — 598,800 0.22%2,890 598,800 0.22%2,890 87%
  1,774,500 0.34%13,470 1,774,500 0.34%13,470 87%
Australia
Boddington Open Pit, Western Australia (8)
100%237,400 0.10%540 239,100 0.11%590 476,500 0.11%1,130 82%
Boddington Stockpiles, Western Australia (9)
100%2,600 0.09%10 79,100 0.09%150 81,700 0.09%160 77%
240,000 0.10%550 318,200 0.11%740 558,200 0.11%1,290 82%
Nevada
NGM, Nevada (10)
38.5%6,900 0.17%30 80,200 0.17%300 87,100 0.17%330 65%
6,900 0.17%30 80,200 0.17%300 87,100 0.17%330 65%
Total Copper 246,900 0.11%580 2,172,900 0.30%14,510 2,419,800 0.28%15,090 87%

Copper Reserves at December 31, 2020 (1)
Proven ReservesProbable ReservesProven and Probable Reserves
Deposits/DistrictsNewmont
Share
Tonnage (2)
(000 tonnes)
Grade
(Cu %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Cu %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Cu %)
Pounds (3)
(millions)
Metallurgical
Recovery (3)
South America
Yanacocha Open Pits and Underground, Peru (4)(11)
51.35%— — 57,700 0.62%790 57,700 0.62%790 83%
NuevaUnión, Chile (5)(6)
50%— — 1,118,000 0.40%9,800 1,118,000 0.40%9,800 88%
Norte Abierto, Chile (6)(7)
50%— — 598,800 0.22%2,890 598,800 0.22%2,890 87%
  1,774,500 0.34%13,480 1,774,500 0.34%13,480 87%
Australia
Boddington Open Pit, Western Australia (8)
100%247,100 0.10%540 287,600 0.11%720 534,700 0.11%1,260 82%
Boddington Stockpiles, Western Australia (9)
100%1,600 0.10%— 84,800 0.09%160 86,400 0.09%160 75%
248,700 0.10%540 372,400 0.11%880 621,100 0.10%1,420 81%
Nevada
NGM, Nevada (10)
38.5%14,100 0.20%60 68,500 0.17%260 82,600 0.18%320 64%
14,100 0.20%60 68,500 0.17%260 82,600 0.18%320 64%
Total Copper262,800 0.10%600 2,215,400 0.30%14,620 2,478,200 0.28%15,220 86%
____________________________
(1)Copper reserves, at sites in which Newmont is the operator, for 2021 and 2020 were estimated at a copper price of $2.75 per pound. Reserves provided by other operators may use pricing that differs.
(2)See footnote (2) to the Gold Proven and Probable Reserves tables above. Tonnages are rounded to nearest 100,000.
(3)Pounds are estimates of metal contained in ore tonnages and do not include allowances for processing losses. Metallurgical recovery rates represent the estimated amount of metal to be recovered through metallurgical extraction processes. Pounds may not recalculate as they are rounded to the nearest 10 million.
(4)Reserve estimates relate to the undeveloped Yanacocha Sulfides project. Copper cut-off grade varies with level of gold and silver credits.
(5)Project is currently undeveloped. Reserve estimates provided by the NuevaUnión joint venture.
(6)Currently included in Corporate and Other in Note 4 of the Consolidated Financial Statements.
(7)Project is currently undeveloped. Reserve estimates provided by the Norte Abierto joint venture.
(8)Copper cut-off grade varies with level of gold credits.
(9)Stockpiles are comprised primarily of material that has been set aside to allow processing of higher grade material in the mills. Stockpiles increase or decrease depending on current mine plans. Stockpiles are reported separately where pounds exceed 100 million and are greater than 5% of the total site reported reserves.
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(10)Reserve estimates provided by Barrick, the operator of the NGM joint venture.
(11)In February 2022, the Company increased its ownership interest in Yanacocha to 95% by acquiring Buenaventura’s 43.65% noncontrolling interest. See Note 1 of the Consolidated Financial Statements for further information.
(12)Amounts presented herein have been rounded to the nearest 10 million for pounds and 100,000 for tonnes and therefore may not agree to the respective Technical Report Summaries provided for certain properties as provided under exhibit 96.
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The following tables detail silver proven and probable reserves reflecting only those reserves attributable to Newmont’s ownership or economic interest at December 31, 2021 and 2020:
Silver Reserves at December 31, 2021 (1)(15)
Proven ReservesProbable ReservesProven and Probable Reserves
Deposits/DistrictsNewmont
Share
Tonnage (2)
(000 tonnes)
Grade
(g/tonne)
Ounces (3)
(000)
Tonnage (2)
(000 tonnes)
Grade
(g/tonne)
Ounces (3)
(000)
Tonnage (2)
(000 tonnes)
Grade
(g/tonne)
Ounces (3)
(000)
Metallurgical
Recovery (3)
North America
Peñasquito Open Pits, Mexico(4)
100%107,200 38.79133,650 219,100 32.75230,760 326,300 34.73364,410 87%
Peñasquito Stockpiles, Mexico(5)
100%7,800 31.107,810 27,900 24.1521,670 35,700 25.6729,480 87%
115,000 38.26141,460 247,000 31.78252,430 362,000 33.84393,890 87%
South America
Yanacocha Open Pits and Underground, Peru(6)
51.35%1,200 7.57280 48,900 19.0830,000 50,100 18.8030,280 55%
Yanacocha Stockpiles, Peru(5)
51.35%1,400 31.481,450 — — 1,400 31.481,450 75%
Yanacocha Leach Pads, Peru(7)
51.35%— — 47,300 8.1612,400 47,300 8.1612,400 5%
Total Yanacocha, Peru (14)
2,600 20.811,730 96,200 13.8542,400 98,800 13.8544,130 42%
Cerro Negro, Argentina(8)
100%1,700 71.264,010 7,200 54.1612,540 8,900 57.5116,550 76%
Pueblo Viejo, Dominican Republic(9)
40%5,000 11.181,790 45,600 14.8521,790 50,600 14.4923,580 77%
NuevaUnión, Chile(10)(11)
50%— — 1,118,000 1.3147,170 1,118,000 1.3147,170 66%
Norte Abierto, Chile(11)(12)
50%— — 598,800 1.5229,340 598,800 1.5229,340 74%
9,300 25.147,530 1,865,800 2.56153,240 1,875,100 2.67160,770 63%
Nevada
NGM, Nevada(13)
38.5%5,200 7.401,230 60,000 6.3512,250 65,200 6.4313,480 38%
5,200 7.401,230 60,000 6.3512,250 65,200 6.4313,480 38%
Total Silver 129,500 36.08150,220 2,172,800 5.98417,920 2,302,300 7.68568,140 74%
Silver Reserves at December 31, 2020 (1)
Proven ReservesProbable ReservesProven and Probable Reserves
Deposits/DistrictsNewmont
Share
Tonnage (2)
(000 tonnes)
Grade
(g/tonne)
Ounces (3)
(000)
Tonnage (2)
(000 tonnes)
Grade
(g/tonne)
Ounces (3)
(000)
Tonnage (2)
(000 tonnes)
Grade
(g/tonne)
Ounces (3)
(000)
Metallurgical
Recovery (3)
North America
Peñasquito Open Pits, Mexico
100%100,100 38.74124,690 248,100 33.63268,200 348,200 35.10392,890 88%
Peñasquito Stockpiles, Mexico(5)
100%11,800 30.0311,400 27,800 24.0121,460 39,600 25.8132,860 82%
111,900 37.82136,090 275,900 32.66289,660 387,800 34.15425,750 88%
South America
Yanacocha Open Pits and Underground, Peru
51.35%2,800 8.89810 52,900 18.2931,100 55,700 17.8231,910 53%
Yanacocha Stockpiles, Peru(5)
51.35%1,400 36.811,670 1,300 35.141,450 2,700 36.023,120 73%
Yanacocha Leach Pads, Peru(7)
51.35%— — 55,400 8.1814,560 55,400 8.1814,560 5%
Total Yanacocha, Peru4,200 18.192,480 109,600 13.8547,110 113,800 13.8549,590 40%
Cerro Negro, Argentina
100%2,400 66.895,060 6,600 72.1215,360 9,000 70.7520,420 75%
Pueblo Viejo, Dominican Republic(9)
40%9,500 12.013,660 45,900 15.8123,330 55,400 15.1626,990 77%
NuevaUnión, Chile(10)(11)
50%— — 1,118,000 1.3147,170 1,118,000 1.3147,170 66%
Norte Abierto, Chile(11)(12)
50%— — 598,800 1.5229,340 598,800 1.5229,340 74%
16,100 21.6711,200 1,878,900 2.69162,310 1,895,000 2.85173,510 63%
Nevada
NGM, Nevada(13)
38.5%6,000 7.831,500 53,800 6.9011,930 59,800 6.9913,430 38%
6,000 7.831,500 53,800 6.9011,930 59,800 6.9913,430 38%
Total Silver134,000 34.55148,790 2,208,600 6.53463,900 2,342,600 8.14612,690 79%
____________________________
(1)Silver reserves, at sites in which Newmont is the operator, for 2021 and 2020 were estimated at a silver price of $20 and $17 per ounce, respectively. Reserves provided by other operators may use pricing that differs.
(2)See footnote (2) to the Gold Proven and Probable Reserves tables above. Tonnages are rounded to nearest 100,000.
(3)See footnote (3) to the Gold Proven and Probable Reserves tables above. Ounces may not recalculate as they are rounded to the nearest 10,000.
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(4)Silver cut-off grade varies with gold, lead and zinc credits.
(5)Stockpiles are comprised primarily of material that has been set aside to allow processing of higher grade material in the mills. Stockpiles increase or decrease depending on current mine plans. Stockpile reserves are reported separately where ounces exceed 100,000 and are greater than 5% of the total site-reported reserves.
(6)Silver cut-off grade varies with gold and copper credits.
(7)Leach pad material is the material on leach pads at the end of the year from which silver remains to be recovered. In-process reserves are reported separately where ounces exceed 100,000 and are greater than 5% of the total site-reported reserves.
(8)Silver cut-off grade varies with gold credits.
(9)The Pueblo Viejo mine, which is 40% owned by Newmont, is accounted for as an equity method investment. Reserve estimates provided by Barrick, the operator of Pueblo Viejo.
(10)Project is currently undeveloped. Reserve estimates provided by the NuevaUnión joint venture.
(11)Currently included in Corporate and Other in Note 4 of the Consolidated Financial Statements.
(12)Project is currently undeveloped. Reserve estimates provided by the Norte Abierto joint venture.
(13)Reserve estimates provided by Barrick, the operator of the NGM joint venture.
(14)In February 2022, the Company increased its ownership interest in Yanacocha to 95% by acquiring Buenaventura’s 43.65% noncontrolling interest. See Note 1 of the Consolidated Financial Statements for further information.
(15)Amounts presented herein have been rounded to the nearest 10,000 for ounces and 100,000 for tonnes and therefore may not agree to the respective Technical Report Summaries provided for certain properties as provided under exhibit 96.
The following tables detail lead proven and probable reserves reflecting only those reserves attributable to Newmont’s ownership or economic interest at December 31, 2021 and 2020:
Lead Reserves at December 31, 2021 (1)(6)
Proven ReservesProbable ReservesProven and Probable Reserves
Deposits/DistrictsNewmont
Share
Tonnage (2)
(000 tonnes)
Grade
(Pb %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Pb %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Pb %)
Pounds (3)
(millions)
Metallurgical
Recovery (3)
North America
Peñasquito Open Pits (4)
100%107,200 0.37%880 219,100 0.3%1,440 326,300 0.32%2,320 73%
Peñasquito Stockpiles (5)
100%7,800 0.34%60 27,900 0.32%200 35,700 0.33%260 73%
Total Lead115,000 0.37%940 247,000 0.3%1,640 362,000 0.32%2,580 73%
Lead Reserves at December 31, 2020 (1)
Proven ReservesProbable ReservesProven and Probable Reserves
Deposits/DistrictsNewmont
Share
Tonnage (2)
(000 tonnes)
Grade
(Pb %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Pb %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Pb %)
Pounds (3)
(millions)
Metallurgical
Recovery (3)
North America
Peñasquito Open Pits (4)
100%100,100 0.39%870 248,100 0.33%1,780 348,200 0.34%2,650 78%
Peñasquito Stockpiles (5)
100%11,800 0.36%90 27,800 0.32%200 39,600 0.33%290 64%
Total Lead111,900 0.39%960 275,900 0.32%1,980 387,800 0.34%2,940 76%
____________________________
(1)Lead reserves for 2021 and 2020 were estimated at a lead price of $0.90 per pound.
(2)See footnote (2) to the Gold Proven and Probable Reserves tables above. Tonnages are rounded to nearest 100,000.
(3)See footnote (3) to the Copper Proven and Probable Reserves tables above. Pounds may not recalculate as they are rounded to the nearest 10 million.
(4)Lead cut-off grade varies with level of gold, silver and zinc credits.
(5)Stockpiles are comprised primarily of material that has been set aside to allow processing of higher grade material in the mills. Stockpiles increase or decrease depending on current mine plans. Stockpile reserves are reported separately where pounds exceed 100 million and are greater than 5% of the total site-reported reserves.
(6)Amounts presented herein have been rounded to the nearest 10 million for pounds and 100,000 for tonnes and therefore may not agree to the respective Technical Report Summaries provided for certain properties as provided under exhibit 96.
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The following tables detail zinc proven and probable reserves reflecting only those reserves attributable to Newmont’s ownership or economic interest at December 31, 2021 and 2020:
Zinc Reserves at December 31, 2021 (1)(6)
Proven ReservesProbable ReservesProven and Probable Reserves
Deposits/DistrictsNewmont
Share
Tonnage (2)
(000 tonnes)
Grade
(Zn %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Zn %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Zn %)
Pounds (3)
(millions)
Metallurgical
Recovery (3)
North America
Peñasquito Open Pits (4)
100%107,200 0.96%2,260 219,100 0.74%3,590 326,300 0.81%5,850 81%
Peñasquito Stockpiles (5)
100%7,800 0.67%120 27,900 0.45%280 35,700 0.5%400 81%
Total Zinc115,000 0.94%2,380 247,000 0.71%3,870 362,000 0.78%6,250 81%
Zinc Reserves at December 31, 2020 (1)
Proven ReservesProbable ReservesProven and Probable Reserves
Deposits/DistrictsNewmont
Share
Tonnage (2)
(000 tonnes)
Grade
(Zn %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Zn %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Zn %)
Pounds (3)
(millions)
Metallurgical
Recovery (3)
North America
Peñasquito Open Pits (4)
100%100,100 0.98%2,170 248,100 0.77%4,210 348,200 0.83%6,380 82%
Peñasquito Stockpiles (5)
100%11,800 0.62%160 27,800 0.44%270 39,600 0.49%430 72%
Total Zinc111,900 0.94%2,330 275,900 0.74%4,480 387,800 0.80%6,810 82%
____________________________
(1)Zinc reserves for 2021 and 2020 were estimated at a zinc price of $1.15 per pound.
(2)See footnote (2) to the Gold Proven and Probable Reserves tables above. Tonnages are rounded to nearest 100,000.
(3)See footnote (3) to the Copper Proven and Probable Reserves tables above. Pounds may not recalculate as they are rounded to the nearest 10 million.
(4)Zinc cut-off grade varies with level of gold, silver and lead credits.
(5)Stockpiles are comprised primarily of material that has been set aside to allow processing of higher grade material in the mills. Stockpiles increase or decrease depending on current mine plans. Stockpile reserves are reported separately where pounds exceed 100 million and are greater than 5% of the total site-reported reserves.
(6)Amounts presented herein have been rounded to the nearest 10 million for pounds and 100,000 for tonnes and therefore may not agree to the respective Technical Report Summaries provided for certain properties as provided under exhibit 96.
The following tables detail molybdenum proven and probable reserves reflecting only those reserves attributable to Newmont’s ownership or economic interest at December 31, 2021 and 2020:
Molybdenum Reserves at December 31, 2021 (1)
Proven ReservesProbable ReservesProven and Probable Reserves
Deposits/DistrictsNewmont
Share
Tonnage (2)
(000 tonnes)
Grade
(Mo %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Mo %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Mo %)
Pounds (3)
(millions)
Metallurgical
Recovery (3)
South America
NuevaUnión, Chile (4)
50%— — 776,900 0.02%270 776,900 0.02%270 48%
Total Molybdenum— — 776,900 0.02%270 776,900 0.02%270 48%
Molybdenum Reserves at December 31, 2020 (1)
Proven ReservesProbable ReservesProven and Probable Reserves
Deposits/DistrictsNewmont
Share
Tonnage (2)
(000 tonnes)
Grade
(Mo %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Mo %)
Pounds (3)
(millions)
Tonnage (2)
(000 tonnes)
Grade
(Mo %)
Pounds (3)
(millions)
Metallurgical
Recovery (3)
South America
NuevaUnión, Chile (4)
50%— — 776,900 0.02%270 776,900 0.02%270 48%
Total Molybdenum— — 776,900 0.02%270 776,900 0.02%270 48%
____________________________
(1)Reserves estimates were estimated based on prices set by the NuevaUnión joint venture. The project is currently undeveloped.
(2)See footnote (2) to the Gold Proven and Probable Reserves tables above. Tonnages are rounded to nearest 100,000.
(3)See footnote (3) to the Copper Proven and Probable Reserves tables above. Pounds may not recalculate as they are rounded to the nearest 10 million.
(4)Currently included in Corporate and Other in Note 4 of the Consolidated Financial Statements.
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Measured, Indicated, and Inferred Resources
All of our resources are located on land (i) we own or control, or (ii) that is owned or controlled by business entities established with our joint venture partners, in which the Company owns its pro-rata share of the capital stock, membership units, or interests. The risks that could affect title to our property are included above in Part I, Item 1A, Risk Factors.
The measured, indicated, and inferred resource figures presented herein are estimates based on information available at the time of calculation and are exclusive of reserves. A “mineral resource” is a concentration or occurrence of solid material of economic interest in or on the Earth’s crust in such form, grade, or quality and quantity that there are reasonable prospects for eventual economic extraction. The location, quantity, grade or quality, continuity and other geological characteristics of a mineral resource are known, estimated or interpreted from specific geological evidence and knowledge, including sampling. The reference point for mineral resources is in situ. Mineral resources are sub-divided, in order of increasing geological confidence, into inferred, indicated and measured categories. Ounces of gold and silver or pounds of copper, zinc, lead, and molybdenum included in the measured, indicated and inferred resources are those contained prior to losses during metallurgical treatment. The terms "measured resource," "indicated resource," and "inferred resource" mean that part of a mineral resource for which quantity and grade or quality are estimated on the basis of geological evidence and sampling that is considered to be comprehensive, adequate, or limited, respectively.
Market fluctuations in the price of gold, silver, copper, zinc, lead and molybdenum, as well as increased production costs or reduced metallurgical recovery rates, could change future estimates of resources. Metal price assumptions are based on approximately a fifteen to twenty-five percent premium over reserve prices.
Our exploration efforts are directed to the discovery of new resources and converting it into proven and probable reserves. We conduct brownfield exploration around our existing mines and greenfield exploration in other regions globally. Brownfield exploration can result in the discovery of additional deposits, which may receive the economic benefit of existing operating, processing and administrative infrastructures. In contrast, the discovery of mineralization through greenfield exploration efforts will require capital investment to build a stand-alone operation. Our Exploration expense was $209, $187 and $265 in 2021, 2020 and 2019, respectively.
We had attributable measured and indicated gold resources of 68.3 million ounces and attributable inferred gold resources of 33.2 million ounces at December 31, 2021. For 2021 and 2020, attributable measured, indicated, and inferred gold resources were estimated at a gold price assumption of $1,400 per ounce.
The resource figures presented herein do not include that part of our resources that have been converted to Proven and Probable Reserves as shown above, as they are reported exclusive of reserves, and have been estimated based on information available at the time of calculation.
Measured, indicated, and inferred resources disclosed at December 31, 2021 have been prepared in accordance with the new Regulation S-K 1300 requirements of the SEC. Measured, indicated, and inferred resources were not presented in our 2020 10-K filed with the SEC on February 18, 2021 but rather Mineralized Material was disclosed. Mineralized Material was comprised of Measured and Indicated resources that we estimated based on our internal methodology and provided only estimates of tonnage and grade. While not included in Mineralized Material at December 31, 2020, our internal methodology also included the estimation of Inferred Resources. This historical methodology was not significantly impacted as a result of implementing the new Regulation S-K 1300 requirements and therefore we believe the amounts presented at December 31, 2021 and 2020, under the respective methodologies, are comparable.
The Company has internal controls for reviewing and documenting the information supporting the mineral reserve and mineral resource estimates, describing the methods used, and ensuring the validity of the estimates. These internal control processes were not materially impacted by the adoption of S-K 1300. Information that is utilized to compile mineral reserves and resources is prepared and certified by appropriately qualified persons at the mine site level and is subject to our internal review process which includes review by the Newmont-designated region and the Qualified Person (“QP”) based in our corporate office in Denver, Colorado. Additionally, all material sites are audited every other year and the non-material sites on a three-year cycle completed by subject matter experts for compliance to internal standards and guidelines as well as regulatory requirements. The QP presents the mineral reserve and mineral resource information to the Audit Committee and the Disclosure Committee on an annual basis for further review.
We publish measured, indicated, and inferred resources annually, and will recalculate them at December 31, 2022, taking into account metal prices, changes, if any, in future production and capital costs, divestments and conversion to reserves, as well as any acquisitions and additions during 2022.
The following tables detail measured, indicated, and inferred resources reflecting only those that are attributable to Newmont’s ownership or economic interest at December 31, 2021 and 2020.
56

Table of Contents

Gold Resources at December 31, 2021 (1)(2)(11)
Measured ResourcesIndicated Resources
Measured and Indicated Resources
Inferred Resources
Deposits/DistrictsNewmont
Share
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Metallurgical
Recovery (3)
North America
CC&V, Colorado
100%54,0000.4170024,1000.3830078,1000.401,00012,7000.3916062%
Musselwhite, Canada100%1,4003.581602,3003.552703,7003.564303,2004.2244096%
Porcupine Underground100%3005.25509006.121801,2005.922301,1006.4322092%
Porcupine Open Pit100%5000.491083,2001.403,75083,7001.403,76077,0001.243,07092%
Total Porcupine, Canada8002.336084,1001.453,93084,9001.463,99078,1001.313,29092%
Éléonore, Canada100%3005.72501,7004.732602,0004.863103,8005.2865091%
Peñasquito, Mexico100%31,4000.27280176,6000.271,500208,0000.271,78089,8000.401,16069%
Noche Buena, Mexico50%— — 21,0000.3725021,0000.372501,6000.211050%
Coffee, Canada100%1,0002.016054,5001.192,08055,5001.202,1406,8001.0723080%
Galore Creek, Canada (4)
50%128,4000.361,500423,4000.233,130551,8000.264,63099,1000.2167073%
217,3000.402,810787,7000.4611,7201,005,0000.4514,530295,1000.706,61079%
South America
Conga, Peru51.35%— — 356,3000.657,490356,3000.657,490118,4000.391,48075%
Yanacocha Open Pit51.35%5,500 0.4270 52,4000.4677057,9000.4684096,7000.802,47066%
Yanacocha Underground51.35%— 6.2910 1,8006.283701,8006.283801,9004.9330097%
Total Yanacocha, Peru (10)
5,500 0.4580 54,2000.651,14059,7000.641,22098,6000.872,77070%
Merian, Suriname75%4,500 0.94140 32,6001.141,20037,1001.121,34028,5001.0192088%
Cerro Negro Underground100%100 5.4820 1,3007.383001,4007.253207,5006.851,65093%
Cerro Negro Open Pit100%900 4.40120 1,0004.091301,9004.242501003.491090%
Total Cerro Negro, Argentina100%1,000 4.51140 2,3005.964303,3005.525707,6006.821,66093%
Pueblo Viejo, Dominican Republic (5)
40%37,300 2.012,410 57,1001.893,47094,4001.945,88025,4001.721,41089%
NuevaUnión, Chile (6)
50%4,800 0.4770 118,3000.592,260123,1000.592,330239,8000.403,05068%
Norte Abierto, Chile (7)
50%77,200 0.611,510 596,9000.499,320674,1000.5010,830369,6000.374,36076%
Agua Rica, Argentina (8)
18.75%141,900 0.251,150 137,4000.15650279,3000.201,800139,9000.0941035%
272,2000.635,5001,355,1000.6025,9601,627,3000.6031,4601,027,8000.4916,06073%
Australia
Boddington, Western Australia100%96,2000.531,640180,5000.543,110276,7000.534,7503,3000.505084%
Tanami Open Pit100%10,2001.8862016,6001.6990026,8001.761,5202,9001.6215090%
Tanami Underground100%1,400 3.11140 4,9004.256606,3004.008009,6005.391,67097%
Total Tanami, Northern Territory100%11,600 2.03760 21,5002.271,56033,1002.182,32012,5004.531,82097%
107,8000.692,400202,0000.724,670309,8000.717,07015,8003.681,87089%
57

Table of Contents

Gold Resources at December 31, 2021 (1)(2)(11) (continued)
Measured ResourcesIndicated Resources
Measured and Indicated Resources
Inferred Resources
Deposits/DistrictsNewmont
Share
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Metallurgical
Recovery (3)
Africa
Ahafo South100%5000.561030,0001.161,12030,5001.151,13013,5001.3357093%
Ahafo Underground100%— — 16,6003.992,12016,6003.992,12010,8003.341,16090%
Total Ahafo South, Ghana5000.561046,6002.163,24047,1002.153,25024,3002.211,73091%
Ahafo North Open Pits, Ghana100%2,8001.2110010,4001.9063013,2001.767309,8001.6050092%
Akyem Open Pits100%9000.57201,1000.67202,0000.62401,3001.436091%
Akyem Underground100%— — 6,8003.698106,8003.698105,4002.9752093%
Total Akyem, Ghana9000.57207,9003.278308,8003.008506,7002.6958092%
4,2001.0113064,9002.264,70069,1002.184,83040,8002.152,81091%
Nevada
NGM Open Pits and Stockpiles38.5%18,3001.891,110181,1000.905,230199,4000.996,340101,1000.822,67067%
NGM Underground38.5%8,5005.891,61011,9006.352,43020,4006.164,04015,3006.483,18086%
Total NGM, Nevada (9)
26,8003.172,720193,0001.237,660219,8001.4710,380116,4001.565,85076%
26,8003.172,720193,0001.237,660219,8001.4710,380116,4001.565,85076%
Total Gold628,3000.6713,5602,602,7000.6554,7103,231,0000.6668,2701,495,9000.6933,20076%

58

Table of Contents

Gold Resources at December 31, 2020 (1)(2)
Measured ResourcesIndicated Resources
Measured and Indicated Resources
Inferred Resources
Deposits/DistrictsNewmont
Share
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
North America
CC&V, Colorado100%103,2000.421,40057,8000.38710161,0000.412,11020,0000.35220
Musselwhite, Canada100%9004.001101,9003.722302,8003.813402,7004.65410
Porcupine Underground100%1005.41205006.681106006.421301,9004.20260
Porcupine Open Pit100%1,4000.723083,3001.403,75084,7001.393,78077,1001.243,070
Total Porcupine, Canada1,5001.045083,8001.433,86085,3001.433,91079,0001.313,330
Éléonore, Canada100%3005.13502,7004.443903,0004.514402,5005.65460
Peñasquito, Mexico100%34,9000.28310241,9000.272,110276,8000.272,420150,9000.401,910
Noche Buena, Mexico50%— — 27,5000.3733027,5000.373302,5000.2220
Coffee, Canada100%1,0002.016054,5001.192,08055,5001.202,1406,8001.07230
Galore Creek, Canada (4)
50%128,4000.361,510423,4000.233,120551,8000.264,63099,1000.21670
270,2000.403,490893,5000.4512,8301,163,7000.4416,320363,5000.627,250
South America
Conga, Peru51.35%— — 356,3000.657,490356,3000.657,490118,4000.391,480
Yanacocha Open Pit51.35%4,400 0.4570 66,6000.4393071,0000.441,00098,7000.812,560
Yanacocha Underground51.35%— 6.2910 1,8006.283701,8006.283801,9004.93300
Total Yanacocha, Peru4,400 0.5780 68,4000.591,30072,8000.591,380100,6000.882,860
Merian, Suriname75%7,300 0.92220 38,4001.071,32045,7001.051,54032,6000.86900
Cerro Negro Underground100%100 4.6810 7,0007.151,6007,1007.111,6102,6007.62630
Cerro Negro Open Pit100%900 4.40130 1,0004.091301,9004.242601003.4910
Total Cerro Negro, Argentina100%1,000 4.43140 8,0006.771,7309,0006.511,8702,7007.52640
Pueblo Viejo, Dominican Republic (5)
40%34,800 2.022,260 56,7001.883,43091,5001.935,69027,5001.791,580
NuevaUnión, Chile (6)
50%4,800 0.4770 118,3000.592,260123,1000.592,330239,8000.403,050
Norte Abierto, Chile (7)
50%77,300 0.611,500 596,9000.499,310674,2000.5010,810369,6000.374,370
Agua Rica, Argentina (8)
18.75%141,900 0.251,150 137,4000.15650279,3000.201,800139,9000.09410
271,5000.625,4201,380,4000.6227,4901,651,9000.6232,9101,031,1000.4615,290
Australia
Boddington, Western Australia100%62,5000.511,030149,3000.512,460211,8000.513,4903,9000.4560
Tanami Open Pit100%3,6001.8521014,2001.7580017,8001.771,0107,6002.07510
Tanami Underground100%300 2.7130 3,0004.634503,3004.4648012,0005.712,200
Total Tanami, Northern Territory100%3,900 1.91240 17,2002.251,25021,1002.191,49019,6004.292,710
66,4000.601,270166,5000.693,710232,9000.674,98023,5003.652,770
59

Table of Contents

Gold Resources at December 31, 2020 (1)(2) (continued)
Measured ResourcesIndicated Resources
Measured and Indicated Resources
Inferred Resources
Deposits/DistrictsNewmont
Share
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces
(000)
Africa
Ahafo South100%5000.631024,8001.1592025,3001.1493012,3001.36540
Ahafo Underground100%— — 15,9003.962,02015,9003.962,0206,4003.30680
Total Ahafo South, Ghana5000.631040,7002.252,94041,2002.232,95018,7002.031,220
Ahafo North Open Pits, Ghana100%2,0001.24808,3001.9953010,3001.846107,1001.78410
Akyem Open Pits100%9000.54201,4000.54302,3000.54502,6001.20100
Akyem Underground100%— — 5,3003.856505,3003.856503,7003.31390
Total Akyem, Ghana9000.54206,7003.166807,6002.867006,3002.42490
3,4000.9611055,7002.324,15059,1002.244,26032,1002.052,120
Nevada
NGM Open Pits and Stockpiles38.5%17,1001.56860159,3000.985,020176,4001.045,88053,3000.781,330
NGM Underground38.5%5,9007.111,34019,1006.433,95025,0006.595,29012,6006.912,790
Total NGM, Nevada (9)
23,0002.972,200178,4001.568,970201,4001.7211,17065,9001.944,120
23,0002.972,200178,4001.568,970201,4001.7211,17065,9001.944,120
Total Gold634,5000.6112,4902,674,5000.6757,1503,309,0000.6569,6401,516,1000.6531,550
____________________________
(1)Resources are reported exclusive of reserves.
(2)Resources, at sites in which Newmont is the operator, are estimated at a gold price of $1,400 per ounce for 2021 and 2020. Resources provided by other operators may use pricing that differs. Tonnage amounts have been rounded to the nearest 100,000. Ounces may not recalculate as they have been rounded to the nearest 10,000.
(3)Ounces are estimates of metal contained in ore tonnages and do not include allowances for processing losses. Metallurgical recovery rates represent the estimated amount of metal to be recovered through metallurgical extraction processes. Ounces may not recalculate as they are rounded to the nearest 10,000.
(4)Project is currently undeveloped. Resource estimates provided by Teck Resources.
(5)Resource estimates provided by Barrick, the operator of Pueblo Viejo.
(6)Project is currently undeveloped. Resource estimates provided by the NuevaUnión joint venture.
(7)Project is currently undeveloped. Resource estimates provided by the Norte Abierto joint venture.
(8)Project is currently undeveloped. Resource estimates provided by Yamana, the operator of the Agua Rica joint venture.
(9)Resource estimates provided by Barrick, the operator of the NGM joint venture
(10)In February 2022, the Company increased its ownership interest in Yanacocha to 95% by acquiring Buenaventura’s 43.65% noncontrolling interest. See Note 1 of the Consolidated Financial Statements for further information.
(11)Amounts presented herein have been rounded to the nearest 10,000 for ounces and 100,000 for tonnes and therefore may not agree to the respective Technical Report Summaries provided for certain properties as provided under exhibit 96.

60

Table of Contents

Copper Resources at December 31, 2021 (1)(2)(10)
Measured ResourcesIndicated ResourcesMeasured and Indicated Resources Inferred Resources
Deposits/DistrictsNewmont
Share
Tonnage
(000 tonnes)
Grade
(Cu%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Cu%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Cu%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Cu%)
Pounds (millions)
Metallurgical
Recovery (3)
North America
Galore Creek, Canada (4)
50%128,400 0.72%2,030 423,400 0.39%3,630 551,800 0.47%5,660 99,100 0.27%600 91%
128,400 0.72%2,030 423,400 0.39%3,630 551,800 0.47%5,660 99,100 0.27%600 91%
South America
Conga, Peru51.35%— —%— 356,300 0.26%2,040 356,300 0.26%2,040 118,400 0.19%490 84%
Yanacocha Open Pits and Stockpiles51.35%— —%— 48,600 0.39%420 48,600 0.39%420 18,700 0.39%160 80%
Yanacocha Underground51.35%— —%— 1,800 0.09%— 1,800 0.09%— 1,900 0.13%10 96%
Total Yanacocha, Peru (9)
— —%— 50,400 0.38%420 50,400 0.38%420 20,600 0.37%170 81%
NuevaUnión, Chile (5)
50%164,300 0.19%700 349,900 0.34%2,650 514,200 0.30%3,350 602,100 0.39%5,150 89%
Norte Abierto, Chile (6)
50%57,600 0.24%310 551,200 0.19%2,340 608,800 0.20%2,650 361,700 0.18%1,450 90%
Agua Rica, Argentina (7)
18.75%141,900 0.51%1,580 137,400 0.36%1,100 279,300 0.43%2,680 139,900 0.23%710 86%
363,800 0.32%2,590 1,445,200 0.27%8,550 1,809,000 0.28%11,140 1,242,700 0.29%7,970 87%
Australia
Boddington, Western Australia100%96,200 0.11%220 180,500 0.11%450 276,700 0.11%670 3,300 0.09%10 82%
96,200 0.11%220 180,500 0.11%450 276,700 0.11%670 3,300 0.09%10 82%
Nevada
NGM, Nevada (8)
38.5%3,100 0.14%10 111,500 0.14%340 114,600 0.14%350 19,900 0.13%60 66%
3,100 0.14%10 111,500 0.14%340 114,600 0.14%350 19,900 0.13%60 66%
Total Copper591,500 0.37%4,850 2,160,600 0.27%12,970 2,752,100 0.29%17,820 1,365,000 0.29%8,640 88%
61

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Copper Resources at December 31, 2020 (1)(2)
Measured ResourcesIndicated ResourcesMeasured and Indicated Resources Inferred Resources
Deposits/DistrictsNewmont
Share
Tonnage
(000 tonnes)
Grade
(Cu%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Cu%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Cu%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Cu%)
Pounds (millions)
North America
Galore Creek, Canada (4)
50%128,400 0.72%2,030 423,400 0.39%3,630 551,800 0.47%5,660 99,100 0.27%600 
128,400 0.72%2,030 423,400 0.39%3,630 551,800 0.47%5,660 99,100 0.27%600 
South America
Conga, Peru51.35%— —%— 356,300 0.26%2,040 356,300 0.26%2,040 118,400 0.19%490 
Yanacocha Open Pits and Stockpiles51.35%— —%— 48,600 0.39%420 48,600 0.39%420 18,700 0.39%160 
Yanacocha Underground51.35%— —%— 1,800 0.09%— 1,800 0.09%— 1,900 0.13%10 
Total Yanacocha, Peru— —%— 50,400 0.38%420 50,400 0.38%420 20,600 0.36%170 
NuevaUnión, Chile (5)
50%164,300 0.19%700 349,900 0.34%2,650 514,200 0.30%3,350 602,200 0.39%5,150 
Norte Abierto, Chile (6)
50%57,600 0.24%310 551,200 0.19%2,340 608,800 0.20%2,650 361,800 0.18%1,450 
Agua Rica, Argentina (7)
18.75%141,900 0.51%1,580 137,400 0.36%1,100 279,300 0.44%2,680 139,900 0.23%710 
363,800 0.32%2,590 1,445,200 0.27%8,550 1,809,000 0.28%11,140 1,242,900 0.29%7,970 
Australia
Boddington, Western Australia100%62,500 0.11%150 149,300 0.12%380 211,800 0.11%530 3,900 0.09%10 
62,500 0.11%150 149,300 0.12%380 211,800 0.11%530 3,900 0.09%10 
Nevada
NGM, Nevada (8)
38.5%11,200 0.16%40 83,200 0.14%250 94,400 0.14%290 13,000 0.15%40 
11,200 0.16%40 83,200 0.14%250 94,400 0.14%290 13,000 0.15%40 
Total Copper565,900 0.39%4,810 2,101,100 0.28%12,810 2,667,000 0.30%17,620 1,358,900 0.29%8,620 
____________________________
(1)Resources are reported exclusive of reserves.
(2)Resources, at sites in which Newmont is the operator, are estimated at a copper price of $3.25 per pound for 2021 and 2020. Resources provided by other operators may use pricing that differs. Tonnage amounts have been rounded to the nearest 100,000.
(3)Pounds are estimates of metal contained in ore tonnages and do not include allowances for processing losses. Metallurgical recovery rates represent the estimated amount of metal to be recovered through metallurgical extraction processes. Pounds may not recalculate as they are rounded to the nearest 10 million.
(4)Project is currently undeveloped. Resource estimates provided by Teck Resources.
(5)Project is currently undeveloped. Resource estimates provided by the NuevaUnión joint venture.
(6)Project is currently undeveloped. Resource estimates provided by the Norte Abierto joint venture.
(7)Project is currently undeveloped. Resource estimates provided by Yamana, the operator of the Agua Rica joint venture.
(8)Resource estimates provided by Barrick, the operator of the NGM joint venture
(9)In February 2022, the Company increased its ownership interest in Yanacocha to 95% by acquiring Buenaventura’s 43.65% noncontrolling interest. See Note 1 of the Consolidated Financial Statements for further information.
(10)Amounts presented herein have been rounded to the nearest 10 million for pounds and 100,000 for tonnes and therefore may not agree to the respective Technical Report Summaries provided for certain properties as provided under exhibit 96.

62

Table of Contents

Silver Resources at December 31, 2021 (1)(2)(11)
Measured ResourcesIndicated Resources
Measured and Indicated Resources
Inferred Resources
Deposits/DistrictsNewmont
Share
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces (000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces (000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces (000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces (000)
Metallurgical
Recovery (3)
North America
Peñasquito, Mexico100%31,400 25.7125,990 176,600 26.36149,620 208,000 26.26175,610 89,800 28.0080,840 87%
Noche Buena, Mexico50%— — 21,000 13.949,400 21,000 13.949,400 1,600 11.08570 25%
Galore Creek, Canada (4)
50%128,400 5.7923,900 423,400 3.7551,030 551,800 4.2274,930 99,100 2.658,440 64%
159,800 9.7149,890 621,000 10.52210,050 780,800 10.35259,940 190,500 14.6789,850 75%
South America
Conga, Peru51.35%— — 356,300 2.0623,580 356,300 2.0623,580 89,900 1.133,250 70%
Yanacocha Open Pits and Stockpiles51.35%4,600 3.31490 44,600 13.0918,750 49,200 12.1719,240 14,400 13.096,070 43%
Yanacocha Underground51.35%— 1.13— 1,800 64.293,760 1,800 62.683,760 1,900 37.562,260 87%
Total Yanacocha, Peru (10)
4,600 3.31490 46,400 15.0922,510 51,000 14.0323,000 16,300 15.908,330 55%
Cerro Negro Underground100%100 46.22140 1,300 57.302,360 1,400 56.552,500 7,500 39.049,400 75%
Cerro Negro Open Pit100%900 8.53240 1,000 7.87250 1,900 8.18490 100 11.0720 60%
Total Cerro Negro, Argentina1,000 12.15380 2,300 35.922,610 3,300 28.762,990 7,600 38.809,420 74%
Pueblo Viejo, Dominican Republic (5)
40%37,300 11.5113,800 57,100 10.8519,940 94,400 11.1133,740 25,400 9.007,360 74%
NuevaUnión, Chile (6)
50%164,300 0.965,080 349,800 1.1913,360 514,100 1.1218,440 602,100 1.1622,520 66%
Norte Abierto, Chile (7)
50%77,200 1.202,990 596,900 1.0720,550 674,100 1.0923,540 369,600 0.9511,340 78%
Agua Rica, Argentina (8)
18.75%120,200 2.9011,190 135,700 2.4110,520 255,900 2.6421,710 139,300 1.627,260 43%
404,600 2.6133,930 1,544,500 2.28113,070 1,949,100 2.35147,000 1,250,200 1.7369,480 61%
Nevada
NGM, Nevada (9)
38.5%2,900 5.57520 84,000 5.5414,960 86,900 5.5415,480 18,900 5.603,410 38%
2,900 5.57520 84,000 5.5414,960 86,900 5.5415,480 18,900 5.603,410 38%
Total Silver567,3004.6284,340 2,249,500 4.68338,080 2,816,800 4.66422,420 1,459,600 3.47162,740 66%
63

Table of Contents

Silver Resources at December 31, 2020 (1)(2)
Measured ResourcesIndicated Resources
Measured and Indicated Resources
Inferred Resources
Deposits/DistrictsNewmont
Share
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces (000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces (000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces (000)
Tonnage
(000 tonnes)
Grade
(g/tonne)
Ounces (000)
North America
Peñasquito, Mexico100%34,900 26.8130,080 241,900 26.74207,990 276,800 26.75238,070 150,900 26.36127,920 
Noche Buena, Mexico50%— — 27,500 12.3510,920 27,500 12.3510,920 2,500 8.08640 
Galore Creek, Canada (4)
50%128,400 5.7923,900 423,400 3.7551,020 551,800 4.2274,920 99,100 2.658,440 
163,300 10.2853,980 692,800 12.12269,930 856,100 11.77323,910 252,500 16.88137,000 
South America
Conga, Peru51.35%— — 356,300 2.0623,580 356,300 2.0623,580 89,900 1.133,250 
Yanacocha Open Pits and Stockpiles51.35%4,200 2.71370 40,900 14.1318,590 45,100 13.0718,960 14,100 13.866,280 
Yanacocha Underground51.35%— — 1,800 64.293,760 1,800 62.683,760 1,900 37.562,260 
Total Yanacocha, Peru4,200 2.71370 42,700 16.2822,350 46,900 15.0722,720 16,000 16.608,540 
Cerro Negro Underground100%100 52.14150 7,000 35.157,870 7,100 35.378,020 2,600 65.535,440 
Cerro Negro Open Pit100%900 8.53240 1,000 7.87250 1,900 8.18490 100 11.0720 
Total Cerro Negro, Argentina1,000 12.56390 8,000 31.808,120 9,000 29.708,510 2,700 64.215,460 
Pueblo Viejo, Dominican Republic (5)
40%34,800 10.2411,480 56,700 8.8416,120 91,500 9.3827,600 27,500 7.776,870 
NuevaUnión, Chile (6)
50%164,300 0.965,080 349,900 1.1913,370 514,200 1.1218,450 602,200 1.1622,530 
Norte Abierto, Chile (7)
50%77,300 1.202,990 596,900 1.0720,560 674,200 1.0923,550 369,600 0.9511,330 
Agua Rica, Argentina (8)
18.75%120,200 2.9011,190 135,700 2.4110,520 255,900 2.6421,710 139,300 1.627,260 
401,800 2.4431,500 1,546,200 2.31114,620 1,948,000 2.33146,120 1,247,200 1.6365,240 
Nevada
NGM, Nevada (9)
38.5%4,300 5.88810 60,500 5.7311,130 64,800 5.7411,940 8,700 5.911,650 
4,300 5.88810 60,500 5.7311,130 64,800 5.7411,940 8,700 5.911,650 
Total Silver569,4004.7186,290 2,299,500 5.35395,680 2,868,900 5.23481,970 1,508,400 4.21203,890 
____________________________
(1)Resources are reported exclusive of reserves.
(2)Resources, at sites in which Newmont is the operator, are estimated at a silver price of $23 and $20 per ounce for 2021 and 2020, respectively. Resources provided by other operators may use pricing that differs. Tonnage amounts have been rounded to the nearest 100,000.
(3)See footnote (3) to the Gold Measured, Indicated and Inferred Resources tables above. Ounces may not recalculate as they are rounded to the nearest 10,000.
(4)Project is currently undeveloped. Resource estimates provided by Teck Resources.
(5)Resource estimates provided by Barrick, the operator of the Pueblo Viejo.
(6)Project is currently undeveloped. Resource estimates provided by the NuevaUnión joint venture.
(7)Project is currently undeveloped. Resource estimates provided by the Norte Abierto joint venture.
(8)Project is currently undeveloped. Resource estimates provided by Yamana, the operator of the Agua Rica joint venture.
(9)Resource estimates provided by Barrick, the operator of the NGM joint venture.
(10)In February 2022, the Company increased its ownership interest in Yanacocha to 95% by acquiring Buenaventura’s 43.65% noncontrolling interest. See Note 1 of the Consolidated Financial Statements for further information.
(11)Amounts presented herein have been rounded to the nearest 10,000 for ounces and 100,000 for tonnes and therefore may not agree to the respective Technical Report Summaries provided for certain properties as provided under exhibit 96.

64

Table of Contents

Zinc Resources at December 31, 2021 (1)(2)4)
Measured ResourceIndicated Resource
Measured and Indicated Resource
Inferred Resource
Deposits/DistrictsNewmont
Share
Tonnage
(000 tonnes)
Grade
(Zn%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Zn%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Zn%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Zn%)
Pounds (millions)
Metallurgical
Recovery (3)
North America
Peñasquito, Mexico100%31,400 0.66%460 176,600 0.57%2,230 208,000 0.59%2,690 89,800 0.54%1,070 81%
Total Zinc31,400 0.66%460 176,600 0.57%2,230 208,000 0.59%2,690 89,800 0.54%1,070 81%
Zinc Resources at December 31, 2020 (1)(2)
Measured ResourceIndicated Resource
Measured and Indicated Resource
Inferred Resource
Deposits/DistrictsNewmont
Share
Tonnage
(000 tonnes)
Grade
(Zn%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Zn%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Zn%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Zn%)
Pounds (millions)
North America
Peñasquito, Mexico100%34,900 0.69%500 241,900 0.59%3,100 276,800 0.60%3,700 150,900 0.53%1,700 
Total Zinc34,900 0.69%500 241,900 0.59%3,100 276,800 0.60%3,700 150,900 0.53%1,700 
____________________________
(1)Resources are reported exclusive of reserves.
(2)Resources are estimated at a zinc price of $1.40 per pound for 2021 and 2020. Tonnage amounts have been rounded to the nearest 100,000.
(3)See footnote (3) to the Copper Measured, Indicated and Inferred Resources tables above. Pounds may not recalculate as they are rounded to the nearest 10 million.
(4)Amounts presented herein have been rounded to the nearest 10 million for pounds and 100,000 for tonnes and therefore may not agree to the respective Technical Report Summaries provided for certain properties as provided under exhibit 96.

Lead Resources at December 31, 2021 (1)(2)(4)
Measured ResourceIndicated ResourceMeasured and Indicated ResourceInferred Resource
Deposits/DistrictsNewmont
Share
Tonnage
(000 tonnes)
Grade
(Pb%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Pb%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Pb%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Pb%)
Pounds (millions)
Metallurgical
Recovery (3)
North America
Peñasquito, Mexico100 %31,400 0.29%200 176,600 0.26%1,020 208,000 0.27%1,230 89,800 0.24%480 73%
Total Lead31,400 0.29%200 176,600 0.26%1,020 208,000 0.27%1,230 89,800 0.24%480 73%

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Lead Resources at December 31, 2020 (1)(2)
Measured ResourceIndicated ResourceMeasured and Indicated ResourceInferred Resource
Deposits/DistrictsNewmont
Share
Tonnage
(000 tonnes)
Grade
(Pb%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Pb%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Pb%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Pb%)
Pounds (millions)
North America
Peñasquito, Mexico100 %34,900 0.30%200 241,900 0.27%1,500 276,800 0.28%1,700 150,900 0.27%900 
Total Lead34,900 0.30%200 241,900 0.27%1,500 276,800 0.28%1,700 150,900 0.27%900 
____________________________
(1)Resources are reported exclusive of reserves.
(2)Resources are estimated at a lead price of $1.10 per pound for 2021 and 2020. Tonnage amounts have been rounded to the nearest 100,000.
(3)See footnote (3) to the Copper Measured, Indicated and Inferred Resources tables above. Pounds may not recalculate as they are rounded to the nearest 10 million.
(4)Amounts presented herein have been rounded to the nearest 10 million for pounds and 100,000 for tonnes and therefore may not agree to the respective Technical Report Summaries provided for certain properties as provided under exhibit 96.
Molybdenum Resources at December 31, 2021 (1)(2)
Measured ResourceIndicated ResourceMeasured and Indicated ResourceInferred Resource
Deposits/DistrictsNewmont
Share
Tonnage
(000 tonnes)
Grade
(Mo%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Mo%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Mo%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Mo%)
Pounds (millions)
Metallurgical
Recovery (3)
South America
NuevaUnión, Chile (4)
50%159,500 0.01%20 231,500 0.01%40 391,000 0.01%60 362,300 0.01%100 52%
Agua Rica, Argentina (5)
18.75%141,900 0.03%80 137,400 0.03%90 279,300 0.03%170 139,900 0.03%90 44%
Total Molybdenum301,400 0.02%100 368,900 0.02%130 670,300 0.02%230 502,200 0.02%190 46%
Molybdenum Resources at December 31, 2020 (1)(2)
Measured ResourceIndicated ResourceMeasured and Indicated ResourceInferred Resource
Deposits/DistrictsNewmont
Share
Tonnage
(000 tonnes)
Grade
(Mo%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Mo%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Mo%)
Pounds (millions)
Tonnage
(000 tonnes)
Grade
(Mo%)
Pounds (millions)
South America
NuevaUnión, Chile (4)
50%159,500 0.01%20 231,500 0.01%40 391,000 0.01%60 362,300 0.01%100 
Agua Rica, Argentina (5)
18.75%141,900 0.03%80 137,400 0.03%90 279,300 0.03%170 139,900 0.03%90 
Total Molybdenum301,400 0.02%100 368,900 0.02%130 670,300 0.02%230 502,200 0.02%190 
____________________________
(1)Resources are reported exclusive of reserves.
(2)Resources for NuevaUnión and Agua Rica are estimated based on a molybdenum price set by NuevaUnión joint venture and Yamana, respectively. Tonnage amounts have been rounded to the nearest 100,000.
(3)See footnote (3) to the Copper Measured, Indicated and Inferred Resources tables above. Pounds may not recalculate as they are rounded to the nearest 10 million.
(4)Project is currently undeveloped. Resource estimates provided by NuevaUnión joint venture.
(5)Project is currently undeveloped. Resource estimates provided by Yamana, the operator of the Agua Rica joint venture.
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ITEM 4.       MINE SAFETY DISCLOSURES
At Newmont, safety is a core value, and we strive for superior performance. Our health and safety management system, which includes detailed standards and procedures for safe production, addresses topics such as employee training, risk management, workplace inspection, emergency response, accident investigation and program auditing. In addition to strong leadership and involvement from all levels of the organization, these programs and procedures form the cornerstone of safety at Newmont, ensuring that employees are provided a safe and healthy environment and are intended to reduce workplace accidents, incidents and losses, comply with all mining-related regulations and provide support for both regulators and the industry to improve mine safety.
In addition, we have established our “Rapid Response” crisis management process to mitigate and prevent the escalation of adverse consequences if existing risk management controls fail, particularly if an incident may have the potential to seriously impact the safety of employees, the community or the environment. This process provides appropriate support to an affected site to complement their technical response to an incident, so as to reduce the impact by considering the environmental, strategic, legal, financial and public image aspects of the incident, to ensure communications are being carried out in accordance with legal and ethical requirements and to identify actions in addition to those addressing the immediate hazards.
The health and safety of our people and our host communities is paramount. This is why Newmont engaged its Rapid Response process early in connection with the on-going COVID-19 pandemic and continues to sustain robust controls at our operations and offices globally. For steps taken by the Company, see "COVID-19 Pandemic" in Part I, Item 1, Business.
The operation of our U.S. based mine is subject to regulation by the Federal Mine Safety and Health Administration (“MSHA”) under the Federal Mine Safety and Health Act of 1977 (the “Mine Act”). MSHA inspects our mine on a regular basis and issues various citations and orders when it believes a violation has occurred under the Mine Act. Following passage of The Mine Improvement and New Emergency Response Act of 2006, MSHA significantly increased the numbers of citations and orders charged against mining operations. The dollar penalties assessed for citations issued has also increased in recent years.
Newmont is required to report certain mine safety violations or other regulatory matters required by Section 1503(a) of the Dodd-Frank Wall Street Reform and Consumer Protection Act and Item 104 of Regulation S-K, and that required information is included in Exhibit 95 and is incorporated by reference into this Annual Report. It is noted that the Nevada mines owned by NGM, in which the Company holds a 38.5% interest, are not included in the Company’s Exhibit 95 mine safety disclosure reporting as such sites are operated by our joint venture partner, Barrick.
ITEM 3.       LEGAL PROCEEDINGS
Information regarding legal proceedings is contained in Note 26 to the Consolidated Financial Statements contained in this Report and is incorporated herein by reference. The Company has elected to apply a threshold of $1 million pursuant to Item 103(c)(3)(iii) of Regulation S-K in connection with environmental proceedings to which a governmental authority is a party.
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PART II
ITEM 5.       MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASE OF EQUITY SECURITIES
Our common stock is listed and principally traded on the New York Stock Exchange under the symbol “NEM.” On February 17, 2022, there were 792,502,327 shares of Newmont’s common stock outstanding, which were held by approximately 7,400 stockholders of record.
During the period from October 1, 2021 to December 31, 2021, 5,034,731 shares of Newmont's equity securities registered pursuant to Section 12 of the Exchange Act of 1934, as amended, were purchased by the Company, or an affiliated purchaser.
(a)(b)(c)(d)
Period
Total Number of Shares Purchased(1)
Average Price Paid Per Share(1)
Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs(2)
Maximum Dollar Value of Shares that may yet be Purchased under the Plans or Programs(2)
October 1, 2021 through October 31, 202122,335 $62.42 — $751,694,456 
November 1, 2021 through November 30, 20213,232,503 $54.76 3,226,225 $575,022,802 
December 1, 2021 through December 31, 20211,779,893 $56.18 1,779,893 $475,022,834 
____________________________
(1)The total number of shares purchased (and the average price paid per share) reflects: (i) shares purchased pursuant to the repurchase program described in (2) below; and (ii) represents shares delivered to the Company from stock awards held by employees upon vesting for the purpose of covering the recipients’ tax withholding obligations, totaling 22,335 shares, 6,278 shares and — shares for the fiscal months of October, November and December 2021, respectively.
(2)In January 2021, the Company announced that the Board of Directors authorized a stock repurchase program to repurchase shares of outstanding common stock to offset the dilutive impact of employee stock award vesting and to provide returns to shareholders, provided that the aggregate value of shares of common stock repurchased under the new program does not exceed $1 billion. In February 2022, the Board of Directors authorized the extension of this program to December 31, 2022. The extent to which the Company repurchases its shares, and the timing of such repurchases, will depend upon a variety of factors, including trading volume, market conditions, legal requirements, business conditions and other factors. The repurchase program may be discontinued at any time, and the program does not obligate the Company to acquire any specific number of shares of its common stock.
ITEM 6.       RESERVED
None.
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ITEM 7.       MANAGEMENT’S DISCUSSION AND ANALYSIS OF CONSOLIDATED FINANCIAL CONDITION AND RESULTS OF OPERATIONS (dollars in millions, except per share, per ounce and per pound amounts)
The following Management’s Discussion and Analysis (“MD&A”) provides information that management believes is relevant to an assessment and understanding of the consolidated financial condition and results of operations of Newmont Corporation, a Delaware corporation, and its subsidiaries (collectively, “Newmont,” the “Company,” “our” and “we”). We use certain non-GAAP financial measures in our MD&A. For a detailed description of each of the non-GAAP measures used in this MD&A, please see the discussion under “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis. This item should be read in conjunction with our Consolidated Financial Statements and the notes thereto included in this annual report.
The following MD&A generally discusses our consolidated financial condition and results of operations for 2021 and 2020 and year-to-year comparisons between 2021 and 2020. Discussions of our consolidated financial condition and results of operations for 2019 and year-to-year comparisons between 2020 and 2019 are included in Item 7, Management’s Discussion and Analysis of Consolidated Financial Condition and Results of Operations, in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2020, filed with the Securities and Exchange Commission on February 18, 2021.
Overview
Newmont is the world’s leading gold company and is the only gold company included in the S&P 500 Index and the Fortune 500 list of companies. We have been included in the Dow Jones Sustainability Index-World since 2007 and have adopted the World Gold Council’s Conflict-Free Gold Policy. Since 2015, Newmont has been ranked as the mining and metal sector’s top gold miner by the SAM S&P Corporate Sustainability Assessment. Newmont has been ranked the top miner in 3BL Media’s 100 Best Corporate Citizens list which ranks the 1,000 largest publicly traded U.S. companies on environmental, social and governance ("ESG") transparency and performance since 2020. We are primarily engaged in the exploration for and acquisition of gold properties, some of which may contain copper, silver, lead, zinc or other metals. We have significant operations and/or assets in the United States (“U.S.”), Canada, Mexico, Dominican Republic, Peru, Suriname, Argentina, Chile, Australia and Ghana. Our goal is to create value and improve lives through sustainable and responsible mining.
We have been closely monitoring the COVID-19 pandemic and its impacts and potential impacts on our business. However, because of the changing developments with respect to the spread of COVID-19 and the unprecedented nature of the pandemic, we are unable to predict the extent and duration of any potential adverse financial impact of COVID-19 on our business, financial condition and results of operations. Refer to Note 2 of the Consolidated Financial Statements for discussion on potential future impacts to our results of operations and financial position resulting from the COVID-19 pandemic.
Refer to “2021 Results and Highlights,” and "Environmental, Social and Governance Practices ("ESG")" within Part I, Item 1, Business and “Results of Consolidated Operations,” “Liquidity and Capital Resources” and “Non-GAAP Financial Measures” within Part II, Item 7, Management’s Discussion and Analysis for additional information about the impact of COVID-19 on our business and operations. For a discussion of COVID-19 related risks to the business, see Part I, Item 1A, Risk Factors.
In February 2022, the Company completed the acquisition of Buenaventura’s 43.65% noncontrolling interest in Yanacocha (the “Yanacocha Transaction”) and sold its 46.94% ownership interest in Minera La Zanja S.R.L. (“La Zanja”). See Note 1 of the Consolidated Financial Statements for further information.
On April 18, 2019 (the “acquisition date”), Newmont completed the business acquisition of Goldcorp, Inc. (“Goldcorp”), an Ontario corporation. The Company acquired all outstanding common shares of Goldcorp in a primarily stock transaction (the “Newmont Goldcorp transaction”) for total cash and non-cash consideration of $9,456. The financial information included in the following discussion and analysis of financial condition and results of operations includes the results of operations acquired in the Newmont Goldcorp transaction since April 18, 2019. For further information, see Note 3 to the Consolidated Financial Statements.
On March 10, 2019, the Company entered into an implementation agreement with Barrick Gold Corporation (“Barrick”) to establish a joint venture (“Nevada JV Agreement”). On July 1, 2019 (the “effective date”), Newmont and Barrick consummated the Nevada JV Agreement and established Nevada Gold Mines LLC (“NGM”). As of the effective date, the Company contributed its Carlin, Phoenix, Twin Creeks and Long Canyon mines ("existing Nevada mining operations") and Barrick contributed certain of its Nevada mining operations and assets. Newmont and Barrick hold economic interests in the joint venture equal to 38.5% and 61.5%, respectively. Barrick acts as the operator of NGM with overall management responsibility and is subject to the supervision and direction of NGM’s Board of Managers. The Company accounts for its interest in NGM using the proportionate consolidation method, thereby recognizing its pro-rata share of the assets, liabilities and operations of NGM. For further information, see Note 1 to the Consolidated Financial Statements.
For information on asset sales impacting comparability of below results, see Note 10 to the Consolidated Financial Statements.
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Consolidated Financial Results
The details of our Net income (loss) from continuing operations attributable to Newmont stockholders are set forth below:
Year Ended December 31,Increase
(decrease)
20212020
Net income (loss) from continuing operations attributable to Newmont stockholders $1,109 $2,666 $(1,557)
Net income (loss) from continuing operations attributable to Newmont stockholders per common share, diluted$1.39 $3.31 $(1.92)
Year Ended December 31,Increase
(decrease)
20202019
Net income (loss) from continuing operations attributable to Newmont stockholders $2,666 $2,877 $(211)
Net income (loss) from continuing operations attributable to Newmont stockholders per common share, diluted$3.31 $3.91 $(0.60)
The decrease in Net income (loss) from continuing operations attributable to Newmont stockholders during the year ended December 31, 2021, compared to the same period in 2020, is primarily due to higher Reclamation and remediation expense resulting from adjustments mainly related to portions of Yanacocha site operations no longer in production with no expected substantive future economic value, the Loss on assets held for sale in connection with the Conga mill assets, lower Gain on asset and investment sales, and higher income tax expense, partially offset by higher average realized metal prices and higher sales volumes as well as lower Care and maintenance due to certain operations being placed into care and maintenance or experiencing reduced operations in response to the COVID-19 pandemic during 2020. Refer to Notes 6, 8, 10, 12 and 7, respectively, of the Consolidated Financial Statements for additional information.
The details of our Sales are set forth below. Refer to Note 5 of the Consolidated Financial Statements for additional information.
Year Ended December 31,Increase
(decrease)
Percent
Change
20212020
Gold$10,543 $10,350 $193 %
Copper295 155 140 90 
Silver651 510 141 28 
Lead172 134 38 28 
Zinc561 348 213 61 
$12,222 $11,497 $725 %
Year Ended December 31,Increase
(decrease)
Percent
Change
20202019
Gold$10,350 $9,049 $1,301 14 %
Copper155 210 (55)(26)
Silver510 253 257 102 
Lead134 85 49 58 
Zinc348 143 205 143 
$11,497 $9,740 $1,757 18 %
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The following analysis summarizes consolidated sales for the year ended December 31, 2021:
Year Ended December 31, 2021
GoldCopperSilverLeadZinc
(ounces)(pounds)(ounces)(pounds)(pounds)
Consolidated sales:
Gross before provisional pricing and streaming impact$10,581 $292 $641 $173 $593 
Provisional pricing mark-to-market10 (12)21 
Silver streaming amortization— — 79 — — 
Gross after provisional pricing and streaming impact10,590 302 708 177 614 
Treatment and refining charges(47)(7)(57)(5)(53)
Net$10,543 $295 $651 $172 $561 
Consolidated ounces (thousands)/ pounds (millions) sold5,897 69 32,237 173 433 
Average realized price (per ounce/pound): (1)
Gross before provisional pricing and streaming impact$1,794 $4.24 $19.92 $1.00 $1.37 
Provisional pricing mark-to-market0.15 (0.40)0.02 0.05 
Silver streaming amortization— — 2.44 — — 
Gross after provisional pricing and streaming impact1,796 4.39 21.96 1.02 1.42 
Treatment and refining charges(8)(0.10)(1.77)(0.02)(0.12)
Net$1,788 $4.29 $20.19 $1.00 $1.30 
___________________________
(1)Per ounce/pound measures may not recalculate due to rounding.
The following analysis summarizes consolidated sales for the year ended December 31, 2020:
Year Ended December 31, 2020
GoldCopperSilverLeadZinc
(ounces)(pounds)(ounces)(pounds)(pounds)
Consolidated sales:
Gross before provisional pricing and streaming impact$10,365 $160 $468 $155 $419 
Provisional pricing mark-to-market54 21 (2)
Silver streaming amortization— — 67 — — 
Gross after provisional pricing and streaming impact10,419 161 556 153 425 
Treatment and refining charges(69)(6)(46)(19)(77)
Net$10,350 $155 $510 $134 $348 
Consolidated ounces (thousands)/ pounds (millions) sold5,831 56 28,596 185 407 
Average realized price (per ounce/pound): (1)
Gross before provisional pricing and streaming impact$1,778 $2.88 $16.37 $0.84 $1.03 
Provisional pricing mark-to-market0.01 0.74 (0.01)0.01 
Silver streaming amortization— — 2.34 — — 
Gross after provisional pricing and streaming impact1,787 2.89 19.45 0.83 1.04 
Treatment and refining charges(12)(0.11)(1.59)(0.11)(0.18)
Net$1,775 $2.78 $17.86 $0.72 $0.86 
____________________________
(1)Per ounce/pounds measures may not recalculate due to rounding.
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The following analysis summarizes consolidated sales for the year ended December 31, 2019:
Year Ended December 31, 2019
GoldCopperSilverLeadZinc
(ounces)(pounds)(ounces)(pounds)(pounds)
Consolidated sales:
Gross before provisional pricing and streaming impact$9,063 $220 $218 $97 $187 
Provisional pricing mark-to-market15 (1)— 
Silver streaming amortization— — 37 — — 
Gross after provisional pricing and streaming impact9,078 219 262 98 187 
Treatment and refining charges(29)(9)(9)(13)(44)
Net$9,049 $210 $253 $85 $143 
Consolidated ounces (thousands)/ pounds (millions) sold6,4658015,987108179
Average realized price (per ounce/pound): (1)
Gross before provisional pricing and streaming impact$1,402 $2.76 $13.57 $0.90 $1.05 
Provisional pricing mark-to-market(0.01)0.45 0.01 — 
Silver streaming amortization— — 2.31 — — 
Gross after provisional pricing and streaming impact1,404 2.75 16.33 0.91 1.05 
Treatment and refining charges(5)(0.12)(0.54)(0.12)(0.25)
Net$1,399 $2.63 $15.79 $0.79 $0.80 
____________________________
(1)Per ounce/pound measures may not recalculate due to rounding.
The change in consolidated sales is due to:
Year Ended December 31,
2021 vs. 2020
GoldCopperSilverLeadZinc
(ounces)(pounds)(ounces)(pounds)(pounds)
Increase (decrease) in consolidated ounces/pounds sold$117 $32 $71 $(9)$27 
Increase (decrease) in average realized price54 109 81 33 162 
Decrease (increase) in treatment and refining charges22 (1)(11)14 24 
$193 $140 $141 $38 $213 
Year Ended December 31,
2020 vs. 2019
GoldCopperSilverLeadZinc
(ounces)(pounds)(ounces)(pounds)(pounds)
Increase (decrease) in consolidated ounces/pounds sold$(890)$(67)$205 $70 $239 
Increase (decrease) in average realized price2,231 89 (15)(1)
Decrease (increase) in treatment and refining charges(40)(37)(6)(33)
$1,301 $(55)$257 $49 $205 
The increase in gold sales during the year ended December 31, 2021, compared to the same period in 2020, is primarily due to higher ounces sold in the current year due to certain operations being placed into care and maintenance or experiencing reduced operations in response to the COVID-19 pandemic during 2020 and overall higher average realized gold prices, partially offset by (i) lower mill throughput at Yanacocha as a result of the ramp down of the mill, (ii) lower production at NGM due to a mechanical failure which resulted in a partial shutdown of the Goldstrike mill from May 2021 through September 2021, which was fully repaired by September 2021, and (iii) lower mill recovery and lower ore grade milled at CC&V.
The increase in copper sales during the year ended December 31, 2021, compared to the same period in 2020, is primarily due to higher average realized copper prices and higher ore grade milled and higher recovery at Boddington, partially offset by lower mill throughput.
The increase in silver sales during the year ended December 31, 2021, compared to the same period in 2020, is primarily due to higher average realized silver prices and higher ounces sold in the current period due to Peñasquito being placed into care and maintenance during a portion of 2020 due to the COVID-19 pandemic.
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The increase in lead sales during the year ended December 31, 2021, compared to the same period in 2020, is primarily due to higher average realized lead prices, partially offset by lower pounds sold at Peñasquito.
The increase in zinc sales during the year ended December 31, 2021, compared to the same period in 2020, are primarily due to higher average realized zinc prices and higher pounds sold in the current period due to Peñasquito being placed into care and maintenance during a portion of 2020 due to the COVID-19 pandemic.
For further discussion regarding changes in volumes, see Results of Consolidated Operations below.
The details of our Costs applicable to sales are set forth below. Refer to Note 4 of the Consolidated Financial Statements for additional information.
Year Ended December 31,Increase
(decrease)
Percent
Change
20212020
Gold$4,628 $4,408 $220 %
Copper143 107 36 34 
Silver332 201 131 65 
Lead76 77 (1)(1)
Zinc256 221 35 16 
$5,435 $5,014 $421 %
Year Ended December 31,Increase
(decrease)
Percent
Change
20202019
Gold$4,408 $4,663 $(255)(5)%
Copper107 145 (38)(26)
Silver201 181 20 11 
Lead77 77 — — 
Zinc221 129 92 71 
$5,014 $5,195 $(181)(3)%
The increase in Costs applicable to sales for gold during the year ended December 31, 2021, compared to the same period in 2020, is primarily due to higher ounces sold in the current year due to certain operations being placed into care and maintenance or experiencing reduced operations in response to the COVID-19 pandemic during 2020 and higher contract labor to compensate for labor shortages, partially offset by higher by-product credits and lower sales volumes at Yanacocha, lower sales volumes at NGM, and the sale of Red Lake during the first quarter of 2020.
The increase in Costs applicable to sales for copper during the year ended December 31, 2021, compared to the same period in 2020, is primarily due to unfavorable Australian dollar foreign currency exchange rate, higher operating costs, higher co-product allocation of costs to copper, higher royalties, and higher pounds sold at Boddington.
The increases in Costs applicable to sales for silver and zinc during the year ended December 31, 2021, compared to the same period in 2020, is primarily due to higher ounces and pounds, respectively, sold in the current year due to Peñasquito being placed into care and maintenance during a portion of 2020 due to the COVID-19 pandemic.
Costs applicable to sales for lead remained consistent during the year ended December 31, 2021, compared to the same period in 2020.
For discussion regarding variations in operations, see Results of Consolidated Operations below.
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The details of our Depreciation and amortization are set forth below. Refer to Note 4 of the Consolidated Financial Statements for additional information.
Year Ended December 31,Increase
(decrease)
Percent
Change
20212020
Gold$1,935 $1,942 $(7)— %
Copper23 19 21 
Silver169 117 52 44 
Lead39 45 (6)(13)
Zinc112 121 (9)(7)
Other45 56 (11)(20)
$2,323 $2,300 $23 %
Year Ended December 31,Increase
(decrease)
Percent
Change
20202019
Gold$1,942 $1,723 $219 13 %
Copper19 31 (12)(39)
Silver117 66 51 77 
Lead45 29 16 55 
Zinc121 55 66 120 
Other56 56 — — 
$2,300 $1,960 $340 17 %

The decrease in Depreciation and amortization for gold during the year ended December 31, 2021, compared to the same period in 2020, is primarily due to lower depreciation at Long Canyon from lower ounces mined and a build in leach pad inventory at NGM, lower production at CC&V as a result of lower leach pad production, lower mill recovery and lower ore grade milled, partially offset by higher ounces produced due to certain operations being placed into care and maintenance or experiencing reduced operations in response to the COVID-19 pandemic during 2020.
The increase in Depreciation and amortization for copper for the year ended December 31, 2021, compared to the same period in 2020, is primarily due to higher sales volumes and higher co-product allocation of costs to copper, partially offset by a longer reserve life at Boddington.
The increase in Depreciation and amortization for silver during the year ended December 31, 2021, compared to the same period in 2020, is primarily due to higher ounces sold in the current year due to Peñasquito being placed into care and maintenance during a portion of 2020 due to the COVID-19 pandemic.
The decreases in Depreciation and amortization for lead and zinc during the year ended December 31, 2021, compared to the same period in 2020, is primarily due to lower co-product allocation of costs to lead and zinc, and lower pounds of lead sold, partially offset by higher pounds of zinc sold in the current year due to Peñasquito being placed into care and maintenance during a portion of 2020 due to the COVID-19 pandemic.
For discussion regarding variations in operations, see Results of Consolidated Operations below.
Exploration expense was $209, $187 and $265 in 2021, 2020 and 2019, respectively. Exploration expense increased in 2021, compared to 2020, primarily due to increase in exploration activities in Australia, North and South America partially offset by decreased exploration activities at NGM due to lower drill rig availability.
Advanced projects, research and development expense includes development project management costs, feasibility studies and other project expenses that do not qualify for capitalization. Advanced projects, research and development expense was $154, $122 and $150 in 2021, 2020 and 2019, respectively. Advanced projects, research and development expense increased in 2021 compared to 2020, primarily due to increased spend associated with full potential programs.
General and administrative expense was $259, $269 and $313 in 2021, 2020 and 2019, respectively. General and administrative expense decreased in 2021, compared to 2020, primarily due to the progression of integration activities for the Newmont Goldcorp transaction and other cost reduction efforts. General and administrative expense as a percentage of Sales was 2.1%, 2.3% and 3.2% for 2021, 2020 and 2019 respectively.
Interest expense, net was $274, $308 and $301 in 2021, 2020 and 2019, respectively. Capitalized interest totaled $38, $24, and $26 in each year, respectively. Interest expense, net decreased in 2021, compared to 2020, primarily due to lower interest rates as a result of the early redemption of the 2021 Senior Notes and debt tenders of the 2022 and 2023 Senior Notes.
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Income and mining tax expense (benefit) was $1,098, $704, and $832 in 2021, 2020 and 2019, respectively. The effective tax rate is driven by a number of factors and the comparability of our income tax expense for the reported periods will be primarily affected by (i) variations in our income before income taxes; (ii) geographic distribution of that income; (iii) impacts of the changes in tax law; (iv) valuation allowances on tax assets; (v) percentage depletion; (vi) fluctuation in the value of the United States dollar and foreign currencies; and (vii) the impact of specific transactions and assessments. As a result, the effective tax rate will fluctuate, sometimes significantly, year to year. This trend is expected to continue in future periods. See Note 12 to the Consolidated Financial Statements for further discussion of income taxes.
Year Ended
December 31, 2021December 31, 2020
Income
(Loss)(1)
Effective
Tax Rate
Income Tax
(Benefit)
Provision
Federal and State Cash Tax (Refund)Mining Cash Tax/(Refund)
Income
(Loss)(1)
Effective
Tax Rate
Income Tax
(Benefit)
Provision
Federal and State Cash Tax (Refund)Mining Cash Tax/(Refund)
Nevada$811 18 %$150 (2)$— $85 $704 17 %$118 (2)$— $37 
CC&V61 (3)— — 125 10 13 (3)— — 
Corporate & Other(625)14 (87)(4)— (198)85 (168)(4)(152)— 
Total US247 27 66 85 631 (6)(37)(152)37 
Australia1,093 34 371 (5)268 102 1,368 25 339 (5)93 77 
Ghana513 37 191 (6)183 — 529 37 195 (6)196 — 
Suriname301 28 84 (7)79 — 339 27 91 (7)39 — 
Peru(2,121)(5)106 (8)148 (8)10 (195)(40)78 (8)51 
Canada101 (22)(22)(9)42 (40)140 (56)(9)(6)
Mexico951 30 284 (10)518 (10)83 532 27 143 (10)40 10 
Argentina(14)(71)10 (11)— — (47)134 (63)(11)— — 
Other Foreign37 22 — — 26 54 14 — — 
Consolidated$1,108 99 %(12)$1,098 $1,212 $322 $3,143 22 %(12)$704 $276 $124 
____________________________
(1)Represents income (loss) from continuing operations by geographic location before income taxes and equity in affiliates. These amounts will not reconcile to the Segment Information for the reasons stated in Note 4.
(2)Includes deduction for percentage depletion of $(62) and $(63) and mining taxes net of associated federal benefit of $40 and $31, respectively. Nevada includes the Company’s 38.5% interest in NGM.
(3)Includes deduction for percentage depletion of $(9) and $(14), respectively.
(4)Includes valuation allowance of $(128) and $(86), uncertain tax position reserve adjustment of $2 and $(2), and expiration of capital losses of $152 and $—, respectively.
(5)Includes benefit recognized on the sale of Kalgoorlie and related tax capital loss of $— and $(353), mining taxes net of associated federal benefit of $65 and $73, valuation allowance of $(16) and $205, and tax impacts from the exposure to fluctuations in foreign currency of $(1) and $5, respectively.
(6)Includes uncertain tax position reserve adjustment of $12 and $16, respectively.
(7)Includes valuation allowance of $1 and $1, and uncertain tax position reserve adjustment of $1 and $—, respectively.
(8)Includes mining taxes net of associated federal benefit of $8 and $3, valuation allowance of $636 and $81, uncertain tax position reserve adjustment of $(2) and $1, tax impacts from the exposure to fluctuations in foreign currency of $21 and $22, and expense related to prior year tax disputes of $(1) and $(7), respectively. Tax expense of $55 and $29, respectively, was recognized for the Yanacocha Tax Dispute. The federal and state cash tax payment includes $80 paid for the Yanacocha Tax Dispute.
(9)Includes mining tax net of associated benefit of $14 and $11, valuation allowance of $(62) and $(9), uncertain tax position reserve adjustment of $— and $(51), and tax impacts from the exposure to fluctuations in foreign currency of $2 and $(1), respectively.
(10)Includes mining tax net of associated federal benefit of $47 and $33, valuation allowance of $(17) and $(12), uncertain tax position reserve adjustment of $31 and $15, and tax impact from the exposure to fluctuations in foreign currency of $(44) and $(58), respectively. The federal and state cash tax payment includes an $76 settlement payment to the Mexican Tax Authority.
(11)Includes tax impacts from the exposure to fluctuations in foreign currency of $3 and $(65) and impacts of legislative rate changes of $11 and $10, respectively.
(12)The consolidated effective income tax rate is a function of the combined effective tax rates for the jurisdictions in which we operate. Variations in the relative proportions of jurisdictional income could result in fluctuations to our combined effective income tax rate.
Recently Enacted Legislation. During the third quarter of 2020, the Nevada legislature passed three resolutions proposing amendments to the Nevada Constitution to modify provisions regarding the Net Proceeds of Minerals tax. During the second quarter of 2021, the Nevada legislature enacted a new excise tax on revenue from gold and silver sales and as a result will not be making modifications to the Net Proceeds of Minerals tax. See the Nevada Results of Operations for additional information.
During the fourth quarter of 2021, Mexico approved legislation referred to as the 2022 Tax Reform Bill. This legislation grants the taxing authority (Servicio de Administracion Tributaria or SAT) additional powers to enforce taxpayer compliance including greater oversight and review rights, increased reporting requirements, and harsher penalties for violations of tax laws. The tax reform is effective January 1, 2022 and includes additional transfer pricing rules, thin capitalization rules, provisions related to financing
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transactions, and restrictions on certain corporate restructuring transactions. This legislation is not expected to have a material impact on the Company’s operations.
Governments in various jurisdictions in which the Company operates passed legislation in response to the COVID-19 pandemic. During the second quarter of 2021, the statutory Federal tax rate in Argentina was increased from 25% to 35%, effective January 1, 2021. The impact of the rate change on the deferred tax balance has been included in the tax expense.
Equity income (loss) of affiliates was $166, $189 and $95 in 2021, 2020 and 2019, respectively. Equity income (loss) of affiliates decreased in 2021, compared to 2020, primarily due to income of $166 from the Pueblo Viejo mine. Earnings before income taxes and depreciation and amortization related to the Pueblo Viejo Mine (“Pueblo Viejo EBITDA”) was $420, $434 and $245 for the years ended December 31, 2021, 2020 and 2019, respectively. Pueblo Viejo EBITDA is a non-GAAP financial measure. See “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis.
Refer to the Notes of the Consolidated Financial Statements for explanations of other financial statement line items.
Results of Consolidated Operations
Newmont has developed gold equivalent ounces (“GEO”) metrics to provide a comparable basis for analysis and understanding of our operations and performance related to copper, silver, lead and zinc. Gold equivalent ounces are calculated as pounds or ounces produced multiplied by the ratio of the other metals’ price to the gold price, using the metal prices in the table below:
GoldCopperSilverLeadZinc
(ounce)(pound)(ounce)(pound)(pound)
2021 GEO Price$1,200 $2.75 $22.00 $0.90 $1.05 
2020 GEO Price$1,200 $2.75 $16.00 $0.95 $1.20 
2019 GEO Price$1,200 $2.75 $15.00 $0.90 $1.05 
Our mines continued to operate with robust controls, including heightened levels of health screening and testing to protect both our workforce and the local communities in which we operate as a result of the COVID-19 pandemic. We have adopted a risk-based approach to business travel, are providing flexible and remote working plans for employees and are maintaining effective contact tracing procedures and "social distancing" protocols. For the year ended December 31, 2021, we incurred $87 of incremental direct costs related to our response to the COVID-19 pandemic, included in Other expense, net, as a result of these and other actions taken to protect our employees and operations, and to support the local communities in which we operate, of which, $82 is included in All-in sustaining costs. For the year ended December 31, 2020, we incurred $92 of incremental direct costs related to our response to the COVID-19 pandemic, included in Other expense, net, and all were excluded from All-in sustaining costs. All-in sustaining costs is a non-GAAP financial measure. See “Non-GAAP Financial Measures” within Part I, Item 2, Management's Discussion and Analysis. For further information regarding costs related to our response to the COVID-19 pandemic, refer to Note 9 of the Consolidated Financial Statements.
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Gold or Other Metals Produced
Costs Applicable to Sales (1)
Depreciation and Amortization (2)
All-In Sustaining Costs (3)(4)
202120202019202120202019202120202019202120202019
Year Ended December 31,
Gold(ounces in thousands)($ per ounce sold)($ per ounce sold)($ per ounce sold)
North America1,598 1,457 1,036 $796 $773 $883 $363 $385 $356 $1,016 $1,049 $1,187 
South America971 1,017 1,385 832 811 646 363 358 234 1,130 1,100 814 
Australia1,181 1,165 1,431 755 715 734 175 182 164 1,002 964 908 
Africa 862 851 1,065 799 713 597 307 311 295 1,022 890 791 
Nevada1,272 1,334 1,475 755 757 748 432 434 340 918 920 935 
Total/Weighted-Average (5)
5,884 5,824 6,392 $785 $756 $721 $336 $343 $275 $1,062 $1,045 $966 
Attributable to Newmont5,646 5,543 6,004 
Gold equivalent ounces - other metals(ounces in thousands)($ per ounce sold)($ per ounce sold)($ per ounce sold)
North America (6)
1,089 893 443 $603 $535 $886 $291 $302 $342 $826 $828 $1,339 
Australia (7)
163 128 146 902 837 803 147 152 151 1,112 1,080 954 
Nevada (8)
— — 35 — — 750 — — 243 — — 894 
Total/Weighted-Average (5)
1,252 1,021 624 $640 $571 $858 $273 $284 $291 $900 $858 $1,222 
Attributable gold from equity method investments (9)
(ounces in thousands)
Pueblo Viejo (40%)325 362 287 
____________________________
(1)Excludes Depreciation and amortization and Reclamation and remediation.
(2)For the year ended December 31, 2021, Depreciation and amortization included $3 in care and maintenance costs at Australia. For the year ended December 31, 2020, Depreciation and amortization included $51 and $37 in care and maintenance costs at North America and South America, respectively.
(3)All-in sustaining costs is a non-GAAP financial measure. See “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis. For the year ended December 31, 2021, All-in sustaining costs includes $8 in care and maintenance costs recorded in Care and maintenance at Australia. For the year ended December 31, 2020, All-in sustaining costs includes $92 and $86 in care and maintenance costs recorded in Care and maintenance at North America and South America, respectively.
(4)For the year ended December 31, 2021, All-in sustaining costs include incremental direct costs related to our response to the COVID-19 pandemic, recorded in Other expense, net of $23, $46, $8, and $5 at North America, South America, Australia, and Africa, respectively. For the year ended December 31, 2020, incremental COVID-19 costs were excluded from All-in sustaining costs.
(5)All-in sustaining costs and Depreciation and amortization include expense for other regional projects.
(6)For the year ended December 31, 2021, the Peñasquito mine in North America produced 31,375 thousand ounces of silver, 177 million pounds of lead and 435 million pounds of zinc. For the year ended December 31, 2020, the Peñasquito mine in North America produced 27,801 thousand ounces of silver, 179 million pounds of lead and 381 million pounds of zinc. For the year ended December 31, 2019, Peñasquito produced 15,860 thousand ounces of silver, 108 million pounds of lead and 187 million pounds of zinc. The Peñasquito mine in North America was acquired during the second quarter of 2019 as part of the Newmont Goldcorp transaction.
(7)For the year ended December 31, 2021, 2020 and 2019, the Boddington mine in Australia produced 71 million, 56 million and 64 million pounds of copper, respectively.
(8)For the year ended December 31, 2019, the Phoenix mine in Nevada produced 15 million pounds of copper. The Phoenix mine was contributed to NGM, effective July 1, 2019, at which point copper became a by-product.
(9)Income and expenses of equity method investments are included in Equity income (loss) of affiliates. Refer to Note 16 to the Consolidated Financial Statements for further discussion of our equity method investments.
2021 compared to 2020
Consolidated gold production increased 1% primarily due to higher mill recovery, a draw-down of in-circuit inventory and higher throughput as a result of several mines being placed under care and maintenance in the prior year as a result of on-going COVID-19 restrictions. Consolidated gold equivalent ounces – other metals production increased 23% primarily due to higher throughput as a result of Peñasquito in North America being placed under care and maintenance in the prior year as a result of on-going COVID-19 restrictions and higher mill recovery.
Costs applicable to sales per consolidated gold ounce increased 4% primarily due to higher contractor costs at several mines, lower gold ounces sold at Porcupine in North America, higher direct operating costs as a result of COVID-19 restrictions at Cerro Negro in South America and an unfavorable strip ratio as a result of mine sequencing and higher power and diesel costs at Ahafo in Africa. Costs applicable to sales per consolidated gold equivalent ounce – other metals increased 12% primarily due to higher direct operating costs at Peñasquito in North America as a result of the mine being placed under care and maintenance in the prior year.
Depreciation and amortization per consolidated gold ounce decreased 2% primarily due to higher gold ounces sold as a result of several sites being placed on care and maintenance in the prior year. Depreciation and amortization per consolidated gold equivalent
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ounce – other metals decreased 4% primarily due to higher gold equivalent ounces - other metals sold and a longer reserve life at Boddington in Australia.
All-in sustaining costs per consolidated gold ounce increased 2% primarily due to higher costs applicable to sales per gold ounce and higher sustaining capital costs. All-in sustaining costs per consolidated gold equivalent ounce – other metals increased 5% primarily due to higher costs applicable to sales per gold equivalent ounce – other metals, partially offset by lower treatment and refining costs.
North America Operations
Gold or Other Metals Produced
Costs Applicable to Sales (1)
Depreciation and Amortization (2)
All-In Sustaining Costs (3)(4)
202120202019202120202019202120202019202120202019
Year Ended December 31,
Gold(ounces in thousands)($ per ounce sold)($ per ounce sold)($ per ounce sold)
CC&V220 272 322 $1,080 $911 $911 $298 $295 $299 $1,338 $1,125 $1,071 
Red Lake (5)
— 38 113 — 1,066 1,218 — 44 448 — 1,182 1,570 
Musselwhite152 100 1,018 1,206 2,248 520 644 4,912 1,335 1,838 8,174 
Porcupine287 319 223 940 765 786 319 341 281 1,152 935 935 
Éléonore253 202 246 960 868 809 562 529 302 1,256 1,248 1,013 
Peñasquito686 526 129 549 560 803 279 330 301 702 806 1,100 
Total/Weighted-Average (6)
1,598 1,457 1,036 $796 $773 $883 $363 $385 $356 $1,016 $1,049 $1,187 
Gold equivalent ounces - other metals(ounces in thousands)($ per ounce sold)($ per ounce sold)($ per ounce sold)
Peñasquito (7)
1,089 893 443 $603 $535 886 $291 $302 $342 $824 $828 $1,339 
Total/Weighted-Average (6)
1,089 893 443 $603 $535 886 $291 $302 $342 $826 $828 $1,339 
____________________________
(1)Excludes Depreciation and amortization and Reclamation and remediation.
(2)For the year ended December 31, 2021, Depreciation and amortization includes no care and maintenance costs recorded at North America. For the year ended December 31, 2020, Depreciation and amortization includes $7, $16 and $28 in care and maintenance costs at Musselwhite, Éléonore and Peñasquito, respectively.
(3)All-in sustaining costs is a non-GAAP financial measure. See “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis. For the year ended December 31, 2021, All-in sustaining costs includes no care and maintenance costs recorded at North America. For the year ended December 31, 2020, All-in sustaining costs includes $28, $26 and $38 in care and maintenance costs recorded in Care and maintenance at Musselwhite, Éléonore and Peñasquito, respectively.
(4)For the year ended December 31, 2021, All-in sustaining costs include $23, in incremental direct costs related to our response to the COVID-19 pandemic, recorded in Other expense, net. For the year ended December 31, 2020, incremental COVID-19 incremental costs were excluded from All-in sustaining costs.
(5)The sale of the Red Lake complex to Evolution closed on March 31, 2020. Refer to Note 10 for more information on asset sales.
(6)All-in sustaining costs and Depreciation and amortization include expense for other regional projects.
(7)For the year ended December 31, 2021, Peñasquito produced 31,375 thousand ounces of silver, 177 million pounds of lead and 435 million pounds of zinc. For the year ended December 31, 2020, Peñasquito produced 27,801 thousand ounces of silver, 179 million pounds of lead and 381 million pounds of zinc. For the year ended December 31, 2019, Peñasquito produced 15,860 thousand ounces of silver, 108 million pounds of lead and 187 million pounds of zinc. The Peñasquito mine was acquired during the second quarter of 2019 as part of the Newmont Goldcorp transaction.
2021 compared to 2020
CC&V, USA. Gold production decreased 19% primarily driven by lower ore grades milled, lower mill recoveries and lower leach pad recoveries. Costs applicable to sales per gold ounce increased 19% primarily due to lower gold ounces sold. Depreciation and amortization per gold ounce increased 1% primarily due to lower gold ounces sold, partially offset by lower depreciation rates due to a longer mine life. All-in sustaining costs per gold ounce increased 19% primarily due to higher costs applicable to sales per gold ounce.
Musselwhite, Canada. Gold production increased 52% primarily due to the mine being placed under care and maintenance in the prior year as a result of on-going COVID-19 restrictions and higher ore grades milled. Costs applicable to sales per gold ounce decreased 16% primarily driven by higher gold ounces sold. Depreciation and amortization per gold ounce decreased 19% primarily driven by higher gold ounces sold. All-in sustaining costs per gold ounce decreased 27% primarily due to lower costs applicable to sales per gold ounce and care and maintenance costs in the prior year.
Porcupine, Canada. Gold production decreased 10% primarily due to lower mill throughput and lower ore grades milled. Costs applicable to sales per gold ounce increased 23% primarily due to higher contractor costs and lower gold ounces sold. Depreciation and amortization per gold ounce decreased 6% primarily due to a longer mine life. All-in sustaining costs per gold ounce increased 23% primarily due to higher costs applicable to sales per gold ounce and higher sustaining capital spend.
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Éléonore, Canada. Gold production increased 25% primarily due to higher throughput as a result of the mine being placed under care and maintenance in the prior year as a result of on-going COVID-19 restrictions and higher ore grade milled. Costs applicable to sales per gold ounce increased 11% primarily due to higher contract labor to compensate for labor shortages, partially offset by higher gold ounces sold. Depreciation and amortization per gold ounce increased 6% primarily due to the commissioning of the Lower Mine Material Handling System, partially offset by higher gold ounces sold. All-in sustaining costs per gold ounce increased 1% primarily driven by higher costs applicable to sales per gold ounce and higher sustaining capital spend, partially offset by care and maintenance costs in the prior year.
Peñasquito, Mexico. Gold production increased 30% and gold equivalent ounces – other metals production increased 22% primarily due to higher throughput as a result of the mine being placed under care and maintenance in the prior year as a result of on-going COVID-19 restrictions. Costs applicable to sales per gold ounce decreased 2% primarily driven by higher gold ounces sold. Costs applicable to sales per gold equivalent ounce – other metals increased 13% primarily due to higher direct operating costs as the mine was placed in care and maintenance in the prior year, partially offset by higher gold equivalent ounces - other metals sold. Depreciation and amortization per gold ounce decreased 15% primarily due to higher gold ounces sold, partially offset by the impact of the mine being placed on care and maintenance in the prior year. Depreciation and amortization per gold equivalent ounce – other metals decreased 4% primarily due to higher gold equivalent - other metals sold, partially offset by the site being placed on care and maintenance in the prior year. All-in sustaining costs per gold ounce decreased 13% primarily due to lower costs applicable to sales per gold ounce and care and maintenance costs in the prior year. All-in sustaining costs per gold equivalent ounce – other metals was in line with prior year, with higher costs applicable to sales per gold equivalent ounce being offset by lower treatment and refining costs and lower sustaining capital spend.
South America Operations
Gold or Other Metals Produced
Costs Applicable to Sales (1)
Depreciation and Amortization (2)
All-In Sustaining Costs (3)(4)
202120202019202120202019202120202019202120202019
Year Ended December 31,(ounces in thousands)($ per ounce sold)($ per ounce sold)($ per ounce sold)
Yanacocha264 340 527 $885 $1,019 $756 $421 $362 $213 $1,355 $1,414 $959 
Merian437 461 524 751 705 565 225 219 177 895 813 689 
Cerro Negro270 216 334 912 718 603 513 606 317 1,247 1,147 753 
Total / Weighted Average (5)
971 1,017 1,385 $832 $811 $646 $363 $358 $234 $1,130 $1,100 $814 
Yanacocha (48.65%)(129)(166)(257)
Merian (25.00%)(109)(115)(131)
Attributable to Newmont733 736 997 
Attributable gold from equity method investments (6)
(ounces in thousands)
Pueblo Viejo (40%)325 362 287 
___________________________
(1)Excludes Depreciation and amortization and Reclamation and remediation.
(2)For the year ended December 31, 2021, Depreciation and amortization includes no care and maintenance costs recorded at South America. For the year ended December 31, 2020, Depreciation and amortization includes $7 and $30 in care and maintenance costs at Yanacocha and Cerro Negro, respectively.
(3)All-in sustaining costs is a non-GAAP financial measure. See “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis. For the year ended December 31, 2021, All-in sustaining costs includes no care and maintenance costs recorded at South America. For the year ended December 31, 2020, All-in sustaining costs includes $27, $56 and $3 in care and maintenance costs recorded in Care and maintenance at Yanacocha, Cerro Negro and Other South America, respectively.
(4)For the year ended December 31, 2021, All-in sustaining costs include $46, in incremental direct costs related to our response to the COVID-19 pandemic, recorded in Other expense, net. For the year ended December 31, 2020, incremental COVID-19 incremental costs were excluded from All-in sustaining costs.
(5)All-in sustaining costs and Depreciation and amortization include expense for other regional projects.
(6)Income and expenses of equity method investments are included in Equity income (loss) of affiliates. Refer to Note 16 to our Consolidated Financial Statements for further discussion of our equity method investments.
2021 compared to 2020
Yanacocha, Peru. Gold production decreased 22% primarily due to lower mill throughput as a result of the ramp down of the mill, partially offset by higher leach pad production as a result of higher leach recoveries. Costs applicable to sales per gold ounce decreased 13% primarily due to higher by-product credits as a result of the timing of silver shipments that were previously delayed from the prior year due to COVID-19. Depreciation and amortization per gold ounce increased 16% primarily due to lower gold ounces sold and the amortization of the remaining asset retirement costs at La Quinua, as production from this leach pad was completed during the year. All-in sustaining costs per gold ounce decreased 4% primarily due to lower costs applicable to sales per gold ounce
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and lower sustaining capital spend, partially offset by higher reclamation costs and COVID-19 costs, which were excluded from all-in sustaining costs in the prior year.
Merian, Suriname. Gold production decreased 5% primarily due to lower ore grade milled and a build up of mill-in-circuit inventory, partially offset by higher mill throughput and higher recovery. Costs applicable to sales per gold ounce increased 7% primarily due to higher direct operating costs. Depreciation and amortization per gold ounce increased 3% primarily due to asset additions during the year and lower gold ounces sold. All-in sustaining costs per gold ounce increased 10% primarily due to higher costs applicable to sales per gold ounce, COVID-19 costs and higher sustaining capital spend.
Cerro Negro, Argentina. Gold production increased 25% primarily due to higher mill throughput as a result of the mine being placed under care and maintenance in response to the COVID-19 pandemic during 2020, partially offset by lower grade milled. Costs applicable to sales per gold ounce increased 27% primarily due to higher direct operating costs as a result of on-going COVID-19 restrictions, partially offset by higher gold ounces sold. Depreciation and amortization per gold ounce decreased 15% primarily due to higher gold ounces sold and lower depreciation and amortization rates. All-in sustaining costs per gold ounce increased 9% primarily due to higher costs applicable to sales per gold ounce, higher sustaining capital spend and COVID-19 costs, partially offset by care and maintenance costs in the prior year.
Pueblo Viejo, Dominican Republic. Attributable gold production decreased 10% primarily due to lower ore grade milled and lower recovery, partially offset by higher mill throughput. Refer to Note 16 to our Consolidated Financial Statements for further discussion of our equity method investments.
Australia Operations
Gold or Other Metals Produced
Costs Applicable to Sales (1)
Depreciation and Amortization (2)
All-In Sustaining Costs (3)(4)
202120202019202120202019202120202019202120202019
Year Ended December 31,
Gold(ounces in thousands)($ per ounce sold)($ per ounce sold)($ per ounce sold)
Boddington696 670 703 $887 $866 $809 $145 $152 $149 $1,083 $1,094 $942 
Tanami485 495 500 570 511 531 205 208 192 855 745 717 
Kalgoorlie (5)
— — 228 — — 948 — — 116 — — 1,114 
Total/Weighted-Average (6)
1,181 1,165 1,431 $755 $715 $734 $175 $182 $164 $1,002 $964 $908 
Gold equivalent ounces - other metals(ounces in thousands)($ per ounce sold)($ per ounce sold)($ per ounce sold)
Boddington (7)
163 128 146 $902 $837 $803 $147 $152 $151 $1,098 $1,080 $954 
Total/Weighted-Average (6)
163 128 146 $902 $837 $803 $147 $152 $151 $1,112 $1,080 $954 
____________________________
(1)Excludes Depreciation and amortization and Reclamation and remediation.
(2)For the years ended December 31, 2021 and 2020, Depreciation and amortization includes $3 and $—, respectively at Tanami in care and maintenance costs.
(3)All-in sustaining costs is a non-GAAP financial measure. See “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis. For the years ended December 31, 2021 and 2020, All-in sustaining costs included $8 and $—, respectively, in care and maintenance costs recorded in Care and maintenance at Tanami.
(4)For the year ended December 31, 2021, All-in sustaining costs include $8 in incremental direct costs related to our response to the COVID-19 pandemic, recorded in Other expense, net. For the year ended December 31, 2020, incremental COVID-19 costs were excluded from All-in sustaining costs.
(5)The sale of our 50% interest in Kalgoorlie was completed on January 2, 2020. Refer to Note 10 for more information on asset sales.
(6)All-in sustaining costs and Depreciation and amortization include expense for other regional projects.
(7)For the years ended December 31, 2021, 2020 and 2019, Boddington produced 71 million, 56 million and 64 million pounds of copper, respectively.
2021 compared to 2020
Boddington, Australia. Gold production increased 4% primarily due to higher ore grade milled, partially offset by lower recovery and lower mill throughput. Gold equivalent ounces – other metals production increased 27% primarily due to higher ore grade milled and higher recovery, partially offset by lower mill throughput. Costs applicable to sales per gold ounce increased 2% primarily due to an unfavorable Australian dollar foreign currency exchange rate and higher operating costs, partially offset by higher gold ounces sold and lower co-product allocation of costs to gold. Costs applicable to sales per gold equivalent ounce – other metals increased 8% primarily due to an unfavorable Australian dollar foreign currency exchange rate, higher operating costs, higher co-product allocation of costs to copper and higher royalties, partially offset by higher gold equivalent ounces - other metals sold. Depreciation and amortization per gold ounce decreased 5% primarily due to a longer mine life, higher gold ounces sold and a lower co-product allocation of costs to gold. Depreciation and amortization per gold equivalent ounce – other metals decreased 3% primarily due to a longer mine life and higher gold equivalent ounces - other metals sold, partially offset by higher co-product allocation of costs to copper. All-in sustaining costs per gold ounce decreased 1% primarily due to lower sustaining capital spend, partially offset by higher
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costs applicable to sales per gold ounce. All-in sustaining costs per gold equivalent ounce – other metals increased 2% primarily due to higher costs applicable to sales per gold-equivalent ounce – other metals, partially offset by lower sustaining capital spend.
Tanami, Australia. Gold production decreased 2% primarily due to lower ore grade milled and lower throughput as the mine was placed under care and maintenance during July 2021 as a result of COVID-19 restrictions. Costs applicable to sales per gold ounce increased 12% primarily due to an unfavorable Australian dollar foreign currency exchange rate and lower gold ounces sold, partially offset by lower paste backfill spend. Depreciation and amortization per gold ounce decreased 1% primarily due to a longer reserve life, partially offset by lower gold ounces sold and new asset additions. All-in sustaining costs per gold ounce increased 15% primarily due to higher costs applicable to sales per gold ounce and higher sustaining capital spend.
Africa Operations
Gold or Other Metals Produced
Costs Applicable to Sales (1)
Depreciation and Amortization
All-In Sustaining Costs (2)(3)
202120202019202120202019202120202019202120202019
Year Ended December 31,(ounces in thousands)($ per ounce sold)($ per ounce sold)($ per ounce sold)
Ahafo481 480 643 $884 $787 $624 $298 $304 $254 $1,084 $980 $820 
Akyem381 371 422 691 621 558 318 318 356 913 757 718 
Total / Weighted Average (4)
862 851 1,065 $799 $713 $597 $307 $311 $295 $1,022 $890 $791 
____________________________
(1)Excludes Depreciation and amortization and Reclamation and remediation.
(2)All-in sustaining costs is a non-GAAP financial measure. See “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis.
(3)For the year ended December 31, 2021, All-in sustaining costs include $5 in incremental direct costs related to the COVID-19 pandemic, recorded in Other expense, net. For the year ended December 31, 2020, incremental COVID-19 costs were excluded from All-in sustaining costs.
(4)All-in sustaining costs and Depreciation and amortization include expense for other regional projects.
2021 compared to 2020
Ahafo, Ghana. Gold production was in line with prior year. Costs applicable to sales per gold ounce increased 12% primarily due to an unfavorable strip ratio as a result of mine sequencing and higher power and diesel costs, partially offset by lower mining consumables spend. Depreciation and amortization per gold ounce decreased 2% primarily due to higher ounces sold. All-in sustaining costs per gold ounce increased 11% primarily due to higher costs applicable to sales per gold ounce, higher exploration expense and COVID-19 costs.
Akyem, Ghana. Gold production increased 3% primarily due to higher ore grade milled, partially offset by lower mill throughput, lower recovery and a build-up of in-circuit inventory. Costs applicable to sales per gold ounce increased 11% primarily due to higher royalty payments, higher diesel costs and higher maintenance costs, partially offset by lower service costs. Depreciation and amortization per gold ounce was in line with prior year. All-in sustaining costs per gold ounce increased 21% primarily due to higher costs applicable to sales per gold ounce, higher sustaining capital costs and higher reclamation costs.
Nevada Operations
Gold or Other Metals Produced
Costs Applicable to Sales (1)
Depreciation and Amortization
All-In Sustaining Costs (2)
202120202019202120202019202120202019202120202019
Year Ended December 31,
Gold(ounces in thousands)($ per ounce sold)($ per ounce sold)($ per ounce sold)
NGM1,272 1,334 710 $755 $757 $712 $432 $434 $430 $918 $920 $901 
Carlin— — 404 — — 878 — — 261 — — 1,076 
Phoenix — — 96 — — 981 — — 281 — — 1,149 
Twin Creeks— — 169 — — 638 — — 171 — — 800 
Long Canyon— — 96 — — 376 — — 377 — — 466 
Total/Weighted-Average (3)
1,272 1,334 1,475 $755 $757 $748 $432 $434 $340 $918 $920 $935 
Gold equivalent ounces - other metals(ounces in thousands)($ per ounce sold)($ per ounce sold)($ per ounce sold)
Phoenix (4)
— — 35 $— $— $750 $— $— $243 $— $— $894 
____________________________
(1)Excludes Depreciation and amortization and Reclamation and remediation.
(2)All-in sustaining costs is a non-GAAP financial measure. See “Non-GAAP Financial Measures” within Part II, Item 7, Management's Discussion and Analysis.
(3)All-in sustaining costs and Depreciation and amortization include expense for other regional projects.
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(4)For the year ended December 31, 2019, the Phoenix mine in Nevada produced 15 million pounds of copper. The Phoenix mine site was contributed to NGM, effective July 1, 2019, at which point copper became a by-product.
2021 compared to 2020
NGM. Attributable gold production at NGM decreased 5% primarily due to lower mill throughput at Carlin as a result of lower availability of the Goldstrike mill and ore blending and lower mill throughput, lower grade milled and the sale of the Lone Tree property at Phoenix. This was partially offset by higher ore grades milled and higher leach pad recoveries at Cortez. Costs applicable to sales per gold ounce, depreciation and amortization per gold ounce and all-in sustaining costs per gold ounce were in line with prior year.
Foreign Currency Exchange Rates
Our foreign operations sell their gold, copper, silver, lead and zinc production based on U.S. dollar metal prices. Fluctuations in foreign currency exchange rates do not have a material impact on our revenue since gold, copper, silver, lead and zinc are sold throughout the world in U.S. dollars. Despite selling gold and silver in London, we have no exposure to the euro or the British pound.
Foreign currency exchange rates can increase or decrease profits to the extent costs are paid in foreign currencies, including the Australian dollar, the Mexican peso, the Canadian dollar, the Argentine peso, the Peruvian sol, the Surinamese dollar and the Ghanaian cedi. In 2021, approximately 50% of Costs applicable to sales were paid in currencies other than the U.S. dollar as follows:
Year Ended
December 31, 2021
Australian Dollar17 %
Mexican Peso13 %
Canadian Dollar12 %
Argentine Peso%
Peruvian Sol%
Surinamese Dollar%
Ghanaian Cedi— %
Variations in the local currency exchange rates in relation to the U.S. dollar at our foreign mining operations increased Costs applicable to sales by $4 per ounce in 2021, compared to 2020, primarily in Australia and Canada.
Our Cerro Negro mine, located in Argentina, is a U.S. dollar functional currency entity. Argentina has been considered a hyperinflationary environment with a cumulative inflation rate of over 100% for the last three years. In recent years, Argentina’s central bank enacted a number of foreign currency controls in an effort to stabilize the local currency, including requiring the Company to convert U.S. dollar proceeds from metal sales to local currency within 60 days from shipment date or five business days from receipt of cash, whichever happens first, as well as restricting payments to foreign-related entities denominated in foreign currency, such as dividends or distributions to the parent and related companies and royalties and other payments to foreign beneficiaries. These restrictions directly impact Cerro Negro's ability to pay principal portions of intercompany debt to the Company. We continue to monitor the foreign currency exposure risk and the limitations of repatriating cash to the United States. Currently, these currency controls are not expected to have a material impact on our financial statements.
Our Merian mine, located in the country of Suriname, is a U.S. dollar functional currency entity. Suriname has experienced significant inflation over the last three years and has a highly inflationary economy. In 2021, the Central Bank took steps to stabilize the local currency, while the government introduced new legislation to narrow the gap between government revenues and spending. The measures to increase government revenue mainly consist of tax increases; however, Newmont and the Republic of Suriname have a Mineral Agreement in place that supersedes such measures. The Central Bank of Suriname recently adopted a controlled floating rate system, which resulted in a concurrent devaluation of the Surinamese dollar. The majority of Merian’s activity has historically been denominated in U.S. dollars due to which the devaluation of the Surinamese dollar has resulted in an immaterial impact on our financial statements. Therefore, future devaluation of the Surinamese dollar is not expected to have a material impact on our financial statements.
Liquidity and Capital Resources
Liquidity Overview
We have a disciplined cash allocation strategy of maintaining financial flexibility to execute our capital priorities and generate long-term value for our shareholders. Consistent with that strategy, we aim to self-fund development projects and make strategic partnerships focused on profitable growth, while reducing our debt and returning cash to stockholders through dividends and share repurchases.
The COVID-19 pandemic has had a material impact on the global economy, the scale and duration of which remain uncertain. Depending on the duration and extent of the impact of the COVID-19 pandemic, sites could be placed into care and maintenance;
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transportation industry disruptions could occur, including limitations on shipping produced metals; refineries or smelters could be temporarily closed; our supply chain could be disrupted; or we could incur credit related losses of certain financial assets, which could materially impact the Company’s results of operations, cash flows and financial condition. As of December 31, 2021, we believe our available liquidity allows us to manage the near-term impacts of the COVID-19 pandemic on our business.
At December 31, 2021, the Company had $4,992 in Cash and cash equivalents, of which $345 was attributable to noncontrolling interests primarily related to our Peru and Suriname operations. The majority of our cash and cash equivalents are invested in a variety of highly liquid investments with original maturities of three months or less. These investments are viewed by management as low-risk investments on which there are little to no restrictions regarding our ability to access the underlying cash to fund our operations as necessary. While we have some investments in prime money market funds at times, these are classified as cash and cash equivalents; however, we continually monitor the need for reclassification under the SEC requirements for money market funds, and the potential that the shares of such funds could have a net asset value of less than one dollar. We believe that our liquidity and capital resources are adequate to fund our operations and corporate activities.
At December 31, 2021, $1,421 of Cash and cash equivalents was held in foreign subsidiaries and is primarily held in U.S. dollar denominated accounts with the remainder in foreign currencies readily convertible to U.S. dollars. Cash and cash equivalents denominated in Argentine Peso are subject to regulatory restrictions. See Foreign Currency Exchange Rates above for further information. At December 31, 2021, $1,161 in consolidated cash and cash equivalents ($824 attributable to Newmont) was held at certain foreign subsidiaries that, if repatriated, may be subject to withholding taxes. We expect that there would be no additional tax burden upon repatriation after considering the cash cost associated with any potential withholding taxes.
We believe our existing consolidated Cash and cash equivalents, available capacity on our revolving credit facility, and cash generated from continuing operations will be adequate to satisfy working capital needs, fund future growth, meet debt obligations, pay dividends, complete our stock repurchase program and meet other liquidity requirements for the foreseeable future. At December 31, 2021, our borrowing capacity on our revolving credit facility was $3,000 and we had no borrowings outstanding under the revolving credit facility. We continue to remain compliant with covenants and there have been no impacts to-date, nor do we anticipate any negative impacts from COVID-19, on our ability to access funds available on this facility.
Our financial position was as follows:
At December 31,
2021
At December 31,
2020
Debt$5,652 $6,031 
Lease and other financing obligations650 671 
Less: Cash and cash equivalents(4,992)(5,540)
Net debt$1,310 $1,162 
Borrowing capacity on revolving credit facility$3,000 $2,928 
Total liquidity (1)
$7,992 $8,468 
____________________________
(1)Total liquidity is calculated as the total of our Cash and cash equivalents and the borrowing capacity on our revolving credit facility.
Cash Flows
Net cash provided by (used in) operating activities of continuing operations was $4,266 in 2021, a decrease in cash provided of $624 from the year ended December 31, 2020, primarily due to higher tax payments, partially offset by higher average realized metal prices.
Net cash provided by (used in) investing activities of continuing operations was $(1,868) in 2021, an increase in cash used of $2,034 from the year ended December 31, 2020, primarily due to proceeds from the sales of Kalgoorlie, Red Lake and Continental Gold in 2020, the acquisition of GT Gold in 2021, and higher capital expenditures primarily related to development projects in 2021 (see below for further information on the Company's capital expenditures).
Net cash provided by (used in) investing activities of discontinued operations was $— in 2021, a decrease in cash used of $75 from the year ended December 31, 2020, due to the 2020 payment for the option to acquire mining and mineral rights subject to the Holt royalty obligation as part of the Kirkland Agreement. See Note 1 to our Consolidated Financial Statements for further information.
Net cash provided by (used in) financing activities was $(2,958) in 2021, an increase in cash used of $1,278 from the year ended December 31, 2020, primarily due to higher dividends and debt payments in 2021.
Capital Resources
In February 2022, the Board declared a dividend of $0.55 per share on fourth quarter 2021 earnings, determined under the dividend framework established and approved by the Board in 2020 to share incremental free cash flow with shareholders at higher gold prices. The framework returns 40 to 60 percent of incremental attributable free cash flow to shareholders that is generated above
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a $1,200 per ounce gold price. This framework is non-binding and is periodically reviewed and reassessed by the Board of Directors. The declaration and payment of future dividends remains at the full discretion of the Board and will depend on the Company’s financial results, cash requirements, future prospects and other factors deemed relevant by the Board.
In January 2021, the Company announced that the Board of Directors authorized a new stock repurchase program for up to $1 billion of common stock to be repurchased in the next 18 months. In February 2022, the Board of Directors authorized the extension of this program to December 31, 2022. The Company’s management will continue to evaluate the extent to which the Company repurchases its shares, and the timing of such repurchases, based upon a variety of factors, including trading volume, market conditions, legal requirements, business conditions and other factors. Through December 31, 2021, we have executed and settled trades totaling $525 of common stock repurchases under the plan.
Capital Expenditures
Cash generated from operations is used to execute our capital priorities, which include sustaining and developing our global portfolio of long-lived assets. For example, the Board of Directors approved full funding for the Ahafo North project in Africa in July 2021. Total capital spend on the Ahafo North project is expected to range from $750 to $850, which we expect to fund from existing liquidity and future operating cash flows. We consider sustaining capital as those capital expenditures that are necessary to maintain current production and execute the current mine plan. Capital expenditures to develop new operations or related to projects at existing operations, where these projects will enhance production or reserves, are considered non-sustaining or development capital. In addition, the Company continues to evaluate strategic priorities and deployment of capital to projects in the pipeline to ensure it executes on its capital priorities and provides long term value. The Company’s decision to reprioritize, sell or abandon a development project, which may include returning mining concessions to host governments, could result in a future impairment charge.
Additionally, in 2020 we announced climate targets to reduce GHG emissions and plans to significantly invest in climate change initiatives in support of this goal, which may be capital in nature. As part of these initiatives, in November 2021, Newmont announced a strategic alliance with Caterpillar Inc. (“CAT”) with the aim to develop and implement a comprehensive all-electric autonomous mining system to achieve zero emissions mining. Newmont plans to provide a preliminary investment of $100 to CAT in connection with initial automation and electrification goals for surface and underground mining infrastructures and haulage fleets at Newmont’s CC&V mine in Colorado, USA and Tanami mine in Northern Territory, Australia. Other investments supporting our climate change initiatives are expected to include emissions reduction projects and renewable energy opportunities as we seek to achieve these climate targets. For risks related to climate-related capital expenditures, see Part I, Item 1A Risk Factors.
For the years ended December 31, 2021, 2020 and 2019 we had Additions to property, plant and mine development as follows:
202120202019
Development ProjectsSustaining CapitalTotalDevelopment ProjectsSustaining CapitalTotalDevelopment ProjectsSustaining CapitalTotal
North America$30 $309 $339 $49 $269 $318 $81 $295 $376 
South America201 127 328 93 111 204 173 124 297 
Australia257 228 485 132 248 380 61 185 246 
Africa154 125 279 44 103 147 123 123 246 
Nevada63 171 234 81 160 241 50 207 257 
Corporate and other25 28 42 49 11 21 32 
Accrual basis$708 $985 $1,693 $406 $933 $1,339 $499 $955 $1,454 
Decrease (increase) in non-cash adjustments
(40)(37)
Cash basis $1,653 $1,302 $1,463 
For the year ended December 31, 2021, development projects included Pamour in North America; Yanacocha Sulfides, Quecher Main and Cerro Negro expansion projects in South America; Tanami Expansion 2 and Power Generation Civil Upgrade in Australia; Subika Mining Method Change and Ahafo North in Africa; and Goldrush Complex and Turquoise Ridge 3rd shaft in Nevada. For the year ended December 31, 2020, development projects included Musselwhite Materials Handling, Pamour and Éléonore Lower Mine Material Handling System in North America; Quecher Main, Yanacocha Sulfides and Emilia in South America; Tanami Expansion 2 in Australia; Subika Mining Method Change and Ahafo North in Africa; and Goldrush Complex, Turquoise Ridge 3rd shaft and Range Front Declines at Cortez in Nevada. For the year ended December 31, 2019, development projects included Borden, Musselwhite Materials Handling and Éléonore Lower Mine Material Handling System in North America; Quecher Main and Yanacocha Sulfides projects in South America; Tanami Expansion 2 project in Australia; Ahafo North, Subika Underground, and the Ahafo Mill Expansion in Africa; and Goldrush Complex and Turquoise Ridge joint venture 3rd shaft in Nevada.
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For the years ended December 31, 2021, 2020 and 2019, sustaining capital included the following:
North America. Capital expenditures primarily related to surface and underground mine development, tailings facility construction, mining equipment and capitalized component purchases;
South America. Capital expenditures primarily related to capitalized component purchases, mining equipment, reserves drilling conversion, underground mine development, tailings facility construction and infrastructure improvements;
Australia. Capital expenditures primarily related to haul truck purchases for the Autonomous Haulage System, equipment and capitalized component purchases, underground mine development and tailings, water storage and support facilities;
Africa. Capital expenditures primarily related to underground mine development, capitalized component purchases, water treatment plant construction and tailings facility expansion; and
Nevada. Capital expenditures primarily related to surface and underground mine development, tailings facility construction and equipment and capitalized component purchases.
During 2021, 2020 and 2019, $156, $117 and $112, respectively, of drilling and related costs were capitalized and included in mine development costs. These capitalized costs included $18 at North America, $38 at South America, $74 at Australia, $5 at Africa and $21 at Nevada in 2021; $9 at North America, $15 at South America, $72 at Australia, $4 at Africa and $17 at Nevada in 2020; and $23 at North America, $20 at South America, $51 at Australia, $11 at Africa and $7 at Nevada in 2019.
During 2021, 2020 and 2019, $—, $—, and $43, respectively, of pre-stripping costs were capitalized and included in mine development costs. Pre-stripping costs included the Quecher Main project at Yanacocha in South America and South Arturo in Nevada in 2019.
Refer to our global project pipeline discussion above for additional details. Refer to Note 4 to our Consolidated Financial Statement and "Non-GAAP Financial Measures" within Part II, Item 7, Management’s Discussion and Analysis for further information.
Debt
Depending upon market conditions and strategic considerations, we may choose to refinance debt in the capital markets.
Debt and Corporate Revolving Credit Facilities. In March 2020, we completed a public offering of $1,000 of 2.25% 2030 Senior Notes that yielded $985 in net proceeds, which were used together with existing Cash and cash equivalents, to repurchase portions of our 3.50% 2022 Senior Notes and 3.70% 2023 Senior Notes.
In March 2021, the Company entered into an agreement to amend certain terms of the existing $3,000 revolving credit agreement dated April 4, 2019. As part of the amended terms to the revolving credit agreement, the interest rate includes a margin adjustment based on certain of the Company’s ESG scores. The maximum adjustment resulting from the ESG scores is plus or minus 0.05% and would not be expected to have a material impact on Interest expense, net of capitalized interest.
In April 2021, we fully redeemed all of the outstanding 3.625% Senior Notes due June 2021 ("2021 Notes") at a redemption price of $557.
In December 2021, we completed a public offering totaling $1,000 of 2.60% 2032 Senior Notes that yielded $992 in net proceeds. The coupon of the Notes is linked to Newmont's performance against key ESG commitments regarding 2030 emissions reduction targets and the representation of women in senior leadership roles target. The maximum adjustment resulting from not achieving the ESG targets would be a 0.60% increase to the stated coupon beginning in 2031, which is not expected to have a material impact on Interest expense, net of capitalized interest. The proceeds were used to repurchase portions of our 3.70% 2023 Senior Notes for a redemption price of $246.
In December 2021, the Company also fully redeemed all of the outstanding 2022 Senior Notes at a redemption price of $496.
In January 2022, we fully redeemed all of the outstanding 3.70% Senior Goldcorp Notes due March 2023 ("2023 Goldcorp Notes") at a redemption price of $90.
Following the January 2022 redemption of all of the outstanding 2023 Goldcorp Notes, our future debt maturities include $5,624 that mature beginning in 2029. See Note 21 to our Consolidated Financial Statements for further information. We generally expect to be able to fund maturities of debt from Net cash provided by (used in) operating activities, current investments, existing cash balances and available credit facilities.
See Note 21 to the Consolidated Financial Statements for more information.
Debt Covenants
Our senior notes and revolving credit facility contain various covenants and default provisions including payment defaults, limitation on liens, leases, sales and leaseback agreements and merger restrictions. Furthermore, our senior notes and corporate
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revolving credit facility contain covenants that include, limiting the sale of all or substantially all of our assets, certain change of control provisions and a negative pledge on certain assets.
The corporate revolving credit facility contains a financial ratio covenant requiring us to maintain a net debt (total debt net of cash and cash equivalents) to total capitalization ratio of less than or equal to 62.50% in addition to the covenants noted above.
At December 31, 2021 and 2020, we were in compliance with all existing debt covenants and provisions related to potential defaults.
Letters of Credit and Other Guarantees
In September 2013, the Company entered into a committed Letter of Credit Facility Agreement (“LC Agreement”) with BNP Paribas, New York Branch ("BNP") which established a $175 letter of credit facility for a three year period, subsequently extended to September 30, 2020, to support reclamation obligations. In September 2020, the LC Agreement terminated and the Company entered into an uncommitted Letter of Credit Facility Agreement with BNP which established a $175 uncommitted letter of credit facility that is extended on a month-to-month basis to support reclamation obligations.
We have off-balance sheet arrangements of $1,927 of outstanding surety bonds, bank letters of credit and bank guarantees (see Note 26 to the Consolidated Financial Statements). At December 31, 2021, $— of the $3,000 corporate revolving credit facility was used to secure the issuance of letters of credit.
Supplemental Guarantor Information
The Company filed a shelf registration statement with the SEC on Form S-3 under the Securities Act, of 1933, as amended, which enables us to issue an indeterminate number or amount of common stock, preferred stock, depository shares, debt securities, guarantees of debt securities, warrants and units (the “Shelf Registration Statement”). Under the Shelf Registration Statement, our debt securities may be guaranteed by Newmont USA Limited (“Newmont USA”), one of our consolidated subsidiaries (Newmont, as issuer, and Newmont USA, as guarantor, are collectively referred to here-within as the "Obligor Group"). These guarantees are full and unconditional, and none of our other subsidiaries guarantee any security issued and outstanding. The cash provided by operations of the Obligor Group, and all of its subsidiaries, is available to satisfy debt repayments as they become due, and there are no material restrictions on the ability of the Obligor Group to obtain funds from subsidiaries by dividend, loan, or otherwise, except to the extent of any rights noncontrolling interests, foreign currency or regulatory restrictions limiting repatriation of cash. Net assets attributable to noncontrolling interests were $(209) at December 31, 2021. All noncontrolling interests relate to non-guarantor subsidiaries.
Newmont and Newmont USA are primarily holding companies with no material operations, sources of income or assets other than equity interest in their subsidiaries and intercompany receivables or payables. Newmont USA’s primary investments are comprised of its 38.5% interest in NGM and 51.35% interest in Yanacocha. For further information regarding these and our other operations, refer to Note 4 of the Consolidated Financial Statements and Part I, Item 2, Management's Discussion and Analysis, Results of Consolidated Operations.
In addition to equity interests in subsidiaries, the Obligor Group’s balance sheets consisted primarily of the following intercompany assets, intercompany liabilities and external debt. The remaining assets and liabilities of the Obligor Group are considered immaterial at December 31, 2021.
December 31, 2021
Obligor GroupNewmont USA
Current intercompany assets$12,959 $5,450 
Non-current intercompany assets$2,301 $448 
Current intercompany liabilities$11,052 $1,963 
Current external debt$— $— 
Non-current external debt$5,558 $— 
Newmont USA's subsidiary guarantees (the “subsidiary guarantees”) are general unsecured senior obligations of Newmont USA and rank equal in right of payment to all of Newmont USA's existing and future senior unsecured indebtedness and senior in right of payment to all of Newmont USA's future subordinated indebtedness. The subsidiary guarantees are effectively junior to any secured indebtedness of Newmont USA to the extent of the value of the assets securing such indebtedness.
At December 31, 2021, Newmont USA had approximately $5,558 of consolidated indebtedness (including guaranteed debt), all of which relates to the guarantees of indebtedness of Newmont.
Under the terms of the subsidiary guarantees, holders of Newmont’s securities subject to such subsidiary guarantees will not be required to exercise their remedies against Newmont before they proceed directly against Newmont USA.
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Newmont USA will be released and relieved from all its obligations under the subsidiary guarantees in certain specified circumstances, including, but not limited to, the following:
upon the sale or other disposition (including by way of consolidation or merger), in one transaction or a series of related transactions, of a majority of the total voting power of the capital stock or other interests of Newmont USA (other than to Newmont or any of Newmont’s affiliates);
upon the sale or disposition of all or substantially all the assets of Newmont USA (other than to Newmont or any of Newmont’s affiliates); or
upon such time as Newmont USA ceases to guarantee more than $75 aggregate principal amount of Newmont’s debt (at December 31, 2021, Newmont USA guaranteed $600 aggregate principal amount of debt of Newmont that did not contain a similar fall-away provision).
Newmont’s debt securities are effectively junior to any secured indebtedness of Newmont to the extent of the value of the assets securing such indebtedness, and structurally subordinated to all debt and other liabilities of Newmont’s non-guarantor subsidiaries. At December 31, 2021, (i) Newmont’s total consolidated indebtedness was approximately $6,302, none of which was secured (other than $650 of Lease and other financing obligations), and (ii) Newmont’s non-guarantor subsidiaries had $5,845 of total liabilities (including trade payables, but excluding intercompany, external debt and reclamation and remediation liabilities), which would have been structurally senior to Newmont’s debt securities.
For further information on our debt, refer to Note 21 of the Consolidated Financial Statements.
Contractual Obligations
Our contractual obligations at December 31, 2021 are summarized as follows:
Payments Due by Period
Contractual ObligationsTotalCurrentNon-Current
Debt (1)
$9,297 $322 $8,975 
Finance lease and other financing obligations (2)
877 102 775 
Remediation and reclamation liabilities (3)
7,252 252 7,000 
Employee-related benefits (4)
1,058 128 930 
Uncertain income tax liabilities and interest (5)
336 — 336 
Operating leases and other obligations (6)
155 27 128 
Minimum royalty payments (7)
24 18 
Purchase obligations (8)
1,037 271 766 
Other (9)
247 66 181 
$20,283 $1,174 $19,109 
____________________________
(1)Debt includes principal of $5,711 and estimated interest payments of $3,586 on Senior Notes, assuming no early extinguishment.
(2)Finance lease and other financing obligations includes finance lease payments of $835 and additional payments of $42 for finance leases that have not yet commenced.
(3)Mining operations are subject to extensive environmental regulations in the jurisdictions in which they operate. Pursuant to environmental regulations, we are required to close our operations and reclaim and remediate the lands that operations have disturbed. The estimated undiscounted cash outflows of these Reclamation and remediation liabilities are reflected here. For more information regarding reclamation and remediation liabilities, see Note 6 to the Consolidated Financial Statements.
(4)Contractual obligations for Employee-related benefits include severance, workers’ participation, pension and other benefit plans. Pension plan and other benefit payments beyond 2031 cannot be reasonably estimated given variable market conditions and actuarial assumptions and are not included.
(5)We are unable to reasonably estimate the timing of our uncertain income tax liabilities and interest payments due to uncertainties in the timing of the effective settlement of tax positions.
(6)Operating lease and other obligations includes operating lease payments of $151 and additional payments of $4 for operating leases that have not yet commenced.
(7)Minimum royalty payments are related to continuing operations and are presented net of recoverable amounts.
(8)Purchase obligations are not recorded in the Consolidated Financial Statements. Purchase obligations represent contractual obligations for purchase of power, materials and supplies, consumables, inventories and capital projects.
(9)Other includes service contracts and other obligations not recorded in our Consolidated Financial Statements, as well as the Norte Abierto and Galore Creek deferred payment obligations accrued in Other current liabilities and Other non-current liabilities.
Environmental
Our mining and exploration activities are subject to various federal and state laws and regulations governing the protection of the environment. We have made, and expect to make in the future, expenditures to comply with such laws and regulations, but cannot
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predict the full amount of such future expenditures. We perform a comprehensive review of our reclamation and remediation liabilities annually and review changes in facts and circumstances associated with these obligations at least quarterly. Notably, Newmont is committed to the implementation of the Global Industry Standard on Tailings Management (“GISTM”) and all tailing storage facilities are expected to be in conformance with the GISTM by 2025. Compliance with GISTM remains on-going and has and may continue to result in further increases to our estimated closure costs. Additionally, laws, regulations and permit requirements focused on water management and discharge requirements for operations and water treatment in connection with closure are becoming increasingly stringent. Compliance with water management and discharge quality remains dynamic and has and may continue to result in further increases to our estimated closure costs.
At December 31, 2021 and 2020, $5,768 and $3,719, respectively, were accrued for reclamation costs relating to currently or recently producing or development stage mineral properties, of which $213 and $164, respectively, were classified as current liabilities.
In addition, we are involved in several matters concerning environmental obligations associated with former, primarily historic, mining activities. Based upon our best estimate of our liability for these matters, $344 and $313 were accrued for such obligations at December 31, 2021 and 2020, respectively, of which $60 and $50, respectively, were classified as current liabilities. We spent $43, $25 and $31 during 2021, 2020, and 2019, respectively, for environmental obligations related to the former mining activities.
Reclamation and remediation adjustments during 2021 primarily related to (i) increased water treatment costs at portions of our Yanacocha site operation that are no longer in production and with no expected substantive future economic value and (ii) higher estimated closure costs at various other non-operating sites arising from recent tailings management review and monitoring requirements set forth by GISTM. Reclamation and remediation adjustments during 2020 primarily related to increased lime consumption and water treatment costs at non-operating Yanacocha sites and updated project cost estimates at inactive Porcupine sites and Midnite mine and Dawn mill sites.
During the year ended 2021, 2020, and 2019, capital expenditures were approximately $13, $23, and $65, respectively, to comply with environmental regulations.
For more information on the Company’s reclamation and remediation liabilities, see Notes 6 and 26 to the Consolidated Financial Statements. For discussion of regulatory, tailings, water, climate and other environmental risks, see Part I, Item 1A. Risk Factors, for additional information.
Forward-Looking Statements
The foregoing discussion and analysis, as well as certain information contained elsewhere in this Annual Report, contain “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, and are intended to be covered by the safe harbor created thereby. For a more detailed discussion of risks and other factors that might impact forward-looking statements and other important information about forward-looking statements, see the discussion in Forward-Looking Statements in Item 1, Business and Item 1A, Risk Factors.
Non-GAAP Financial Measures
Non-GAAP financial measures are intended to provide additional information only and do not have any standard meaning prescribed by U.S. generally accepted accounting principles (“GAAP”). These measures should not be considered in isolation or as a substitute for measures of performance prepared in accordance with GAAP. Unless otherwise noted, we present the Non-GAAP financial measures of our continuing operations in the tables below. For additional information regarding our discontinued operations, see Note 1 to the Consolidated Financial Statements.
Earnings before interest, taxes and depreciation and amortization and Adjusted earnings before interest, taxes and depreciation and amortization
Management uses Earnings before interest, taxes and depreciation and amortization (“EBITDA”) and EBITDA adjusted for non-core or certain items that have a disproportionate impact on our results for a particular period (“Adjusted EBITDA”) as non-GAAP measures to evaluate the Company’s operating performance. EBITDA and Adjusted EBITDA do not represent, and should not be considered an alternative to, net income (loss), operating income (loss), or cash flow from operations as those terms are defined by GAAP, and do not necessarily indicate whether cash flows will be sufficient to fund cash needs. Although Adjusted EBITDA and similar measures are frequently used as measures of operations and the ability to meet debt service requirements by other companies, our calculation of Adjusted EBITDA is not necessarily comparable to such other similarly titled captions of other companies. The Company believes that Adjusted EBITDA provides useful information to investors and others in understanding and evaluating our operating results in the same manner as our management and Board of Directors. Management’s determination of the components of Adjusted EBITDA are evaluated periodically and based, in part, on a review of non-GAAP financial measures used by mining industry analysts. Net income (loss) attributable to Newmont stockholders is reconciled to EBITDA and Adjusted EBITDA as follows:
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Year Ended December 31,
202120202019
Net income (loss) attributable to Newmont stockholders$1,166 $2,829 $2,805 
Net income (loss) attributable to noncontrolling interests(933)(38)79 
Net (income) loss from discontinued operations (1)
(57)(163)72 
Equity loss (income) of affiliates(166)(189)(95)
Income and mining tax expense (benefit)1,098 704 832 
Depreciation and amortization2,323 2,300 1,960 
Interest expense, net274 308 301 
EBITDA$3,705 $5,751 $5,954 
Adjustments:
Reclamation and remediation charges (2)
$1,696 $213 $120 
Loss on assets held for sale (3)
571 — — 
Gain on asset and investment sales (4)
(212)(677)(30)
Change in fair value of investments (5)
135 (252)(166)
Impairment of long-lived and other assets (6)
25 49 
Loss on debt extinguishment (7)
11 77 — 
Settlement costs (8)
11 58 
Restructuring and severance (9)
11 18 
COVID-19 specific costs (10)
92 — 
Pension settlements and curtailments (11)
92 (20)
Impairment of investments (12)
93 
Goldcorp transaction and integration costs (13)
— 23 217 
Gain on formation of Nevada Gold Mines (14)
— — (2,390)
Nevada JV transaction and integration costs (15)
— — 30 
Adjusted EBITDA (16)
$5,963 $5,537 $3,734 
____________________________
(1)For additional information regarding our discontinued operations, see Note 1 to our Consolidated Financial Statements.
(2)Reclamation and remediation charges, included in Reclamation and remediation, represent revisions to the reclamation and remediation plans and cost estimates at the Company’s former operating properties and historic mining operations that have entered the closure phase and have no substantive future economic value. For additional information, see Note 6 in the Consolidated Financial Statements.
(3)Loss on assets held for sale, included in Loss on assets held for sale, represents the loss recognized due to the reclassification of the Conga mill assets as held for sale during the third quarter of 2021. The assets were remeasured to fair value less costs to sell. For additional information, see Note 8 to our Consolidated Financial Statements.
(4)Gain on asset and investment sales, included in Gain on asset and investment sales, net, primarily represents the gain on the sale of the Kalgoorlie Power business, gain on the NGM Lone Tree and South Arturo exchange transaction, and gain on the sale of TMAC in 2021; gains on the sale of Kalgoorlie and Continental and a gain on the sale of certain royalty interests to Maverix in 2020; and a gain on the sale of exploration land in 2019. For additional information, see Note 10 to our Consolidated Financial Statements.
(5)Change in fair value of investments, included in Other income (loss), net, primarily represents unrealized gains and losses related to the Company's investments in current and non-current marketable and other equity securities. For additional information regarding our investments, see Note 16 to our Consolidated Financial Statements.
(6)Impairment of long-lived and other assets, included in Other expense, net represents non-cash write-downs of various assets that are no longer in use and materials and supplies inventories.
(7)Loss on debt extinguishment, included in Other income (loss), net, primarily represents losses on the debt tender offer and subsequent extinguishment of the 2023 Newmont Senior Notes and the 2023 Goldcorp Senior Notes during 2021 and the extinguishment of a portion of the 2022 Senior Notes and 2023 Senior Notes during 2020.
(8)Settlement costs, included in Other expense, net, primarily represents a voluntary contribution made to the Republic of Suriname in 2021; costs related to the ecological tax obligation at Peñasquito in Mexico, mineral interest settlements at Ahafo and Akyem in Africa, the Cedros community agreement at Peñasquito in Mexico, a water related settlement at Yanacocha in Peru and other related costs in 2020; and certain costs associated with legal and other settlements for 2019.
(9)Restructuring and severance, included in Other expense, net, primarily represents severance and related costs associated with significant organizational and operating model changes implemented by the Company for all periods presented.
(10)COVID-19 specific costs, included in Other expense, net, represents incremental direct costs incurred as a result of actions taken to protect against the impacts of the COVID-19 pandemic and, in 2021, primarily include amounts distributed from Newmont Global Community Support Fund to help host communities, governments and employees combat the COVID-19 pandemic. See Note 9 to our Consolidated Financial Statements for further information.
(11)Pension settlements and curtailments, included in Other income (loss), net, primarily represents pension settlement charges due to lump sum payments to participants in 2021 and 2020 and pension curtailments gains in 2019. See Note 13 to our Consolidated Financial Statements for further information.
(12)Impairment of investments, included in Other income (loss), net, primarily represents other-than-temporary impairment of other investments, including the impairment of the TMAC investment in 2020.
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(13)Goldcorp transaction and integration costs, included in Other expense, net, primarily represents costs incurred related to the Newmont Goldcorp transaction completed during 2019 as well as subsequent integration costs.
(14)Gain on formation of Nevada Gold Mines, included in Gain on formation of Nevada Gold Mines, represents the difference between the fair value of our 38.5% interest in NGM and the carrying value of the Nevada mining operations contributed on July 1, 2019.
(15)Nevada JV transaction and integration costs, included in Other expense, net, primarily represents costs incurred related to the Nevada JV Agreement, including hostile defense fees, during 2019.
(16)Adjusted EBITDA has not been adjusted for $8 and $178 of cash care and maintenance costs, included in Care and maintenance, which primarily represent costs incurred associated with certain mine sites being temporarily placed into care and maintenance in response to the COVID-19 pandemic for the years ended December 31, 2021 and 2020, respectively.
Additionally, the Company uses Pueblo Viejo EBITDA as a non-GAAP measure to evaluate the operating performance of its investment in the Pueblo Viejo mine. Pueblo Viejo EBITDA does not represent, and should not be considered an alternative to, Equity income (loss) of affiliates, as defined by GAAP, and does not necessarily indicate whether cash distributions from Pueblo Viejo will match Pueblo Viejo EBITDA or earnings from affiliates. Although the Company has the ability to exert significant influence, it does not have direct control over the operations or resulting revenues and expenses, nor does it proportionately consolidate its investment in Pueblo Viejo. The Company believes that Pueblo Viejo EBITDA provides useful information to investors and others in understanding and evaluating the operating results of its investment in Pueblo Viejo, in the same manner as management and the Board of Directors. Equity income (loss) of affiliates is reconciled to Pueblo Viejo EBITDA as follows:
Year Ended December 31,
202120202019
Equity income (loss) of affiliates$166 $189 $95 
Equity (income) loss of affiliates, excluding Pueblo Viejo (1)
— 29 
Equity income (loss) of affiliates, Pueblo Viejo (1)
166 193 124 
Reconciliation of Pueblo Viejo on attributable basis:
Income and mining tax expense (benefit)145 169 69 
Depreciation and amortization109 72 52 
Pueblo Viejo EBITDA$420 $434 $245 
____________________________
(1)See Note 16 to the Consolidated Financial Statements.
Adjusted net income (loss)
Management uses Adjusted net income (loss) to evaluate the Company’s operating performance and for planning and forecasting future business operations. The Company believes the use of Adjusted net income (loss) allows investors and analysts to understand the results of the continuing operations of the Company and its direct and indirect subsidiaries relating to the sale of products, by excluding certain items that have a disproportionate impact on our results for a particular period. Adjustments to continuing operations are presented before tax and net of our partners’ noncontrolling interests, when applicable. The tax effect of adjustments is presented in the Tax effect of adjustments line and is calculated using the applicable regional tax rate. Management’s determination of the components of Adjusted net income (loss) are evaluated periodically and based, in part, on a review of non-GAAP financial measures used by mining industry analysts. Net income (loss) attributable to Newmont stockholders is reconciled to Adjusted net income (loss) as follows:
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Year Ended December 31, 2021
per share data (1)
basicdiluted
Net income (loss) attributable to Newmont stockholders$1,166 $1.46 $1.46 
Net loss (income) attributable to Newmont stockholders from discontinued operations (2)
(57)(0.07)(0.07)
Net income (loss) attributable to Newmont stockholders from continuing operations1,109 1.39 1.39 
Reclamation and remediation charges, net (3)
983 1.23 1.23 
Loss on assets held for sale, net (4)
372 0.47 0.46 
Gain on asset and investment sales (5)
(212)(0.27)(0.27)
Change in fair value of investments (6)
135 0.17 0.17 
Impairment of long-lived and other assets (7)
25 0.03 0.03 
Loss on debt extinguishment (8)
11 0.01 0.01 
Settlement costs (9)
11 0.01 0.01 
Restructuring and severance, net (10)
0.01 0.01 
COVID-19 specific costs (11)
— — 
Pension settlements (12)
— — 
Impairment of investments (13)
— — 
Tax effect of adjustments (14)
(413)(0.51)(0.51)
Valuation allowance and other tax adjustments, net (15)
331 0.43 0.43 
Adjusted net income (loss) (16)
$2,371 $2.97 $2.96 
Weighted average common shares (millions): (17)
799 801 
____________________________
(1)Per share measures may not recalculate due to rounding.
(2)For additional information regarding our discontinued operations, see Note 1 to our Consolidated Financial Statements.
(3)Reclamation and remediation charges, net, included in Reclamation and remediation, represent revisions to the reclamation and remediation plans and cost estimates at the Company’s former operating properties and historic mining operations that have entered the closure phase and have no substantive future economic value. See Note 6 to our Consolidated Financial Statements for further information. Amount is presented net of pre-tax income (loss) attributable to noncontrolling interests of $(713).
(4)Loss on assets held for sale, net, included in Loss on assets held for sale, represents the loss recognized due to the reclassification of the Conga mill assets as held for sale during the third quarter of 2021. The assets were remeasured to fair value less costs to sell. Amounts are presented net of income (loss) attributable to noncontrolling interests of $(199). For additional information, see Note 8 to our Consolidated Financial Statements.
(5)Gain on asset and investment sales, included in Gain on asset and investment sales, net, primarily represents the gain on the sale of the Kalgoorlie Power business, gain on the NGM Lone Tree and South Arturo exchange, and gain on the sale of TMAC. For additional information, see Note 10 to our Consolidated Financial Statements.
(6)Change in fair value of investments, included in Other income (loss), net, primarily represents unrealized gains and losses related to the Company's investment in current and non-current marketable and other equity securities. For additional information regarding our investments, see Note 16 to our Consolidated Financial Statements.
(7)Impairment of long-lived and other assets, included in Other expense, net represents non-cash write-downs of various assets that are no longer in use and materials and supplies inventories.
(8)Loss on debt extinguishment, included in Other income (loss), net, primarily represents losses on the debt tender offer and subsequent extinguishment of the 2023 Newmont Senior Notes and the 2023 Goldcorp Senior Notes.
(9)Settlement costs, included in Other expense, net, primarily are comprised of a voluntary contribution made to the Republic of Suriname.
(10)Restructuring and severance, net, included in Other expense, net, primarily represents severance and related costs associated with significant organizational and operating model changes implemented by the Company. Amounts are presented net of income (loss) attributable to noncontrolling interests of $(2).
(11)COVID-19 specific costs, included in Other expense, net, represents incremental direct costs incurred as a result of actions taken to protect against the impacts of the COVID-19 pandemic and primarily include amounts distributed from the Newmont Global Community Fund to help host communities, governments and employees combat the COVID-19 pandemic. Adjusted net income (loss) has not been adjusted for $82 of incremental COVID-19 costs incurred as a result of actions taken to protect against the impacts of the COVID-19 pandemic at our operational sites. See Note 9 to our Consolidated Financial Statements for further information.
(12)Pension settlements, included in Other income (loss), net, represents pension settlement charges due to lump sum payments to participants. See Note 13 to our Consolidated Financial Statements for further information.
(13)Impairment of investments, included in Other income (loss), net, primarily represents other-than-temporary impairment of other investments.
(14)The tax effect of adjustments, included in Income and mining tax benefit (expense), represents the tax effect of adjustments in footnotes (3) through (13), as described above, and are calculated using the applicable regional tax rate.
(15)Valuation allowance and other tax adjustments, net, included in Income and mining tax benefit (expense), is recorded for items such as foreign tax credits, alternative minimum tax credits, capital losses, disallowed foreign losses, and the effects of changes in foreign currency exchange rates on deferred tax assets and deferred tax liabilities. The adjustment reflects the net increase or (decrease) to net operating losses, capital losses, tax credit carryovers, and other deferred tax assets subject to valuation allowance of $419, the expiration of U.S. capital loss carryovers of $152, the effects of changes in foreign exchange rates on deferred tax assets and liabilities of $(17), net additions to the reserve for uncertain tax positions of $99, and other tax adjustments of $5. Total amount is presented net of income (loss) attributable to noncontrolling interests of $(327).
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(16)Adjusted net income (loss) has not been adjusted for $8 of cash and $3 of non-cash care and maintenance costs, included in Care and maintenance and Depreciation and amortization, respectively, which represent costs associated with our Tanami site being temporarily placed into care and maintenance in response to the COVID-19 pandemic during the year ended December 31, 2021, respectively.
(17)Adjusted net income (loss) per diluted share is calculated using diluted common shares, which are calculated in accordance with U.S. GAAP.
Year Ended December 31, 2020
per share data (1)
basicdiluted
Net income (loss) attributable to Newmont stockholders$2,829 $3.52 $3.51 
Net loss (income) attributable to Newmont stockholders from discontinued operations (2)
(163)(0.20)(0.20)
Net income (loss) attributable to Newmont stockholders from continuing operations2,666 3.32 3.31 
(Gain) loss on asset and investment sales (3)
(677)(0.84)(0.84)
Change in fair value of investments (4)
(252)(0.31)(0.31)
Reclamation and remediation charges, net (5)
160 0.20 0.20 
Impairment of investments (6)
93 0.11 0.11 
Pension settlement (7)
92 0.11 0.11 
COVID-19 specific costs, net (8)
84 0.10 0.10 
Loss on debt extinguishment (9)
77 0.09 0.09 
Settlement costs, net (10)
55 0.07 0.07 
Impairment of long-lived and other assets (11)
49 0.06 0.06 
Goldcorp transaction and integration costs (12)
23 0.03 0.03 
Restructuring and severance, net (13)
17 0.02 0.02 
Tax effect of adjustments (14)
62 0.08 0.08 
Valuation allowance and other tax adjustments, net (15)
(309)(0.38)(0.37)
Adjusted net income (loss) (16)
$2,140 $2.66 $2.66 
Weighted average common shares (millions): (17)
804 806 
____________________________
(1)Per share measures may not recalculate due to rounding.
(2)For additional information regarding our discontinued operations, see Note 1 to our Consolidated Financial Statements.
(3)(Gain) loss on asset and investment sales, included in Gain on asset and investment sales, net, primarily represents gains on the sale of Kalgoorlie and Continental and a gain on the sale of royalty interests to Maverix. For additional information, see Note 10 to our Consolidated Financial Statements.
(4)Change in fair value of investments, included in Other income (loss), net, primarily represents unrealized gains and losses related to the Company's investment in current and non-current marketable and other equity securities. For additional information regarding our investments, see Note 16 to our Consolidated Financial Statements.
(5)Reclamation and remediation charges, net, included in Reclamation and remediation, represent revisions to remediation plans at the Company’s former operating properties and historic mining operations that have entered the closure phase and have no substantive future economic value, including adjustments related to increased lime consumption and water treatment costs at inactive Yanacocha sites and updated project cost estimates at inactive Porcupine sites, the Midnite mine site and Dawn mill site. Amount is presented net of income (loss) attributable to noncontrolling interests of $(53).
(6)Impairment of investments, included in Other income (loss), net, primarily represents the other-than-temporary impairment of the TMAC investment.
(7)Pension settlements, included in Other income (loss), net, represents pension settlement charges due to lump sum payments to participants. See Note 13 to our Consolidated Financial Statements for further information.
(8)COVID-19 specific costs, net, included in Other expense, net, represents incremental direct costs incurred as a result of actions taken to protect against the impacts of the COVID-19 pandemic. Amount is presented net of income (loss) attributable to noncontrolling interests of $(8). See Note 9 to our Consolidated Financial Statements for further information.
(9)Loss on debt extinguishment, included in Other income (loss), net, primarily represents losses on the extinguishment of a portion of the 2022 Senior Notes and 2023 Senior Notes during 2020.
(10)Settlement costs, net, included in Other expense, net, primarily represents costs related to the ecological tax obligation at Peñasquito in Mexico, mineral interest settlements at Ahafo and Akyem in Africa, the Cedros community agreement at Peñasquito in Mexico, a water related settlement at Yanacocha in Peru and other related costs. Amount is presented net of income (loss) attributable to noncontrolling interests of $(3).
(11)Impairment of long-lived and other assets, included in Other expense, net, represents non-cash write-downs of various assets that are no longer in use.
(12)Goldcorp transaction and integration costs, included in Other expense, net, primarily represents costs incurred related to the Newmont Goldcorp transaction completed during 2019 as well as subsequent integration costs.
(13)Restructuring and severance, net, included in Other expense, net, primarily represents severance and related costs associated with significant organizational and operating model changes implemented by the Company. Amounts are presented net of income (loss) attributable to noncontrolling interests of $(1).
(14)The tax effect of adjustments, included in Income and mining tax benefit (expense), represents the tax effect of adjustments in footnotes (3) through (13), as described above, and are calculated using the applicable regional tax rate.
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(15)Valuation allowance and other tax adjustments, net, included in Income and mining tax benefit (expense), is recorded for items such as foreign tax credits, alternative minimum tax credits, capital losses, disallowed foreign losses, and the effects of changes in foreign currency exchange rates on deferred tax assets and deferred tax liabilities. The adjustment is due to the benefit recognized on the sale of Kalgoorlie and related tax capital loss of $(353), net increase or (decrease) to net operating losses, tax credit carryovers and other deferred tax assets subject to valuation allowance of $186, the effects of changes in foreign exchange rates on deferred tax assets and liabilities of $(98), net reductions to the reserve for uncertain tax positions of $(21) and other tax adjustments of $39. Total amount is presented net of income (loss) attributable to noncontrolling interests of $(62).
(16)Adjusted net income (loss) has not been adjusted for $165 of cash and $85 of non-cash care and maintenance costs, included in Care and maintenance and Depreciation and amortization, respectively, which primarily represent costs associated with our Musselwhite, Éléonore, Peñasquito, Yanacocha and Cerro Negro sites being temporarily placed into care and maintenance in response to the COVID-19 pandemic during a portion of the year ended December 31, 2020, respectively. Amounts are presented net of income (loss) attributable to noncontrolling interests of $13 and $3, respectively.
(17)Adjusted net income (loss) per diluted share is calculated using diluted common shares, which are calculated in accordance with U.S. GAAP.
Year Ended December 31, 2019
per share data (1)
basicdiluted
Net income (loss) attributable to Newmont stockholders$2,805 $3.82 $3.81 
Net loss (income) attributable to Newmont stockholders from discontinued operations (2)
72 0.10 0.10 
Net income (loss) attributable to Newmont stockholders from continuing operations2,877 3.92 3.91 
Gain on formation of Nevada Gold Mines (3)
(2,390)(3.25)(3.24)
Goldcorp transaction and integration costs (4)
217 0.29 0.29 
Change in fair value of investments (5)
(166)(0.23)(0.23)
Reclamation and remediation charges, net (6)
99 0.13 0.13 
Nevada JV transaction and integration costs (7)
30 0.04 0.04 
Loss (gain) on asset and investment sales, net (8)
(28)(0.04)(0.04)
Pension curtailment (9)
(20)(0.03)(0.03)
Restructuring and severance, net (10)
0.01 0.01 
Settlement costs (11)
0.01 0.01 
Impairment of long-lived and other assets, net (12)
— — 
Impairment of investments (13)
— — 
Tax effect of adjustments (14)
418 0.57 0.57 
Valuation allowance and other tax adjustments, net (15)
(84)(0.10)(0.10)
Adjusted net income (loss)$970 $1.32 $1.32 
Weighted average common shares (millions): (16)
735 737 
____________________________
(1)Per share measures may not recalculate due to rounding.
(2)For additional information regarding our discontinued operations, see Note 1 to our Consolidated Financial Statements.
(3)Gain on formation of Nevada Gold Mines, included in Gain on formation of Nevada Gold Mines, represents the difference between the fair value of our 38.5% interest in NGM and the carrying value of the Nevada mining operations contributed.
(4)Goldcorp transaction and integration costs, included in Other expense, net, primarily represents costs incurred related to the Newmont Goldcorp transaction during 2019.
(5)Change in fair value of investments, included in Other income (loss), net, primarily represents unrealized gains and losses related to the Company's investment in current and non-current marketable and other equity securities and our investment instruments in Continental.
(6)Reclamation and remediation charges, net, included in Reclamation and remediation, represent revisions to remediation plans at the Company’s former operating properties and historic mining operations that have entered the closure phase and have no substantive future economic value, including adjustments related to updated water management costs at inactive Yanacocha sites, updated project cost estimates at the Mule Canyon and Northumberland mine sites and a review of the project cost estimates at the Midnite and Dawn remediation site, as well as increased water management costs at the Con mine. Amount is presented net of income (loss) attributable to noncontrolling interests of $(21).
(7)Nevada JV transaction and integration costs, included in Other expense, net, primarily represents costs incurred related to the Nevada JV Agreement, including hostile defense fees.
(8)Loss (gain) on asset and investment sales, net, included in Other income (loss), net, primarily represents a gain on the sale of exploration land. Amount is presented net of income (loss) attributable to noncontrolling interest of $2.
(9)Pension curtailment, included in Other income (loss), net, primarily represents curtailment charges recognized due to a significant amount of employees being terminated as a result of establishing NGM.
(10)Restructuring and severance, net, included in Other expense, net, primarily represents certain costs associated with severance and legal costs. Amount is presented net of income (loss) attributable to noncontrolling interests of $(1).
(11)Settlement costs, included in Other expense, net, primarily represents certain costs associated with legal and other settlements.
(12)Impairment of long-lived and other assets, net, included in Impairment of long-lived and other assets, represents non-cash write-downs of various assets that are no longer in use. Amount is presented net of income (loss) attributable to noncontrolling interests of $(1).
(13)Impairment of investments, included in Other income (loss), net, represents other-than-temporary impairments of other investments.
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(14)The tax effect of adjustments, included in Income and mining tax benefit (expense), represents the tax effect of adjustments in footnotes (3) through (13), as described above, and are calculated using the applicable regional tax rate.
(15)Valuation allowance and other tax adjustments, net, included in Income and mining tax benefit (expense), is recorded for items such as foreign tax credits, alternative minimum tax credits, capital losses, disallowed foreign losses, and the effects of changes in foreign currency exchange rates on deferred tax assets and deferred tax liabilities. The adjustment is due to a net increase or (decrease) to net operating losses, tax credit carryovers and other deferred tax assets subject to valuation allowance of $(262), the effects of changes in foreign exchange rates on deferred tax assets and liabilities of $(95), the effects related to the amendment of the 2014 U.S. federal income tax return and related carrybacks of $150, additions to the reserve for uncertain tax positions of $70, the expiration of U.S. capital loss carryovers of $34, and other tax adjustments of $28. Total amount is presented net of income (loss) attributable to noncontrolling interests of $(9).
(16)Adjusted net income (loss) per diluted share is calculated using diluted common shares, which are calculated in accordance with U.S. GAAP.
Free Cash Flow
Management uses Free Cash Flow as a non-GAAP measure to analyze cash flows generated from operations. Free Cash Flow is Net cash provided by (used in) operating activities less Net cash provided by (used in) operating activities of discontinued operations less Additions to property, plant and mine development as presented on the Consolidated Statements of Cash Flows. The Company believes Free Cash Flow is also useful as one of the bases for comparing the Company’s performance with its competitors. Although Free Cash Flow and similar measures are frequently used as measures of cash flows generated from operations by other companies, the Company’s calculation of Free Cash Flow is not necessarily comparable to such other similarly titled captions of other companies.
The presentation of non-GAAP Free Cash Flow is not meant to be considered in isolation or as an alternative to net income as an indicator of the Company’s performance, or as an alternative to cash flows from operating activities as a measure of liquidity as those terms are defined by GAAP, and does not necessarily indicate whether cash flows will be sufficient to fund cash needs. The Company’s definition of Free Cash Flow is limited in that it does not represent residual cash flows available for discretionary expenditures due to the fact that the measure does not deduct the payments required for debt service and other contractual obligations or payments made for business acquisitions. Therefore, the Company believes it is important to view Free Cash Flow as a measure that provides supplemental information to the Company’s Consolidated Statements of Cash Flows.
The following table sets forth a reconciliation of Free Cash Flow, a non-GAAP financial measure, to Net cash provided by (used in) operating activities, which the Company believes to be the GAAP financial measure most directly comparable to Free Cash Flow, as well as information regarding Net cash provided by (used in) investing activities and Net cash provided by (used in) financing activities.
Year Ended December 31,
202120202019
Net cash provided by (used in) operating activities$4,279 $4,882 $2,866 
Less: Net cash used in (provided by) operating activities of discontinued operations(13)10 
Net cash provided by (used in) operating activities of continuing operations4,266 4,890 2,876 
Less: Additions to property, plant and mine development(1,653)(1,302)(1,463)
Free Cash Flow$2,613 $3,588 $1,413 
Net cash provided by (used in) investing activities (1)
$(1,868)$91 $(1,226)
Net cash provided by (used in) financing activities$(2,958)$(1,680)$(2,777)
____________________________
(1)Net cash provided by (used in) investing activities includes Additions to property, plant and mine development, which is included in the Company’s computation of Free Cash Flow.
Costs applicable to sales per ounce/gold equivalent ounce
Costs applicable to sales per ounce/gold equivalent ounce are non-GAAP financial measures. These measures are calculated by dividing the costs applicable to sales of gold and other metals by gold ounces or gold equivalent ounces sold, respectively. These measures are calculated for the periods presented on a consolidated basis. Costs applicable to sales per ounce/gold equivalent ounce statistics are intended to provide additional information only and do not have any standardized meaning prescribed by GAAP and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with GAAP. The measures are not necessarily indicative of operating profit or cash flow from operations as determined under GAAP. Other companies may calculate these measures differently.
The following tables reconcile these non-GAAP measures to the most directly comparable GAAP measures.
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Gold (1)
GEO (2)
Year Ended December 31,Year Ended December 31,
202120202019202120202019
Costs applicable to sales (3)
$4,628 $4,408 $4,663 $807 $606 $532 
Gold/GEO sold (thousand ounces) (4)
5,897 5,831 6,465 1,258 1,062 621 
Costs applicable to sales per ounce (5)
$785 $756 $721 $640 $571 $858 
____________________________
(1)Includes by-product credits of $187, $128 and $91 in 2021, 2020, and 2019, respectively.
(2)Includes by-product credits of $7, $2 and $3 in 2021, 2020, and 2019, respectively.
(3)Excludes Depreciation and amortization and Reclamation and remediation.
(4)Gold equivalent ounces is calculated as pounds or ounces produced multiplied by the ratio of the other metals price to the gold price, using Gold ($1,200/oz.), Copper ($2.75/lb.), Silver ($22.00/oz.), Lead ($0.90/lb.) and Zinc ($1.05/lb.) pricing for 2021, Gold ($1,200/oz.), Copper ($2.75/lb.), Silver ($16.00/oz.), Lead ($0.95/lb.) and Zinc ($1.20/lb.) pricing for 2020 and Gold ($1,200/oz.), Copper ($2.75/lb.), Silver ($15.00/oz.), Lead ($0.90/lb.) and Zinc ($1.05/lb.) pricing for 2019.
(5)Per ounce measures may not recalculate due to rounding.
All-In Sustaining Costs
Newmont has developed a metric that expands on GAAP measures, such as cost of goods sold, and non-GAAP measures, such as costs applicable to sales per ounce, to provide visibility into the economics of our mining operations related to expenditures, operating performance and the ability to generate cash flow from our continuing operations.
Current GAAP measures used in the mining industry, such as cost of goods sold, do not capture all of the expenditures incurred to discover, develop and sustain production. Therefore, we believe that all-in sustaining costs is a non-GAAP measure that provides additional information to management, investors and analysts that aid in the understanding of the economics of our operations and performance compared to other producers and provides investors visibility by better defining the total costs associated with production.
All-in sustaining cost (“AISC”) amounts are intended to provide additional information only and do not have any standardized meaning prescribed by GAAP and should not be considered in isolation or as a substitute for measures of performance prepared in accordance with GAAP. The measures are not necessarily indicative of operating profit or cash flow from operations as determined under GAAP. Other companies may calculate these measures differently as a result of differences in the underlying accounting principles, policies applied and in accounting frameworks such as in International Financial Reporting Standards (“IFRS”), or by reflecting the benefit from selling non-gold metals as a reduction to AISC. Differences may also arise related to definitional differences of sustaining versus development (i.e. non-sustaining) activities based upon each company’s internal policies.
The following disclosure provides information regarding the adjustments made in determining the all-in sustaining costs measure:
Costs applicable to sales. Includes all direct and indirect costs related to current production incurred to execute the current mine plan. We exclude certain exceptional or unusual amounts from Costs applicable to sales (“CAS”), such as significant revisions to recovery amounts. CAS includes by-product credits from certain metals obtained during the process of extracting and processing the primary ore-body. CAS is accounted for on an accrual basis and excludes Depreciation and amortization and Reclamation and remediation, which is consistent with our presentation of CAS on the Consolidated Statements of Operations. In determining AISC, only the CAS associated with producing and selling an ounce of gold is included in the measure. Therefore, the amount of gold CAS included in AISC is derived from the CAS presented in the Company’s Consolidated Statements of Operations less the amount of CAS attributable to the production of other metals. The other metals' CAS at those mine sites is disclosed in Note 4 to the Consolidated Financial Statements. The allocation of CAS between gold and other metals is based upon the relative sales value of gold and other metals produced during the period.
Reclamation costs. Includes accretion expense related to reclamation liabilities and the amortization of the related Asset Retirement Cost (“ARC”) for the Company’s operating properties. Accretion related to the reclamation liabilities and the amortization of the ARC assets for reclamation does not reflect annual cash outflows but are calculated in accordance with GAAP. The accretion and amortization reflect the periodic costs of reclamation associated with current production and are therefore included in the measure. The allocation of these costs to gold and other metals is determined using the same allocation used in the allocation of CAS between gold and other metals.
Advanced projects, research and development and exploration. Includes incurred expenses related to projects that are designed to sustain current production and exploration. We note that as current resources are depleted, exploration and advanced projects are necessary for us to replace the depleting reserves or enhance the recovery and processing of the current reserves to sustain production at existing operations. As these costs relate to sustaining our production, and are considered a continuing cost of a mining company, these costs are included in the AISC measure. These costs are derived from the Advanced projects, research and development and Exploration amounts presented in the Consolidated Statements of Operations less incurred expenses related to the
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development of new operations, or related to major projects at existing operations where these projects will materially benefit the operation in the future. The allocation of these costs to gold and other metals is determined using the same allocation used in the allocation of CAS between gold and other metals. We also allocate these costs incurred at the Other North America, Other Australia and Corporate and Other locations using the proportion of CAS between gold and other metals.
General and administrative. Includes costs related to administrative tasks not directly related to current production, but rather related to support our corporate structure and fulfill our obligations to operate as a public company. Including these expenses in the AISC metric provides visibility of the impact that general and administrative activities have on current operations and profitability on a per ounce basis. We allocate these costs to gold and other metals at the Other North America, Other Australia and Corporate and Other locations using the proportion of CAS between gold and other metals.
Care and maintenance and Other expense, net. Care and maintenance primarily includes direct operating costs incurred at the mine sites during the period that these sites were temporarily placed into care and maintenance in response to the COVID-19 pandemic. For Other expense, net we exclude certain exceptional or unusual expenses, such as restructuring, as these are not indicative to sustaining our current operations. Furthermore, this adjustment to Other expense, net is also consistent with the nature of the adjustments made to Net income (loss) attributable to Newmont stockholders as disclosed in the Company’s non-GAAP financial measure Adjusted net income (loss). The allocation of these costs to gold and other metals is determined using the same allocation used in the allocation of CAS between gold and other metals.
Treatment and refining costs. Includes costs paid to smelters for treatment and refining of our concentrates to produce the salable metal. These costs are presented net as a reduction of Sales on our Consolidated Statements of Operations. The allocation of these costs to gold and other metals is determined using the same allocation used in the allocation of CAS between gold and other metals.
Sustaining capital and finance lease payments. We determined sustaining capital and finance lease payments as those capital expenditures and finance lease payments that are necessary to maintain current production and execute the current mine plan. We determined development (i.e. non-sustaining) capital expenditures and finance lease payments to be those payments used to develop new operations or related to projects at existing operations where those projects will materially benefit the operation and are excluded from the calculation of AISC. The classification of sustaining and development capital projects and finance leases is based on a systematic review of our project portfolio in light of the nature of each project. Sustaining capital and finance lease payments are relevant to the AISC metric as these are needed to maintain the Company’s current operations and provide improved transparency related to our ability to finance these expenditures from current operations. The allocation of these costs to gold and other metals is determined using the same allocation used in the allocation of CAS between gold and other metals. We also allocate these costs incurred at the Other North America, Other Australia and Corporate and Other locations using the proportion of CAS between gold and other metals.
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Year Ended
December 31, 2021
Costs Applicable to Sales(1)(2)(3)
Reclamation Costs(4)
Advanced Projects, Research and Development and Exploration(5)
General and Administrative
Care and Maintenance and Other Expense, Net(6)(7)(8)
Treatment and Refining Costs
Sustaining Capital and Lease Related Costs(9)(10)
All-In Sustaining CostsOunces (000) Sold
All-In Sustaining Costs Per oz.(11)
Gold
CC&V$238 $$$— $— $— $41 $295 220 $1,338 
Musselwhite157 — — 39 206 154 1,335 
Porcupine269 13 — — — 43 330 287 1,152 
Éléonore237 — — 63 310 247 1,256 
Peñasquito395 — 31 65 505 720 702 
Other North America— — — — — — — 
North America1,296 23 32 16 31 251 1,654 1,628 1,016 
Yanacocha232 66 — 30 20 355 263 1,355 
Merian 326 — — 47 388 434 895 
Cerro Negro243 — — 23 — 60 332 267 1,247 
Other South America— — 10 — — 13 — — 
South America801 77 12 10 60 127 1,088 964 1,130 
Boddington607 11 — — 13 102 740 685 1,083 
Tanami278 — 17 — 116 418 488 855 
Other Australia— — — — 16 — — 
Australia885 13 12 18 13 224 1,174 1,173 1,002 
Ahafo425 — — 79 522 480 1,084 
Akyem261 30 — — 49 345 378 913 
Other Africa— — — — 11 — — 
Africa686 38 11 — 128 878 858 1,022 
NGM960 13 10 172 1,168 1,274 918 
Nevada960 13 10 172 1,168 1,274 918 
Corporate and Other— — 94 181 — 22 298 — — 
Total Gold$4,628 $159 $174 $223 $105 $47 $924 $6,260 5,897 $1,062 
Gold equivalent ounces - other metals(12)
Peñasquito$664 $$$$11 $115 $106 $908 1,100 $824 
Other North America— — — — — — — — 
North America664 11 115 106 910 1,100 826 
Boddington143 — — 19 172 158 1,098 
Other Australia— — — — — — — 
Australia143 — 20 174 158 1,112 
Corporate and Other— — 14 32 — — 49 — — 
Total Gold Equivalent Ounces
$807 $11 $17 $36 $11 $122 $129 $1,133 1,258 $900 
Consolidated$5,435 $170 $191 $259 $116 $169 $1,053 $7,393 
____________________________
(1)Excludes Depreciation and amortization and Reclamation and remediation.
(2)Includes by-product credits of $194 and excludes co-product revenues of $1,679.
(3)Includes stockpile and leach pad inventory adjustments of $16 at CC&V, $18 at Yanacocha and $11 at NGM.
(4)Reclamation costs include operating accretion and amortization of asset retirement costs of $79 and $91, respectively, and exclude accretion and reclamation and remediation adjustments at former operating properties and historic mining operations that have entered the closure phase and have no substantive future economic value of $52 and $1,715, respectively.
(5)Advanced projects, research and development and Exploration excludes development expenditures of $9 at CC&V, $4 at Porcupine, $3 at Éléonore, $5 at Peñasquito, $5 at Other North America, $12 at Yanacocha, $6 at Merian, $9 at Cerro Negro, $34 at Other South America, $19 at Tanami, $16
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at Other Australia, $17 at Ahafo, $6 at Akyem, $17 at NGM and $10 at Corporate and Other, totaling $172 related to developing new operations or major projects at existing operations where these projects will materially benefit the operation.
(6)Care and maintenance includes $8 at Tanami of cash care and maintenance costs associated with the site temporarily being placed into care and maintenance or operating at reduced levels in response to the COVID-19 pandemic, during the period ended December 31, 2021 that we would have continued to incur if the site was not temporarily placed into care and maintenance.
(7)Other expense, net includes incremental COVID-19 costs incurred as a result of actions taken to protect against the impacts of the COVID-19 pandemic at our operational sites of $23 for North America, $46 for South America, $8 for Australia and $5 for Africa, totaling $82.
(8)Other expense, net is adjusted for impairment of long-lived and other assets of $25, settlement costs of $11, restructuring and severance costs of $11 and incremental costs incurred relating to the COVID-19 pandemic of $5.
(9)Includes sustaining capital expenditures of $309 for North America, $127 for South America, $228 for Australia, $125 for Africa, $171 for Nevada, and $25 for Corporate and Other, totaling $985 and excludes development capital expenditures, capitalized interest and the change in accrued capital totaling $668. The following are major development projects: Pamour, Yanacocha Sulfides, Quecher Main, Cerro Negro expansion projects, Tanami Expansion 2, Power Generation Civil Upgrade, Subika Mining Method Change, Ahafo North, Goldrush Complex and Turquoise Ridge 3rd shaft.
(10)Includes finance lease payments for sustaining projects of $68 and excludes finance lease payments for development projects of $41.
(11)Per ounce measures may not recalculate due to rounding.
(12)Gold equivalent ounces is calculated as pounds or ounces produced multiplied by the ratio of the other metals price to the gold price, using Gold ($1,200/oz.), Copper ($2.75/lb.), Silver ($22.00/oz.), Lead ($0.90/lb.) and Zinc ($1.05/lb.) pricing for 2021.
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Year Ended
December 31, 2020
Costs Applicable to Sales(1)(2)(3)
Reclamation Costs(4)
Advanced Projects, Research and Development and Exploration(5)
General and Administrative
Care and Maintenance and Other Expense, Net(6)(7)
Treatment and Refining Costs
Sustaining Capital and Lease Related Costs(8)(9)
All-In Sustaining CostsOunces (000) Sold
All-In Sustaining Costs
Per oz.(10)
Gold
CC&V$245 $$11 $— $$— $41 $304 270 $1,125 
Red Lake45 — — — — 50 42 1,182 
Musselwhite117 — 25 — 27 178 97 1,838 
Porcupine244 14 — — — 39 299 319 935 
Éléonore181 — 26 — 45 258 208 1,248 
Peñasquito286 — — 20 48 53 411 512 806 
Other North America— — 10 — 18 — — 
North America1,118 16 41 10 75 48 210 1,518 1,448 1,049 
Yanacocha345 57 30 — 37 479 339 1,414 
Merian 328 — — 41 378 464 813 
Cerro Negro166 — 60 — 33 264 231 1,147 
Other South America— — 10 — — 16 — — 
South America839 64 18 12 93 — 111 1,137 1,034 1,100 
Boddington579 13 — — 11 125 731 668 1,094 
Tanami251 10 — — — 104 366 492 745 
Other Australia— — 12 — 21 — — 
Australia830 14 14 12 11 236 1,118 1,160 964 
Ahafo375 — 78 467 476 980 
Akyem234 24 — — 26 286 377 757 
Other Africa— — — — — — — — 
Africa609 33 — 104 760 853 890 
NGM1,012 12 23 10 10 160 1,229 1,336 920 
Nevada1,012 12 23 10 10 160 1,229 1,336 920 
Corporate and Other— — 75 217 — — 42 334 — — 
Total Gold$4,408 $139 $174 $269 $174 $69 $863 $6,096 5,831 $1,045 
Gold equivalent ounces - other metals(11)
Peñasquito$499 $$$— $19 $142 $106 $774 934 $828 
Boddington107 — — — 23 138 128 1,080 
Total Gold Equivalent Ounces
$606 $$$— $19 $148 $129 $912 1,062 $858 
Consolidated$5,014 $148 $175 $269 $193 $217 $992 $7,008 
____________________________
(1)Excludes Depreciation and amortization and Reclamation and remediation.
(2)Includes by-product credits of $130 and excludes co-product revenues of $1,147.
(3)Includes stockpile and leach pad inventory adjustments of $18 at Yanacocha and $24 at NGM.
(4)Reclamation costs include operating accretion and amortization of asset retirement costs of $88 and $60, respectively, and exclude accretion and reclamation and remediation adjustments at former operating properties and historic mining operations that have entered the closure phase and have no substantive future economic value of $52 and $226, respectively.
(5)Advanced projects, research and development and Exploration excludes development expenditures of $4 at CC&V, $3 at Porcupine, $1 at Éléonore, $2 at Peñasquito, $4 at Other North America, $3 at Yanacocha, $7 at Merian, $2 at Cerro Negro, $28 at Other South America, $6 at Tanami, $15 at Other Australia, $20 at Ahafo, $8 at Akyem, $3 at Other Africa, $19 at NGM and $9 at Corporate and Other, totaling $134 related to developing new operations or major projects at existing operations where these projects will materially benefit the operation.
(6)Care and maintenance includes $28 at Musselwhite, $26 at Éléonore, $38 at Peñasquito, $27 at Yanacocha, $56 at Cerro Negro and $3 at Other South America of cash care and maintenance costs associated with the sites temporarily being placed into care and maintenance or operating at reduced levels in response to the COVID-19 pandemic, during the period ended December 31, 2020 that we would have continued to incur if the sites were not temporarily placed into care and maintenance.
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(7)Other expense, net is adjusted for incremental costs of responding to the COVID-19 pandemic of $92, settlement costs of $58, impairment of long-lived and other assets of $49, Goldcorp transaction and integration costs of $23 and restructuring and severance of $18.
(8)Includes sustaining capital expenditures of $269 for North America, $111 for South America, $248 for Australia, $103 for Africa, $160 for Nevada, and $42 for Corporate and Other, totaling $933 and excludes development capital expenditures, capitalized interest and the change in accrued capital totaling $369. The following are major development projects: Musselwhite Materials Handling, Pamour, Éléonore Lower Mine Material Handling System, Quecher Main, Yanacocha Sulfides, Emilia, Tanami Expansion 2, Subika Mining Method Change, Ahafo North, Goldrush Complex, Turquoise Ridge 3rd shaft and Range Front Declines at Cortez.
(9)Includes finance lease payments for sustaining projects of $59 and excludes finance lease payments for development projects of $38.
(10)Per ounce measures may not recalculate due to rounding.
(11)Gold equivalent ounces is calculated as pounds or ounces produced multiplied by the ratio of the other metals price to the gold price, using Gold ($1,200/oz.), Copper ($2.75/lb.), Silver ($16.00/oz.), Lead ($0.95/lb.) and Zinc ($1.20/lb.) pricing for 2020.
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Year Ended
December 31, 2019
Costs Applicable to Sales(1)(2)(3)
Reclamation Costs(4)
Advanced Projects, Research and Development and Exploration (5)
General and Administrative
Other Expense, Net (6)
Treatment and Refining Costs
Sustaining Capital and Lease Related Costs(7)(8)
All-In Sustaining CostsOunces (000) Sold
All-In Sustaining Costs
Per oz.(9)
Gold
CC&V$290 $$$$$— $38 $342 319 $1,071 
Red Lake136 — — — 29 174 112 1,570 
Musselwhite13 — — — 25 46 8,174 
Porcupine185 — — — 30 221 235 935 
Éléonore214 — — 47 267 264 1,013 
Peñasquito116 — — — 39 159 144 1,100 
Other North America— — 63 — 73 — — 
North America954 13 28 64 216 1,282 1,080 1,187 
Yanacocha400 54 10 — 33 507 529 959 
Merian 297 — — 56 363 526 689 
Cerro Negro210 13 — 35 262 349 753 
Other South America— — — 11 — — — 11 — — 
South America907 60 27 16 — 124 1,143 1,404 814 
Boddington575 11 — — 14 66 669 710 942 
Tanami266 — — — 82 359 500 717 
Kalgoorlie216 — — — 31 254 228 1,114 
Other Australia— — 10 — 24 — — 
Australia1,057 17 19 10 14 188 1,306 1,438 908 
Ahafo393 20 — — 98 517 630 820 
Akyem235 32 — — 28 302 421 718 
Other Africa— — — — 12 — — 
Africa628 37 25 — 126 831 1,051 791 
NGM494 12 97 624 693 901 
Carlin358 — 64 438 408 1,076 
Phoenix116 — — 10 137 118 1,149 
Twin Creeks113 — — 23 141 177 800 
Long Canyon36 — — — 45 96 466 
Other Nevada— — — — — 10 — — 
Nevada1,117 14 30 11 12 205 1,395 1,492 935 
Corporate and Other— — 62 203 — 21 289 — — 
Total Gold$4,663 $141 $191 $313 $29 $29 $880 $6,246 6,465 $966 
Gold equivalent ounces - other metals(10)
Peñasquito$387 $$$— $$66 $116 $586 438 $1,339 
Boddington$117 $$— $— $— $$12 $139 145 $954 
Phoenix28 — — — 34 38 894 
Total Gold Equivalent Ounces
$532 $11 $$— $$75 $131 $759 621 $1,222 
Consolidated$5,195 $152 $194 $313 $36 $104 $1,011 $7,005 
____________________________
(1)Excludes Depreciation and amortization and Reclamation and remediation.
(2)Includes by-product credits of $94 and excludes co-product revenues of $691.
(3)Includes stockpile and leach pad inventory adjustments of $12 at CC&V, $16 at Yanacocha, $19 at Boddington, $20 at Akyem, $10 at NGM, $33 at Carlin, and $2 at Twin Creeks.
(4)Reclamation costs include operating accretion and amortization of asset retirement costs of $85 and $67, respectively, and exclude accretion and reclamation and remediation adjustments at former operating properties and historic mining operations that have entered the closure phase and have no substantive future economic value of $53 and $142, respectively.
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(5)Advanced projects, research and development and Exploration excludes development expenditures of $7 at CC&V, $1 at Musselwhite, $10 at Porcupine, $4 at Éléonore, $3 at Peñasquito, $4 at Other North America, $14 at Yanacocha, $7 at Merian, $9 at Cerro Negro, $40 at Other South America, $3 at Tanami, $3 at Kalgoorlie, $20 at Other Australia, $13 at Ahafo, $11 at Akyem, $4 at Other Africa, $10 at NGM, $6 at Carlin, $1 at Phoenix, $2 at Twin Creeks, $12 at Long Canyon, $2 at Other Nevada and $35 at Corporate and Other, totaling $221 related to developing new operations or major projects at existing operations where these projects will materially benefit the operation.
(6)Other expense, net is adjusted for Goldcorp transaction and integration costs of $217, Nevada JV transaction and integration costs of $30, restructuring and severance of $7, settlement costs of $5 and impairment of long-lived and other assets of $5.
(7)Includes sustaining capital expenditures of $295 for North America, $124 for South America, $185 for Australia, $123 for Africa, $207 for Nevada and $21 for Corporate and Other, totaling $955 and excludes development capital expenditures, capitalized interest and the increase in accrued capital totaling $508. The following are major development projects: Borden, Musselwhite Materials Handling, Éléonore Lower Mine Material Handling System, Quecher Main, Yanacocha Sulfides, Tanami Expansion 2, Ahafo North, Subika Underground, Ahafo Mill Expansion, Goldrush Complex and Turquoise Ridge 3rd shaft.
(8)Includes finance lease payments for sustaining projects of $56 and excludes finance lease payments for development projects of $31.
(9)Per ounce measures may not recalculate due to rounding.
(10)Gold equivalent ounces is calculated as pounds or ounces produced multiplied by the ratio of the other metals price to the gold price, using Gold ($1,200/oz.), Copper ($2.75/lb.), Silver ($15.00/oz.), Lead ($0.90/lb.) and Zinc ($1.05/lb.) pricing.
Accounting Developments
For a discussion of Recently Adopted and Recently Issued Accounting Pronouncements, see Note 2 to the Consolidated Financial Statements.
Critical Accounting Estimates
Our discussion of financial condition and results of operations is based upon the information reported in our Consolidated Financial Statements. The preparation of these Consolidated Financial Statements in conformity with U.S. generally accepted accounting principles (“GAAP”) requires us to make assumptions and estimates that affect the reported amounts of assets, liabilities, revenues, and expenses, as well as the disclosure of contingent assets and liabilities as of the date of our financial statements. We have identified the accounting estimates listed below as critical to understanding and evaluating the financial results reported in our Consolidated Financial Statements. These accounting estimates require the application of significant management judgment and are critical due to the significant level of estimation uncertainty regarding the assumptions involved and the magnitude of the asset, liability, revenue or expense being reported. We base our assumptions and estimates on historical experience and various other sources that we believe to be reasonable under the circumstances. We review the underlying factors used in our estimates regularly, including reviewing the significant accounting policies impacting the estimates, to ensure compliance with U.S. GAAP. However, due to the uncertainty inherent in our estimates, actual results may materially differ from the estimates we calculate due to changes in circumstances, global economics and politics, and general business conditions. A summary of our significant accounting policies is detailed in Note 2 to the Consolidated Financial Statements. 
Depreciation and amortization
Expenditures for new facilities or equipment and expenditures that extend the useful lives of existing facilities or equipment are capitalized and depreciated using the straight-line method at rates sufficient to amortize such costs over the estimated future lives of such facilities or equipment and their components. Facilities and equipment acquired as a part of a finance lease, build-to-suit or other financing arrangement are recorded based on the contractual lease terms. The facilities and equipment are depreciated using the straight-line method at rates sufficient to depreciate such costs over the lesser of the lease terms or the estimated productive lives of such facilities. These lives do not exceed the estimated mine life based on proven and probable reserves as the useful lives of these assets are considered to be limited to the life of the relevant mine.
Costs incurred to develop new properties are capitalized as incurred where it has been determined that the property can be economically developed based on the existence of proven and probable reserves. At our surface mines, these costs include costs to further delineate the ore body and remove overburden to initially expose the ore body. At our underground mines, these costs include the cost of building access ways, shaft sinking and access, lateral development, drift development, ramps and infrastructure development. All such costs are amortized using the units-of-production (“UOP”) method over the estimated life of the ore body based on estimated recoverable ounces or pounds to be produced from proven and probable reserves.
Major mine development costs incurred after the commencement of production, that are capitalized, are amortized using the UOP method based on estimated recoverable ounces or pounds to be produced from proven and probable reserves. To the extent that such costs benefit the entire ore body, they are amortized over the estimated recoverable ounces or pounds in proven and probable reserves of the entire ore body. Costs incurred to access specific ore blocks or areas that only provide benefit over the life of that block or area are amortized over the estimated recoverable ounces or pounds in proven and probable reserves of that specific ore block or area.
Capitalized asset retirement costs incurred are amortized according to how the related assets are being depreciated. Open pit and underground mining costs are amortized using the UOP method based on recoverable ounces by source. Other costs, including
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leaching facilities, tailing facilities, and mills and other infrastructure costs, are amortized using the straight-line method over the same estimated future lives of the associated assets.
The calculation of the UOP rate of amortization, and therefore the annual amortization charge to operations, could be materially impacted to the extent that actual production in the future is different from current forecasts of production based on proven and probable reserves. This would generally occur to the extent that there were significant changes in any of the factors or assumptions used in determining reserves. These changes could include: (i) an expansion of proven and probable reserves through exploration activities; (ii) differences between estimated and actual costs of production, due to differences in grade, metal recovery rates and foreign currency exchange rates; and (iii) differences between actual commodity prices and commodity price assumptions used in the estimation of reserves. If reserves decreased significantly, amortization charged to operations would increase; conversely, if reserves increased significantly, amortization charged to operations would decrease. Such changes in reserves could similarly impact the useful lives of assets depreciated on a straight-line basis, where those lives are limited to the life of the mine, which in turn is limited to the life of the proven and probable reserves.
The expected useful lives used in depreciation and amortization calculations are determined based on applicable facts and circumstances, as described above. Significant judgment is involved in the determination of useful lives, and no assurance can be given that actual useful lives will not differ significantly from the useful lives assumed for the purpose of depreciation and amortization calculations.
Carrying value of stockpiles
Stockpiles represent ore that has been extracted from the mine and is available for further processing. Mine sequencing may result in mining material at a faster rate than can be processed. We generally process the highest ore grade material first to maximize metal production; however, a blend of ore stockpiles may be processed to balance hardness and/or metallurgy in order to maximize throughput and recovery. Processing of lower grade stockpiled ore may continue after mining operations are completed. Sulfide copper ores are subject to oxidation over time which can reduce expected future recoveries. Stockpiles are measured by estimating the number of tons added and removed from the stockpile, the number of contained ounces or pounds (based on assay data), and the estimated metallurgical recovery rates (based on the expected processing method). Stockpile ore tonnages are verified by periodic surveys. Costs are added to stockpiles based on current mining costs, including applicable overhead and depreciation and amortization relating to mining operations and removed at each stockpile’s average cost per recoverable unit as material is processed.
We record stockpiles at the lower of average cost or net realizable value, and carrying values are evaluated at least quarterly. Net realizable value represents the estimated future sales price based on short-term and long-term metals price assumptions that are applied to expected short-term (12 months or less) and long-term sales from stockpiles, less estimated costs to complete production and bring the product to sale. The primary factors that influence the need to record write-downs of stockpiles include declines in short-term or long-term metals prices, increases in costs for production inputs such as labor, fuel and energy, materials and supplies, as well as realized mineral grades and recovery rates. The significant assumption in determining the stockpile net realizable value for each mine site at December 31, 2021 is a long-term gold price of $1,500 per ounce. A decrease of $100 per ounce in the long-term gold price assumption will not result in a material write-down to the carrying value of the stockpiles.
Other assumptions include future operating and capital costs, metal recoveries, production levels, commodity prices, proven and probable reserve quantities, engineering data and other factors unique to each operation based on the life of mine plans, as well as long-term commodity prices and applicable U.S. dollar long-term exchange rates. If short-term and long-term commodity prices decrease, estimated future processing costs increase, or other negative factors occur, it may be necessary to record a write-down of stockpiles. A high degree of judgment is involved in determining such assumptions and estimates and no assurance can be given that actual results will not differ significantly from those estimates and assumptions.
Refer to Note 18 of the Consolidated Financial Statements for further information regarding stockpiles.
Carrying value of ore on leach pads
Ore on leach pads represent ore that has been mined and placed on leach pads where a solution is applied to the surface of the heap to dissolve the gold, copper or silver. Costs are added to ore on leach pads based on current mining costs, including applicable depreciation and amortization relating to mining operations. Costs are removed from ore on leach pads as ounces or pounds are recovered based on the average cost per estimated recoverable ounce of gold or silver or pound of copper on the leach pad.
Estimates of recoverable ore on the leach pads are calculated from the quantities of ore placed on the leach pads (measured tons added to the leach pads), the grade of ore placed on the leach pads (based on assay data) and a recovery percentage (based on ore type). In general, leach pads recover between 50% and 95% of the recoverable ounces in the first year of leaching, declining each year thereafter until the leaching process is complete.
Although the quantities of recoverable metal placed on the leach pads are reconciled by comparing the grades of ore placed on pads to the quantities of metal actually recovered (metallurgical balancing), the nature of the leaching process inherently limits the ability to precisely monitor inventory levels. As a result, the metallurgical balancing process is constantly monitored and estimates are refined based on actual results over time. Historically, our operating results have not been materially impacted by variations between
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the estimated and actual recoverable quantities of metal on our leach pads. Variations between actual and estimated quantities resulting from changes in assumptions and estimates that do not result in write-downs to net realizable value are accounted for on a prospective basis. The significant assumption in determining the net realizable value for each mine site at December 31, 2021 is a long-term gold price of $1,500 per ounce. A decrease of $100 per ounce in the long-term gold price assumption will not result in a material write-down to the carrying value of the leach pads.
Other assumptions include future operating and capital costs, metal recoveries, production levels, proven and probable reserve quantities, engineering data and other factors unique to each operation based on the life of mine plans, as well as a long-term metal prices. If short-term and long-term commodity prices decrease, estimated future processing costs increase, or other negative factors occur, it may be necessary to record a write-down of ore on leach pads to net realizable value.
Refer to Note 18 of the Consolidated Financial Statements for further information regarding ore on leach pads.
Carrying value of long-lived assets
We review and evaluate our long-lived assets for impairment when events or changes in circumstances indicate that the related carrying amounts may not be recoverable. Significant negative industry or economic trends, adverse social or political developments, declines in our market capitalization, geo-technical difficulties, reduced estimates of future cash flows from our reporting segments or other disruptions to our business are a few examples of events that we monitor, as they could indicate that the carrying value of the Company’s long-lived assets, including development projects, may not be recoverable. In such cases, a recoverability test may be necessary to determine if an impairment charge is required.
For development projects, including our Conga project which is discussed further below, we review and evaluate changes to project plans and timing to determine continued technical, economic and social viability of the projects. If the Company determines to sell or abandon a project due to uncertainty from changes in circumstances related to technical, economic, social, political or community factors, or other evolving circumstances indicate that the carrying value may not be recoverable, then a recoverability test is performed to determine if an impairment charge should be recorded.
An impairment loss is measured and recorded based on the estimated fair value of the long-lived assets being tested for impairment and their carrying amounts. Fair value is typically determined through the use of an income approach utilizing estimates of discounted pre-tax future cash flows or a market approach utilizing recent transaction activity for comparable properties. These approaches are primarily considered Level 3 fair value measurements. Occasionally, such as when an asset is held for sale, market prices are used. We believe our estimates and models used to determine fair value are similar to what a market participant would use.
The estimated undiscounted cash flows used to assess recoverability of long-lived assets and to measure the fair value of our mining operations are derived from current business plans, which are developed using short-term price forecasts reflective of the current price environment and our projections for long-term average metal prices. In addition to short- and long-term metal price assumptions, other assumptions include estimates of commodity-based and other input costs; proven and probable mineral reserves estimates, including the timing and cost to develop and produce the reserves; value beyond proven and probable reserve estimates; estimated future closure costs; and the use of appropriate discount rates.
The significant assumption in determining the future cash flows for each mine site at December 31, 2021 is a long-term gold price of $1,500 per ounce. A decrease of $100 per ounce in the long-term gold price assumption could result in an impairment of our long-lived assets, including goodwill, of up to approximately $2,500 before consideration of other value beyond proven and probable reserves which may significantly decrease the amount of any potential impairment charge.
Other assumptions include proven and probable mineral reserve estimates, value beyond proven and probable reserve estimates, the timing and cost to develop and produce the reserves, commodity-based and other input costs, future closure costs and discount rates unique to each operation, as well as a long-term metal prices and applicable U.S. dollar long-term exchange rates. Refer to Quantitative and Qualitative Disclosures.
As discussed above under Depreciation and amortization, various factors could impact our ability to achieve our forecasted production schedules from proven and probable reserves which could impact the carrying value of our long-lived assets. The ability to achieve the estimated quantities of recoverable minerals from exploration stage mineral interests involves further risks in addition to those factors applicable to mineral interests where proven and probable reserves have been identified, due to the lower level of confidence that the identified measured, indicated and inferred resources could ultimately be mined economically. Assets classified as exploration potential have the highest level of risk that the carrying value of the asset can be ultimately realized, due to the still lower level of geological confidence and economic modeling.
Events that could result in additional impairment of our long-lived assets include, but are not limited to, decreases in future metal prices, unfavorable changes in foreign exchange rates, increases in future closure costs, and any event that might otherwise have a material adverse effect on mine site cash flows.
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Goodwill
Goodwill represents the excess of the purchase price over the estimated fair value of the net assets acquired in a business acquisition. Goodwill is allocated to reporting units and tested for impairment annually as of December 31, 2021 and when events or changes in circumstances indicate that the carrying value of a reporting unit exceeds its fair value. Each operating mine is considered a distinct reporting unit for purposes of goodwill impairment testing.
The Company may elect to perform a qualitative assessment when it is more likely than not that the fair value of a reporting unit is higher than its carrying value. If the Company determines that it is more likely than not that the fair value is less than the carrying value, a quantitative goodwill impairment test is performed to determine the fair value of the reporting unit. The fair value of a reporting unit is determined using either the income approach utilizing estimates of discounted future cash flows or the market valuation approach utilizing recent transaction activity for comparable properties. These approaches are considered Level 3 fair value measurements. If the carrying amount of the reporting unit exceeds its fair value, an impairment loss is recognized in an amount equal to that excess, limited to the total amount of goodwill allocated to that reporting unit. Any impairment loss recognized in the current period is not reversed in the future periods. The Company recognizes its pro rata share of Goodwill and any subsequent goodwill impairment losses recorded by entities that are proportionately consolidated.
When the income approach is utilized to determine fair value, the estimated cash flows used to assess the fair value of a reporting unit are derived from the Company’s current business plans, which are developed using short-term price forecasts reflective of the current price environment and management’s projections for long-term average metal prices. The significant assumption in determining the future cash flows for each mine site at December 31, 2021 is a long-term gold price of $1,500 per ounce. In addition to short- and long-term metal price assumptions, other assumptions include estimates of commodity-based and other input costs; proven and probable mineral reserves estimates, including the timing and cost to develop and produce the reserves; value beyond proven and probable estimates; and the use of appropriate discount rates.
Fair value determinations require considerable judgment and are sensitive to changes in underlying assumptions and factors. For testing purposes of our reporting units, management's best estimates of the expected future results are the primary driver in determining the fair value. As a result, there can be no assurance that the estimates and assumptions made for purposes of the goodwill impairment tests will prove to be an accurate prediction of the future. Examples of events or circumstances that could reasonably be expected to negatively affect the underlying key assumptions and ultimately impact the estimated fair value of our reporting units include, but are not limited to, such items as: (i) a decrease in forecasted production levels if we are unable to realize the mineable reserves, resources and exploration potential at our mining properties and extend the life of mine (ii) increased production or capital costs (iii) adverse changes in macroeconomic conditions including the market price of metals and changes in the equity and debt markets or country specific factors which could result in higher discount rates, (iv) significant unfavorable changes in tax rates including increased corporate income or mining tax rates, and (v) negative changes in regulation, legislation, and political environments which could impact our ability to operate in the future. While historical performance and current expectations have resulted in fair values of our reporting units equal to or in excess of carrying values, if our assumptions are not realized, it is possible that an impairment charge may need to be recorded in the future.
Carrying value of Conga
We review and evaluate the Company’s Conga development project for recoverability whenever events or changes in circumstances indicate that the carrying amount may not be recoverable. We have considered a variety of technical, economic, social and political developments related to the Conga project during our evaluation of impairment indicators since November 2011, when construction and development activities at the project were largely suspended. Project activities in recent years have focused on continued engagement with the local communities and maintaining and protecting existing project infrastructure and equipment through our active care and maintenance program. Although we have reclassified Conga reserves to resources and reallocated exploration and development capital to other projects, we continue to evaluate long-term options to progress development of the Conga project and improve social and political acceptance. We have reprioritized the Yanacocha Sulfides project ahead of the Conga project. The Company also periodically updates the economic model for its Conga project to understand changes to the estimated capital costs, cash flows, and economic returns from the project. As of December 31, 2021, we have not identified events or changes in circumstances that indicate that the carrying value of the Conga project is not recoverable.
Reclamation and remediation obligations
The Company records the estimated asset retirement obligations associated with operating and non-operating mine sites when an obligation is incurred and the fair value can be reasonably estimated. Fair value is measured as the present value of expected cash flow estimates, after considering inflation, our credit-adjusted risk-free rates and a market risk premium appropriate for our operations. Reclamation costs are allocated to expense over the life of the related assets and are periodically adjusted to reflect changes in the estimated present value resulting from the passage of time and revisions to the estimates of either the timing or amount of the reclamation costs. Reclamation obligations are based on our best estimate of when the expected spending for an existing environmental disturbance will occur. Our cost estimates are reflected on a third-party cost basis and comply with our legal obligation to retire long-lived assets in the period incurred. Changes in reclamation estimates at non-operating mines where the mine or portion of the mine site has entered the closure phase and has no substantive future economic value are reflected in earnings in the period an
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estimate is revised. Costs included in estimated asset retirement obligations are discounted to their present value and are estimated over a period of up to fifty years. We review, on at least an annual basis, the reclamation obligation at each mine.
Remediation costs are accrued when it is probable that an obligation has been incurred and the cost can be reasonably estimated. Such cost estimates may include ongoing care, maintenance and monitoring costs. Changes in remediation estimates at non-operating mines are reflected in earnings in the period an estimate is revised. Water treatment costs included in environmental remediation obligations are discounted to their present value and are estimated over a period of up to fifty years.
Accounting for reclamation and remediation obligations requires management to make estimates unique to each mining operation of the future costs the Company expects to incur to complete the reclamation and remediation work required to comply with existing laws and regulations. These estimates require considerable judgment and are sensitive to changes in underlying inputs and assumptions. Such changes, including, but not limited to, (i) changes to environmental laws and regulations, which could increase the scope and extent of work required, (ii) changes in the timing of reclamation and remediation activities, which could occur over an extended future period and (iii) changes in the methods and technology utilized to settle reclamation and remediation obligations, could have a material impact on our business, financial condition, results of operations and cash flows.
Refer to Note 6 of the Consolidated Financial Statements for further information regarding reclamation and remediation obligations.
Income and mining taxes
We account for income taxes using the liability method, recognizing certain temporary differences between the financial reporting basis of our liabilities and assets and the related income tax basis for such liabilities and assets. This method generates either a net deferred income tax liability or asset for us, as measured by the statutory tax rates in effect. We derive our deferred income tax charge or benefit by recording the change in either the net deferred income tax liability or asset balance for the year. The financial statement effects of changes in tax law are recorded as discrete items in the period enacted as part of income tax expense or benefit from continuing operations, regardless of the category of income or loss to which the deferred taxes relate. We have exposure to the impact of foreign exchange fluctuations on tax positions in certain jurisdictions, such movements are recorded within Income and mining tax benefit (expense) related to deferred income tax assets and liabilities, as well as non-current uncertain tax positions, while foreign exchange fluctuations impacting current tax positions are recorded within Other income (loss), net as foreign currency exchange gains (losses). With respect to the earnings that we derive from the operations of our consolidated subsidiaries, in those situations where the earnings are indefinitely reinvested, no deferred taxes have been provided on the unremitted earnings (including the excess of the carrying value of the net equity of such entities for financial reporting purposes over the tax basis of such equity) of these consolidated companies.
Mining taxes represent state and provincial taxes levied on mining operations and are classified as income taxes as such taxes are based on a percentage of mining profits.
Our operations are in multiple jurisdictions where uncertainties arise in the application of complex tax regulations. Some of these tax regimes are defined by contractual agreements with the local government, while others are defined by general tax laws and regulations. We are subject to reviews of our income tax filings and other tax payments, and disputes can arise with the taxing authorities over the interpretation of its contracts or laws. We recognize potential liabilities and record tax liabilities for anticipated tax audit issues in the U.S. and other tax jurisdictions based on our estimate of whether it is more likely than not, and the extent to which, additional taxes will be due. We adjust these reserves in light of changing facts and circumstances; however, due to the complexity of some of these uncertainties, the ultimate resolution may result in a payment that is materially different from our current estimate of the tax liabilities. If our estimate of tax liabilities proves to be less than the ultimate assessment, an additional charge to expense would result. If the estimate of tax liabilities proves to be greater than the ultimate assessment, a tax benefit would result. We recognize interest and penalties, if any, related to unrecognized tax benefits in Income and mining tax benefit (expense). In certain jurisdictions, we must pay a portion of the disputed amount to the local government in order to formally appeal the assessment. Such payment is recorded as a receivable if we believe the amount is ultimately collectible.
Valuation of deferred tax assets
Our deferred income tax assets include certain future tax benefits. We record a valuation allowance against any portion of those deferred income tax assets when we believe, based on the weight of available evidence, it is more likely than not that some portion or all of the deferred income tax asset will not be realized. We review the likelihood that we will realize the benefit of our deferred tax assets and therefore the need for valuation allowances on a quarterly basis, or more frequently if events indicate that a review is required. In determining the requirement for a valuation allowance, the historical and projected financial results of the legal entity or consolidated group recording the net deferred tax asset is considered, along with all other available positive and negative evidence.
Certain categories of evidence carry more weight in the analysis than others based upon the extent to which the evidence may be objectively verified. We look to the nature and severity of cumulative pretax losses (if any) in the current three-year period ending on the evaluation date or the expectation of future pretax losses and the existence and frequency of prior cumulative pretax losses.
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We utilize a rolling twelve quarters of pre-tax income or loss as a measure of our cumulative results in recent years. Concluding that a valuation allowance is not required is difficult when there is significant negative evidence which is objective and verifiable, such as cumulative losses in recent years. However, a cumulative three year loss is not solely determinative of the need for a valuation allowance. We also consider all other available positive and negative evidence in our analysis.
Other factors considered in the determination of the probability of the realization of the deferred tax assets include, but are not limited to:
Earnings history;
Projected future financial and taxable income based upon existing reserves and long-term estimates of commodity prices;
The duration of statutory carry forward periods;
Prudent and feasible tax planning strategies readily available that may alter the timing of reversal of the temporary difference;
Nature of temporary differences and predictability of reversal patterns of existing temporary differences; and
The sensitivity of future forecasted results to commodity prices and other factors.
The Company assesses available positive and negative evidence to estimate if sufficient future taxable income will be generated to utilize the existing deferred tax assets. A significant piece of objective negative evidence is recent pretax losses and/or expectations of future pretax losses. Such objective evidence limits the ability to consider other subjective evidence including projections for future growth. On the basis of this evaluation, a valuation allowance has been recorded in Peru. The amount of the deferred tax asset considered realizable, however, could be adjusted if estimates of future taxable income during the carryforward period are increased or if objective negative evidence in the form of cumulative losses is no longer present and additional weight may be given to subjective evidence such as our projections for growth.
See Note 12 to the Consolidated Financial Statements for additional detail on the valuation allowance.
For additional risk factors that could impact the Company’s ability to realize the deferred tax assets, see Note 2 to the Consolidated Financial Statements.
Business Combinations
We recognize and measure the assets acquired and liabilities assumed in a business combination based on their estimated fair values at the acquisition date, while transaction and integration costs related to business combinations are expensed as incurred. Any excess of the purchase consideration when compared to the fair value of the net tangible and intangible assets acquired, if any, is recorded as goodwill. For material acquisitions, we engage independent appraisers to assist with the determination of the fair value of assets acquired, liabilities assumed, noncontrolling interest, if any, and goodwill, based on recognized business valuation methodologies. An income, market or cost valuation method may be utilized to estimate the fair value of the assets acquired, liabilities assumed, and noncontrolling interest, if any, in a business combination. The income valuation method represents the present value of future cash flows over the life of the asset using: (i) discrete financial forecasts, which rely on management’s estimates of reserve quantities and exploration potential, costs to produce and develop reserves, revenues, and operating expenses; (ii) long-term growth rates; (iii) appropriate discount rates; and (iv) expected future capital requirements (“income valuation method”). The market valuation method uses prices paid for a similar asset by other purchasers in the market, normalized for any differences between the assets (“market valuation method”). The cost valuation method is based on the replacement cost of a comparable asset at the time of the acquisition adjusted for depreciation and economic and functional obsolescence of the asset (“cost valuation method”). The fair value of property, plant and mine development is estimated to include the fair value of asset retirement costs of related long-lived tangible assets. If the initial accounting for the business combination is incomplete by the end of the reporting period in which the acquisition occurs, an estimate will be recorded. Subsequent to the acquisition date, and not later than one year from the acquisition date, we will record any material adjustments to the initial estimate based on new information obtained that would have existed as of the date of the acquisition. Any adjustment that arises from information obtained that did not exist as of the date of the acquisition will be recorded in the period the adjustments arises.
ITEM 7A.       QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK (dollars in millions, except per ounce and per pound amounts).
Metal Prices
Changes in the market price of gold significantly affect our profitability and cash flow. Gold prices can fluctuate widely due to numerous factors, such as demand; forward selling by producers; central bank sales, purchases and lending; investor sentiment; the strength of the U.S. dollar; inflation, deflation, or other general price instability; and global mine production levels. Changes in the market price of copper, silver, lead and zinc also affect our profitability and cash flow. These metals are traded on established international exchanges and prices generally reflect market supply and demand, but can also be influenced by speculative trading in the commodity or by currency exchange rates. The Company does not currently hold instruments that are designated to hedge against the potential impacts due to market price changes in metals. Consideration of these impacts are discussed below.
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Decreases in the market price of metals can significantly affect the value of our product inventory, stockpiles and leach pad inventory, and it may be necessary to record a write-down to the net realizable value. Net realizable value represents the estimated future sales price based on short-term and long-term metals prices, less estimated costs to complete production and bring the product to sale. The primary factors that influence the need to record write-downs of our stockpiles, leach pads and product inventory include short-term and long-term metals prices and costs for production inputs such as labor, fuel and energy, materials and supplies as well as realized ore grades and recovery rates. The significant assumptions in determining the stockpile, leach pad and product inventory adjustments for each mine site reporting unit at December 31, 2021 included production cost and capitalized expenditure assumptions unique to each operation, and the following short-term and long-term assumptions:
Short-term AssumptionLong-term Assumption
Gold price (per ounce)$1,795 $1,500 
Copper price (per pound)$4.40 $3.00 
Silver price (per ounce)$23.33 $20.00 
Lead price (per pound)$1.06 $1.05 
Zinc price (per pound)$1.53 $1.30 
U.S. to Australian dollar exchange rate$0.73 $0.77 
U.S. to Canadian dollar exchange rate$0.79 $0.80 
U.S. dollar to Mexican Peso exchange rate$0.05 $0.05 
U.S. dollar to Argentinian Peso exchange rate$0.01 $0.01 
The net realizable value measurement involves the use of estimates and assumptions unique to each mining operation regarding current and future operating and capital costs, metal recoveries, production levels, commodity prices, proven and probable reserve quantities, engineering data and other factors. A high degree of judgment is involved in determining such assumptions and estimates and no assurance can be given that actual results will not differ significantly from those estimates and assumptions. For information concerning the sensitivity of our stockpiles and ore on leach pads to changes in metal price, see the Critical Accounting Estimates section in Item 7, Management’s Discussion and Analysis of Consolidated Financial Condition and Results of Operation.
Decreases in the market price of metals can also significantly impact our impairment analysis for long-lived assets and goodwill. For information concerning the sensitivity of our impairment analysis over long-lived assets and goodwill to changes in metal price, see the Critical Accounting Estimates section in Item 7, Management’s Discussion and Analysis of Consolidated Financial Condition and Results of Operation, and Note 2 and Note 20 to the Consolidated Financial Statements.
Interest Rate Risk
We are subject to interest rate risk related to the fair value of our senior notes which consist of fixed rates. For fixed rate debt, changes in interest rates generally affect the fair value of the debt instrument, but not our earnings or cash flows. The terms of our fixed rate debt obligations do not generally allow investors to demand payment of these obligations prior to maturity. Therefore, we do not have significant exposure to interest rate risk for our fixed rate debt; however, we do have exposure to fair value risk if we repurchase or exchange long-term debt prior to maturity which could be material. See Note 15 to our Consolidated Financial Statements for further information pertaining to the fair value of our fixed rate debt.
Foreign Currency
In addition to our operations in the United States, we have significant operations and/or assets in Canada, Mexico, Dominican Republic, Peru, Suriname, Argentina, Chile, Australia and Ghana. All of our operations sell their gold, copper, silver, lead and zinc production based on U.S. dollar metal prices. Foreign currency exchange rates can fluctuate widely due to numerous factors, such as supply and demand for foreign and U.S. currencies and U.S. and foreign country economic conditions. Fluctuations in the local currency exchange rates in relation to the U.S. dollar can increase or decrease profit margins, cash flow and Costs applicable to sales per ounce/ pound to the extent costs are paid in local currency at foreign operations.
Commodity Price Exposure
Our provisional metal sales contain an embedded derivative that is required to be separated from the host contract for accounting purposes. The host contract is the receivable from the sale of the respective metal concentrates at the prevailing indices’ prices at the time of sale. The embedded derivative, which is not designated for hedge accounting, is marked to market through earnings each period prior to final settlement.
We perform an analysis on the provisional concentrate sales to determine the potential impact to Net income (loss) attributable to Newmont stockholders for each 10% change to the average price on the provisional concentrate sales subject to final pricing over the next several months. Refer below for our analysis as of December 31, 2021.
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Provisionally Priced Sales
Subject to Final Pricing
Average Provisional
Price (per ounce/pound)
Effect of 10% change in Average Price (millions)
Market Closing
Settlement Price (1)
(per ounce/pound)
Gold (ounces/thousands) 171 $1,807 $20 $1,806 
Copper (pounds/millions)25 $4.39 $$4.40 
Silver (ounces/millions)$23.09 $$23.09 
Lead (pounds/millions)22 $1.06 $$1.06 
Zinc (pounds/millions)58 $1.62 $$1.65 
____________________________
(1)The closing settlement price as of December 31, 2021 is determined utilizing the London Metal Exchange for copper, lead and zinc and the LBMA for gold and silver.
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ITEM 8.       FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
INDEX TO FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
Page
Report of Independent Registered Public Accounting Firm (PricewaterhouseCoopers LLP; PCAOB ID: 271)

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors and Stockholders of Newmont Corporation
Opinion on the Financial Statements
We have audited the accompanying consolidated balance sheets of Newmont Corporation (the Company) as of December 31, 2021 and 2020, the related consolidated statements of operations, comprehensive income (loss), changes in equity and cash flows for each of the three years in the period ended December 31, 2021, the related notes and the financial statement schedule in Item 15(a)(2) (collectively referred to as the “consolidated financial statements”). In our opinion, based on our audits and the report of other auditors, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at December 31, 2021 and 2020, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2021, in conformity with U.S. generally accepted accounting principles.

We did not audit the financial statements of Nevada Gold Mines LLC, a 38.5% owned investment which is proportionately consolidated, which reflects total assets constituting 19% and 19% at December 31, 2021 and 2020, respectively, and sales constituting 19%, 21%, and 10% and net income constituting 327%, 24%, and 7% in 2021, 2020, and 2019, respectively, of the related consolidated totals. Those statements were audited by other auditors whose report has been furnished to us, and our opinion, insofar as it relates to the amounts included for Nevada Gold Mines LLC, is based solely on the report of the other auditors.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Company's internal control over financial reporting as of December 31, 2021, based on criteria established in Internal Control-Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission 2013 framework, and our report dated February 24, 2022 expressed an unqualified opinion thereon, based on our audit and the report of the other auditors.

Basis for Opinion
These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company’s financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits and the report of other auditors provide a reasonable basis for our opinion.

Critical Audit Matters
The critical audit matters communicated below are matters arising from the current period audit of the financial statements that were communicated or required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matters below, providing separate opinions on the critical audit matters or on the accounts or disclosures to which they relate.
Reclamation Liabilities
Description of the Matter
As discussed in Notes 2, 6 and 26 of the consolidated financial statements, the Company’s mining and exploration activities are subject to various domestic and international laws and regulations governing the protection of the environment. Reclamation obligations are recognized when incurred and recorded as liabilities at fair value. Reclamation liabilities are periodically adjusted to reflect changes in the estimated present value resulting from revisions to the estimates of either the timing or amount of the reclamation costs.

Auditing management’s accounting for reclamation liabilities was challenging, as significant judgment is required by the Company to estimate required cash flows to meet obligations established by mining permit, local statutes and promissory estoppel at the end of mine life as well as estimation of uncertainty inherent in the cash flows. The significant judgment was primarily related to the inherent estimation uncertainty relating to the extent of future reclamation activities and related costs.
111

How We Addressed the Matter in Our Audit
We obtained an understanding, evaluated the design, and tested the operating effectiveness of the controls over the Company’s accounting for reclamation liabilities, including controls over management’s review of estimated future costs, premiums for uncertainty and the reclamation liability calculation.

To test the reclamation liabilities, among other procedures, we evaluated the methodology, significant assumptions and the underlying data used by the Company in its estimate. To assess the estimates of reclamation activities and cash flows, we evaluated significant changes from the prior estimate, verified consistency between timing of reclamation activities and projected mine life, compared anticipated costs across the Company’s mines, verified cost rates against third-party information or internal cost records and recalculated management’s estimate. We also evaluated the significant assumptions included in the fair value calculation, including market risk premium, cost inflation, and credit-adjusted risk-free rate. We involved our reclamation specialists to interview members of the Company’s engineering staff, assess the completeness of the mine reclamation estimates with respect to meeting mine closure and post closure requirements, and evaluate the reasonableness of the engineering estimates and assumptions.
Annual goodwill impairment assessment
Description of the Matter
As discussed in Notes 2 and 20 to the consolidated financial statements, management conducts a goodwill impairment assessment annually at December 31, and when events or changes in circumstances indicate that the carrying value of a reporting unit exceeds its fair value. If the Company determines it is more likely than not that the fair value is less than the carrying value, a quantitative impairment test is performed to determine the fair value of the reporting unit. The fair value of a reporting unit in a quantitative assessment is determined through the use of the income approach using estimates of future cash flows attributable to the respective reporting units.

Auditing management’s quantitative fair value assessment was especially challenging, as significant judgment is required by the company to estimate future cash flows and the cost of capital rates attributable to the respective reporting units, and changes in management’s assumptions could have a significant impact on either the fair value, the amount of impairment charge, or both. The estimated future cash flows used to determine the fair values of reporting units are derived from current business plans, which are developed using short-term price forecasts reflective of the current price environment and management’s projections for long-term metal prices, proven and probable mineral reserves estimates, including the timing and cost to develop and produce the reserves, and value beyond proven and probable. A high degree of auditor judgment and an increased extent of effort was required when performing audit procedures to evaluate the reasonableness of management’s estimates and assumptions under the quantitative assessment.
How We Addressed the Matter in Our Audit
We obtained an understanding, evaluated the design, and tested the operating effectiveness of the controls over the assessment of goodwill impairment, including those over the determination of fair value, such controls related to management’s development of future cash flows and the cost of capital.

To test the estimated fair value of each reporting unit assessed quantitatively, we performed audit procedures that included, among others, the evaluation of significant assumptions and the underlying data used by the Company in its estimate. To assess the reasonableness of estimated future cash flows, we evaluated management’s projections against historical operating results, evaluated management’s ability to accurately forecast future cash flows by comparing actual results to historical forecasts, compared the Company’s short-term and long-term metal price projections to third-party sources, and verified the consistency between management’s projections and the Company’s qualified person’s estimate of proven and probable reserves and resources. To test estimates of the fair value of mineralization for value beyond proven and probable for reporting units assessed quantitatively, we evaluated significant changes from prior estimates and interviewed members of the Company’s engineering staff regarding each deposit’s characteristics. We involved our valuation specialist to evaluate the reasonableness of the cost of capital rates assigned to each reporting unit assessed quantitatively, considering the specific risk profile of each location in which the respective reporting unit resides and to assist in reviewing the valuation methods selected by management.

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/s/ Ernst & Young LLP
We have served as the Company’s auditor since 2014.
Denver, Colorado
February 24, 2022



















113

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Managers and Members of Nevada Gold Mines LLC

Opinions on the Financial Statements and Internal Control over Financial Reporting
We have audited the consolidated balance sheets of Nevada Gold Mines LLC and its subsidiaries (together, the Joint Venture) as of December 31, 2021 and 2020, and the related consolidated statements of operations and comprehensive income, of changes in members’ equity and of cash flows for the years then ended, including the related notes (collectively referred to as the consolidated financial statements) (not presented herein). We also have audited the Joint Venture's internal control over financial reporting as of December 31, 2021, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO).

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Joint Venture as of December 31, 2021 and 2020, and the results of its operations and its cash flows for the years then ended in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Joint Venture maintained, in all material respects, effective internal control over financial reporting as of December 31, 2021, based on criteria established in Internal Control – Integrated Framework (2013) issued by the COSO.

Basis for Opinions
The Joint Venture’s management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the Management’s Report on Internal Control over Financial Reporting (not presented herein). Our responsibility is to express opinions on the Joint Venture’s consolidated financial statements and on the Joint Venture’s internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Joint Venture in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control over Financial Reporting
An entity’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. An entity’s internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the entity; (ii) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the entity are being made only in accordance with authorizations of management and directors of the entity; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the entity’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Critical Audit Matters
The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the Board of Managers (acting in a role equivalent to the audit committee) and that (i) relates to accounts or disclosures that are material to the consolidated financial statements and (ii) involved especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.
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Qualitative Goodwill Impairment Assessment
As described in note 2 to the Joint Venture’s consolidated financial statements, the Joint Venture’s goodwill balance was $696 million (at a 100 percent economic interest) as of December 31, 2021. Goodwill is allocated to reporting units and assessed for impairment annually, in the fourth quarter of the fiscal year, and when events or changes in circumstances indicate that the carrying value of a reporting unit exceeds its fair value. The Joint Venture has five reporting units. The Joint Venture’s management first assesses qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount (qualitative goodwill impairment assessment). If it is determined that the fair value is more likely than not to be lower than the carrying value, a quantitative goodwill impairment test is performed. Management uses judgment in assessing the qualitative factors in the qualitative goodwill impairment assessment for each reporting unit, including significant adverse changes to future gold prices, operating and capital costs, production levels and mineral reserves and mineral resources. Management uses future production levels and mineral reserves and mineral resources based on information compiled by qualified persons (management’s specialists).

The principal considerations for our determination that performing procedures relating to the qualitative goodwill impairment assessment is a critical audit matter are the judgment by management in assessing the qualitative factors in the qualitative goodwill impairment assessment for each reporting unit to determine whether further quantitative impairment testing is required; and a high degree of auditor judgment, subjectivity and effort in performing procedures related to management’s assessment of qualitative factors in the qualitative goodwill impairment assessment for each reporting unit with respect to significant adverse changes to future gold prices, operating and capital costs, production levels and mineral reserves and mineral resources.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to management’s qualitative goodwill impairment assessment. These procedures also included, among others, evaluating the reasonableness of management’s qualitative goodwill impairment assessment for each reporting unit with respect to significant adverse changes to future gold prices and operating and capital costs by (i) comparing gold prices to external industry data; (ii) comparing operating and capital costs to recent actual operating and capital costs incurred; and (iii) considering consistency with evidence obtained in other areas of the audit. The work of management’s specialists was used in performing the procedures to evaluate the reasonableness of future production levels and mineral reserves and mineral resources. As a basis for using this work, the management’s specialists’ qualifications were understood and the Joint Venture’s relationship with management’s specialists was assessed. The procedures performed also included evaluation of the methods and assumptions used by management’s specialists, tests of the data used by management’s specialists, and an evaluation of management’s specialists’ findings.

/s/PricewaterhouseCoopers LLP

Chartered Professional Accountants, Licensed Public Accountants

Toronto, Canada
February 24, 2022

We have served as the Joint Venture’s auditor since 2019.
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NEWMONT CORPORATION
CONSOLIDATED STATEMENTS OF OPERATIONS
Year Ended December 31,
202120202019
(in millions, except per share)
Sales (Note 5)
$12,222 $11,497 $9,740 
Costs and expenses:
Costs applicable to sales (1)
5,435 5,014 5,195 
Depreciation and amortization2,323 2,300 1,960 
Reclamation and remediation (Note 6)
1,846 366 280 
Exploration209 187 265 
Advanced projects, research and development154 122 150 
General and administrative259 269 313 
Care and maintenance (Note 7)
178 — 
Loss on assets held for sale (Note 8)
571 — — 
Other expense, net (Note 9)
160 255 300 
10,965 8,691 8,463 
Other income (expense):
Gain on formation of Nevada Gold Mines (Note 1)
— — 2,390 
Gain on asset and investment sales, net (Note 10)
212 677 30 
Other income (loss), net (Note 11)
(87)(32)297 
Interest expense, net of capitalized interest of $38, $24 and $26, respectively
(274)(308)(301)
(149)337 2,416 
Income (loss) before income and mining tax and other items1,108 3,143 3,693 
Income and mining tax benefit (expense) (Note 12)
(1,098)(704)(832)
Equity income (loss) of affiliates (Note 16)
166 189 95 
Net income (loss) from continuing operations176 2,628 2,956 
Net income (loss) from discontinued operations (Note 1)
57 163 (72)
Net income (loss)233 2,791 2,884 
Net loss (income) attributable to noncontrolling interests (Note 1)
933 38 (79)
Net income (loss) attributable to Newmont stockholders$1,166 $2,829 $2,805 
Net income (loss) attributable to Newmont stockholders:
Continuing operations$1,109 $2,666 $2,877 
Discontinued operations57 163 (72)
$1,166 $2,829 $2,805 
Weighted average common shares:
Basic799 804 735 
Effect of employee stock-based awards
Diluted801 806 737 
Net income (loss) per common share:
Basic:
Continuing operations$1.39 $3.32 $3.92 
Discontinued operations0.07 0.20 (0.10)
$1.46 $3.52 $3.82 
Diluted:
Continuing operations$1.39 $3.31 $3.91 
Discontinued operations0.07 0.20 (0.10)
$1.46 $3.51 $3.81 
____________________________
(1)Excludes Depreciation and amortization and Reclamation and remediation.

The accompanying notes are an integral part of these Consolidated Financial Statements.
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NEWMONT CORPORATION
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)
Year Ended December 31,
202120202019
(in millions)
Net income (loss)$233 $2,791 $2,884 
Other comprehensive income (loss):
Change in marketable securities, net of tax of $—, $— and $—, respectively
(5)
Foreign currency translation adjustments (2)
Change in pension and other post-retirement benefits, net of tax of $(13), $(11) and $—, respectively
71 44 (19)
Change in fair value of cash flow hedge instruments, net of tax of $(5), $(3) and $(2), respectively
12 32 
Other comprehensive income (loss)83 49 19 
Comprehensive income (loss)$316 $2,840 $2,903 
Comprehensive income (loss) attributable to:
Newmont stockholders $1,249 $2,878 $2,824 
Noncontrolling interests(933)(38)79 
$316 $2,840 $2,903 
The accompanying notes are an integral part of these Consolidated Financial Statements.
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NEWMONT CORPORATION
CONSOLIDATED STATEMENTS OF CASH FLOWS
Year Ended December 31,
202120202019
(in millions)
Operating activities:
Net income (loss)$233 $2,791 $2,884 
Adjustments:
Depreciation and amortization2,323 2,300 1,960 
Loss on assets held for sale (Note 8)
571 — — 
Gain on formation of Nevada Gold Mines (Note 1)
— — (2,390)
Gain on asset and investment sales, net (Note 10)
(212)(677)(30)
Net loss (income) from discontinued operations (Note 1)
(57)(163)72 
Reclamation and remediation1,827 353 258 
Change in fair value of investments (Note 11)
135 (252)(166)
Stock-based compensation (Note 14)
72 72 97 
Deferred income taxes (Note 12)
(109)(222)334 
Other non-cash adjustments24 393 166 
Net change in operating assets and liabilities (Note 25)
(541)295 (309)
Net cash provided by (used in) operating activities of continuing operations4,266 4,890 2,876 
Net cash provided by (used in) operating activities of discontinued operations (Note 1)
13 (8)(10)
Net cash provided by (used in) operating activities4,279 4,882 2,866 
Investing activities:
Additions to property, plant and mine development(1,653)(1,302)(1,463)
Acquisitions, net (1)
(328)— 127 
Proceeds from sales of investments194 307 67 
Contributions to equity method investees(150)(60)(28)
Purchases of investments(59)(37)(112)
Return of investment from equity method investees18 58 132 
Proceeds from sales of mining operations and other assets, net84 1,156 30 
Other 26 44 21 
Net cash provided by (used in) investing activities of continuing operations(1,868)166 (1,226)
Net cash provided by (used in) investing activities of discontinued operations (Note 1)
— (75)— 
Net cash provided by (used in) investing activities(1,868)91 (1,226)
Financing activities:
Dividends paid to common stockholders(1,757)(834)(889)
Repayment of debt (1,382)(1,160)(1,876)
Proceeds from issuance of debt, net992 985 690 
Repurchases of common stock (Note 2)
(525)(521)(479)
Distributions to noncontrolling interests(200)(197)(186)
Funding from noncontrolling interests100 112 93 
Payments on lease and other financing obligations(73)(66)(55)
Payments for withholding of employee taxes related to stock-based compensation(32)(48)(50)
Other(81)49 (25)
Net cash provided by (used in) financing activities(2,958)(1,680)(2,777)
Effect of exchange rate changes on cash, cash equivalents and restricted cash(8)(3)
Net change in cash, cash equivalents and restricted cash(555)3,299 (1,140)
Cash, cash equivalents and restricted cash at beginning of period 5,648 2,349 3,489 
Cash, cash equivalents and restricted cash at end of period $5,093 $5,648 $2,349 

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NEWMONT CORPORATION
CONSOLIDATED STATEMENTS OF CASH FLOWS
Year Ended December 31,
202120202019
(in millions)
Reconciliation of cash, cash equivalents and restricted cash:
Cash and cash equivalents$4,992 $5,540 $2,243 
Restricted cash included in Other current assets
Restricted cash included in Other non-current assets99 106 104 
Total cash, cash equivalents and restricted cash$5,093 $5,648 $2,349 
Supplemental cash flow information:
Income and mining taxes paid, net of refunds$1,534 $400 $437 
Interest paid, net of amounts capitalized$229 $261 $273 
____________________________
(1)Acquisitions, net for the year ended December 31, 2021 is primarily related to the asset acquisition of the remaining 85.1% of GT Gold Corporation (“GT Gold”). Refer to Note 1 for additional information. For the year ended December 31, 2019, Acquisitions, net is comprised of $117 cash and cash equivalents acquired, $21 restricted cash acquired, net of $17 cash paid in the Newmont Goldcorp transaction and $6 of restricted cash acquired in the formation of Nevada Gold Mines.
The accompanying notes are an integral part of these Consolidated Financial Statements.
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NEWMONT CORPORATION
CONSOLIDATED BALANCE SHEETS
At December 31, 2021At December 31, 2020
(in millions, except per share)
ASSETS
Cash and cash equivalents$4,992 $5,540 
Trade receivables (Note 5)
337 449 
Investments (Note 16)
82 290 
Inventories (Note 17)
930 963 
Stockpiles and ore on leach pads (Note 18)
857 827 
Other current assets498 436 
Current assets7,696 8,505 
Property, plant and mine development, net (Note 19)
24,124 24,281 
Investments (Note 16)
3,243 3,197 
Stockpiles and ore on leach pads (Note 18)
1,775 1,705 
Deferred income tax assets (Note 12)
269 337 
Goodwill (Note 20)
2,771 2,771 
Other non-current assets686 573 
Total assets$40,564 $41,369 
LIABILITIES
Accounts payable$518 $493 
Employee-related benefits (Note 13)
386 380 
Income and mining taxes384 657 
Current lease and other financing obligations (Note 22)
106 106 
Debt (Note 21)
87 551 
Other current liabilities (Note 23)
1,173 1,182 
Current liabilities2,654 3,369 
Debt (Note 21)
5,565 5,480 
Lease and other financing obligations (Note 22)
544 565 
Reclamation and remediation liabilities (Note 6)
5,839 3,818 
Deferred income tax liabilities (Note 12)
2,144 2,073 
Employee-related benefits (Note 13)
439 493 
Silver streaming agreement (Note 5)
910 993 
Other non-current liabilities (Note 23)
608 699 
Total liabilities18,703 17,490 
Contingently redeemable noncontrolling interest48 34 
Commitments and contingencies (Note 26)
EQUITY
Common stock - $1.60 par value;
1,276 1,287 
Authorized - 1,280 million and 1,280 million shares, respectively
Outstanding shares - 792 million and 800 million shares, respectively
Treasury stock - 5 million and 4 million shares, respectively
(200)(168)
Additional paid-in capital17,981 18,103 
Accumulated other comprehensive income (loss) (Note 24)
(133)(216)
Retained earnings3,098 4,002 
Newmont stockholders' equity22,022 23,008 
Noncontrolling interests(209)837 
Total equity21,813 23,845 
Total liabilities and equity$40,564 $41,369 

The accompanying notes are an integral part of these Consolidated Financial Statements.

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NEWMONT CORPORATION
CONSOLIDATED STATEMENT OF CHANGES IN EQUITY
(in millions, except per share)
Common StockTreasury StockAdditional
Paid-In
Capital
Accumulated
Other
Comprehensive
Income (Loss)
Retained
Earnings
Noncontrolling
Interests
Total
Equity
Contingently
Redeemable
Noncontrolling
Interest (6)
SharesAmountSharesAmount
Balance at December 31, 2018535 $855 (2)$(70)$9,618 $(284)$383 $963 $11,465 $47 
Cumulative-effect adjustment of adopting ASU No. 2016-02— — — — — — (9)— (9)— 
Net income (loss)— — — — — — 2,805 79 2,884 — 
Other comprehensive income (loss)— — — — — 19 — — 19 — 
Shares issued and other non-cash consideration for Goldcorp acquisition (2)
285 457 — — 8,972 — — — 9,429 — 
Dividends declared (1)
— — — — (205)— (690)— (895)— 
Distributions declared to noncontrolling interests (3)
— — — — — — — (187)(187)— 
Cash calls requested from noncontrolling interests (4)
— — — — — — — 95 95 — 
Repurchase and retirement of common stock(12)(19)— — (265)— (195)— (479)— 
Cancellation of shares due to the expiration of certain exchange rights— — — — — (3)— — 
Withholding of employee taxes related to stock-based compensation— — (1)(50)— — — — (50)— 
Stock-based awards and related share issuances— — 92 — — — 97 — 
Balance at December 31, 2019811 $1,298 (3)$(120)$18,216 $(265)$2,291 $950 $22,370 $47 
Cumulative-effect adjustment of adopting ASU No. 2016-13— — — — — — (5)— (5)— 
Net income (loss)— — — — — — 2,829 (25)2,804 (13)
Other comprehensive income (loss)— — — — — 49 — — 49 — 
Dividends declared (1)
— — — — — — (839)— (839)— 
Distributions declared to noncontrolling interests (3)
— — — — — — — (198)(198)— 
Cash calls requested from noncontrolling interests (4)
— — — — — — — 110 110 — 
Repurchase and retirement of common stock(10)(17)— — (230)— (274)— (521)— 
Withholding of employee taxes related to stock-based compensation— — (1)(48)— — — — (48)— 
Stock options exercised— — 49 — — — 51 — 
Stock-based awards and related share issuances— — 68 — — — 72 — 
Balance at December 31, 2020804 $1,287 (4)$(168)$18,103 $(216)$4,002 $837 $23,845 $34 
Net income (loss)— — — — — — 1,166 (947)219 14 
Other comprehensive income (loss)— — — — — 83 — — 83 — 
Dividends declared (1)
— — — — — — (1,764)— (1,764)— 
Distributions declared to noncontrolling interests (3)
— — — — — — — (200)(200)— 
Cash calls requested from noncontrolling interests (4)
— — — — — — — 101 101 — 
Repurchase and retirement of common stock (5)
(9)(15)— — (207)— (306)— (528)— 
Withholding of employee taxes related to stock-based compensation— — (1)(32)— — — — (32)— 
Stock options exercised— — — — 17 — — — 17 — 
Stock-based awards and related share issuances— — 68 — — — 72 — 
Balance at December 31, 2021797 $1,276 (5)$(200)$17,981 $(133)$3,098 $(209)$21,813 $48 
____________________________
(1)Cash dividends declared per common share was $2.20, $1.04, and $0.56 for 2021, 2020 and 2019, respectively. Special dividends declared per common share was $—, $—, and $0.88 for 2021, 2020 and 2019, respectively. Dividends declared and dividends paid to common stockholders differ by $7, $5, and $6 for 2021, 2020 and 2019, respectively, due to timing.
(2)The shares issued and other non-cash consideration for the Goldcorp acquisition includes the fair value of equity classified stock-based compensation awards allocated to purchase consideration of $6.
(3)Distributions declared to noncontrolling interests of $200, $198, and $187 for 2021, 2020 and 2019, respectively, represent cash calls declared by Newmont to Staatsolie for the Merian mine. Newmont paid $200, $197, and $186 for distributions during 2021, 2020 and 2019, respectively. Any differences are due to timing of payments.
(4)Cash calls requested from noncontrolling interests of $101, $110, and $95 for 2021, 2020 and 2019, respectively, represent cash calls requested from Staatsolie for the Merian mine. Staatsolie paid $100, $112, and $93 for cash calls during 2021, 2020 and 2019, respectively. Any differences are due to timing of receipts.
(5)Repurchase and retirement of common stock of $528 for 2021 includes $3 of non-cash common stock forfeitures.
(6)Summit Global Management II VB, a subsidiary of Sumitomo Corporation (“Sumitomo”) holds a 5% interest in Yanacocha and has the option to require Yanacocha to repurchase their interest for $48 if certain conditions are not met. Sumitomo is entitled to participate in earnings of Yanacocha and, as a result of the option, is not required to fund losses that reduce Sumitomo's investment below $48.

The accompanying notes are an integral part of these Consolidated Financial Statements.
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NOTE 1     THE COMPANY
Newmont Corporation and its affiliates and subsidiaries (collectively, “Newmont,” “we,” “us” or the “Company”) predominantly operate in the mining industry, focused on the production of and exploration for gold properties, some of which may contain copper, silver, zinc, lead or other metals. The Company has significant operations and/or assets in the United States (“U.S.”), Canada, Mexico, Dominican Republic, Peru, Suriname, Argentina, Chile, Australia and Ghana. The cash flow and profitability of the Company’s operations are significantly affected by the market price of gold, copper, silver, lead and zinc. The prices of gold, copper, silver, lead and zinc are affected by numerous factors beyond the Company’s control.
References to “C$” refer to Canadian currency.
Goldcorp

On April 18, 2019, Newmont completed the business acquisition of Goldcorp, Inc. (“Goldcorp”), an Ontario corporation. The Company acquired all outstanding common shares of Goldcorp in a primarily stock transaction (the “Newmont Goldcorp transaction”) for total cash and non-cash consideration of $9,456. Refer to Note 3 for further information.
Nevada Gold Mines
On July 1, 2019, ("the effective date") Newmont and Barrick consummated the Nevada JV Agreement and established Nevada Gold Mines LLC ("NGM"), which combined the Company’s Nevada mining operations with Barrick’s Nevada mining operations.
As of the effective date, the Company contributed its existing Nevada mining operations, which included Carlin, Phoenix, Twin Creeks and Long Canyon, to NGM in exchange for a 38.5% interest in NGM. The interest received in NGM was accounted for at fair value, and accordingly, the Company recognized a gain of $2,390 during 2019 as Gain on formation of Nevada Gold Mines. The gain represents the difference between the fair value of the Company’s interest in NGM and the carrying value of the Nevada mining operations contributed to NGM. The Company accounts for its interest in NGM using the proportionate consolidation method, which is an exception available to entities in the extractive industries, thereby recognizing its pro-rata share of the assets, liabilities and operations of NGM.
On October 14, 2021, NGM and i-80 Gold Corp completed an exchange transaction pursuant to which NGM acquired the remaining 40% interest in the South Arturo property, obtained an option to acquire the adjacent Rodeo Creek exploration property, received contingent consideration of up to $50 on meeting specific production targets, and obtained the release of NGM bonds in exchange for i-80 bonding, in exchange for the Lone Tree and Buffalo mountain properties and related infrastructure. As a result of the exchange, the Lone Tree property was remeasured to fair value resulting in the recognition of a gain of $79 by the Company which represents its 38.5% interest in NGM, included in Gain on asset and investment sales, net.
GT Gold
At December 31, 2020, marketable and other equity securities included the 14.9% of equity interest held in GT Gold Corporation (“GT Gold”). In May 2021, the Company completed the acquisition of the remaining 85.1% of GT Gold for cash consideration, including related transaction costs, of $326. The asset acquisition resulted in total consideration of $378, including non-cash consideration of $52. The non-cash consideration represents the fair value of the 14.9% GT Gold investment held by the Company on the acquisition date. The total consideration paid was allocated to the acquired assets and assumed liabilities based on their estimated fair values on the acquisition date, which primarily consisted of mineral interests of $590 and a related deferred tax liability of $211.
Noncontrolling Interests
Newmont has a 75.0% economic interest in Suriname Gold project C.V. (“Merian”), with the remaining interests held by Staatsolie Maatschappij Suriname N.V. (“Staatsolie”), a company wholly owned by the Republic of Suriname. Newmont consolidates Merian, through its wholly-owned subsidiary, Newmont Suriname LLC., in its Consolidated Financial Statements as the primary beneficiary of Merian, which is a variable interest entity. For the years ended 2021, 2020 and 2019, the Company recognized $(81), $(90) and $(78) of Net loss (income) attributable to noncontrolling interests related to Merian.
At December 31, 2021, Newmont had a 51.35% ownership interest in Minera Yanacocha S.R.L. ("Yanacocha"), with 43.65% owned by Compañia de Minas Buenaventura S.A.A. (“Buenaventura”) and 5% owned by Summit Global Management II VB, a subsidiary of Sumitomo Corporation (“Sumitomo”). Under the terms of Sumitomo's acquisition of its 5% interest in 2018 for $48 in cash, Sumitomo has the option to require Yanacocha to repurchase the interest for $48 if the Yanacocha Sulfides project does not adequately progress by June 2022 or if the project is approved with an internal rate of return below a contractually agreed upon rate. Sumitomo’s interest has been classified outside of permanent equity as Contingently redeemable noncontrolling interest on the Consolidated Balance Sheets. Under the terms of the sales agreement, the cash paid by Sumitomo at closing has been placed in escrow for repayment in the event the option is exercised. The Company continues to consolidate Yanacocha in its Consolidated Financial Statements under the voting interest model. For the years ended 2021, 2020 and 2019, the Company recognized $1,014, $128 and $(1) of Net loss (income) attributable to noncontrolling interests related to Yanacocha.
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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Yanacocha Transaction
In February 2022, the Company completed the acquisition of Buenaventura’s 43.65% noncontrolling interest in Yanacocha (the “Yanacocha Transaction”) for $300 cash consideration, certain royalties on any production from other future potential projects, and contingent payments of up to $100 tied to the outstanding Yanacocha tax dispute (see Note 26), higher metal prices and achieving commercial production at the Yanacocha Sulfides project. The Company expects to account for the Yanacocha Transaction as an equity transaction in the first quarter of 2022, resulting in no gain or loss recognition in the Consolidated Statement of Operations. Upon close of the Yanacocha Transaction, the Company’s ownership interest in Yanacocha increased to 95%.
Concurrent with the Yanacocha Transaction, the Company sold its 46.94% ownership interest in Minera La Zanja S.R.L. ("La Zanja"), accounted for as an equity method investment, in exchange for royalties on potential future production from the La Zanja operation. The Company also contributed $45 cash to Buenaventura, the parent company of La Zanja, to be used exclusively for reclamation costs at the La Zanja operation. The Company expects to recognize a $45 loss on sale of its equity interest in La Zanja in the first quarter of 2022. The carrying value of the La Zanja equity investment at December 31, 2021 is $—.
Discontinued Operations
Net income (loss) from discontinued operations includes results related to the Batu Hijau contingent consideration provisions associated with the sale of PT Newmont Nusa Tenggara in 2016 and a retained royalty obligation (“Holt royalty obligation”) to Royal Gold, Inc. for production on the Holt-McDermott property owned by Kirkland Lake Gold Ltd ("Kirkland"). In 2020, the Company and Kirkland signed a Strategic Alliance Agreement (the “Kirkland Agreement”), in which the Company purchased an option (the “Holt option”) from Kirkland for the mining and mineral rights subject to the Holt royalty obligation for $75, effectively reducing the Holt royalty obligation to $—. If exercised, the Holt option will allow the Company to prevent Kirkland from mining minerals subject to the Holt royalty obligation.
For the years ended 2021, 2020 and 2019, the Company recorded income (expense) of $57, $163 and $(72), net of a tax benefit (expense) of $(10), $(44) and $19, respectively, within discontinued operations. The Company received (paid) $13, $(8) and $(10) for the years ended 2021, 2020 and 2019, respectively, related to discontinued operations. See contingent consideration assets in Note 15 for additional information.
NOTE 2     SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Risks and Uncertainties
As a global mining company, the Company’s revenue, profitability and future rate of growth are substantially dependent on prevailing metal prices, primarily for gold, but also for copper, silver, lead and zinc. Historically, the commodity markets have been very volatile, and there can be no assurance that commodity prices will not be subject to wide fluctuations in the future. A substantial or extended decline in commodity prices could have a material adverse effect on the Company’s financial position, results of operations, cash flows, access to capital and on the quantities of reserves that the Company can economically produce. The carrying value of the Company’s Property, plant and mine development, net; Inventories; Stockpiles and ore on leach pads; Investments; Deferred income tax assets; and Goodwill are particularly sensitive to the outlook for commodity prices. A decline in the Company’s price outlook from current levels could result in material impairment charges related to these assets.
In addition to changes in commodity prices, other factors such as changes in mine plans, increases in costs, geotechnical failures, changes in social, environmental or regulatory requirements, impacts of global events such as the COVID-19 pandemic and management’s decision to reprioritize or abandon a development project can adversely affect the Company’s ability to recover its investment in certain assets and result in impairment charges.
The continued impact of the COVID-19 pandemic could include sites being placed into care and maintenance, significant COVID-19 specific costs, volatility in the prices for gold and other metals, logistical challenges shipping products, delays in product refining and smelting due to restrictions or temporary closures, additional travel restrictions, other supply chain disruptions and workforce interruptions, including loss of life. Depending on the duration and extent of the impact of COVID-19, this could materially impact the Company’s results of operations, cash flows and financial condition and could result in material impairment charges to the Company’s Property, plant and mine development, net; Inventories; Stockpiles and ore on leach pads; Investments; Deferred income tax assets; and Goodwill.
The Cerro Negro mine, located in Argentina, is a U.S. dollar functional currency entity. Argentina’s central bank has enacted a number of foreign currency controls in an effort to stabilize the local currency, including requiring the Company to convert U.S. dollar proceeds from metal sales to local currency and restricting payments to foreign-related entities denominated in foreign currency, such as dividends or distributions to the parent and related companies. We continue to monitor the foreign currency exposure risk and the limitations of repatriating cash to the United States. Currently, these currency controls are not expected to impact the Company's ability to repay its debt obligations or declare dividends.
Minera Yanacocha S.R.L. (“Yanacocha”) includes the mining operations at Yanacocha and the Conga project in Peru. Based on the Company's internal project portfolio evaluation process, we have reprioritized the Yanacocha Sulfides project ahead of Conga, and
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
therefore we do not anticipate developing Conga in the next ten years. Due to the uncertainty surrounding the project’s development timeline, we have allocated exploration and development capital to other projects in the Company's portfolio. As a result, the Conga project is currently in care and maintenance. Should we be unable to develop the Conga project or conclude that future development is not in the best interest of the business, we may consider other alternatives for the project, which may result in a future impairment charge for the remaining assets. The total assets at Conga as of December 31, 2021 and 2020 were $900 and $1,517 respectively.
Use of Estimates
The Company’s Consolidated Financial Statements have been prepared in accordance with U.S. generally accepted accounting principles (“GAAP”). The preparation of the Company’s Consolidated Financial Statements requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and the related disclosure of contingent assets and liabilities at the date of the Consolidated Financial Statements and the reported amounts of revenues and expenses during the reporting period. The Company must make these estimates and assumptions because certain information used is dependent on future events, cannot be calculated with a high degree of precision from data available or simply cannot be readily calculated based on generally accepted methodologies. Actual results could differ from these estimates.
The more significant areas requiring the use of management estimates and assumptions relate to mineral reserves that are the basis for future cash flow estimates utilized in impairment calculations and units-of-production amortization calculations; environmental remediation, reclamation and closure obligations; estimates of recoverable gold and other minerals in stockpile and leach pad inventories; estimates of fair value for certain reporting units and asset impairments (including impairments of long-lived assets, goodwill and investments); write-downs of inventory, stockpiles and ore on leach pads to net realizable value; post-employment, post-retirement and other employee benefit liabilities; valuation allowances for deferred tax assets; provisional amounts related to income tax effects of newly enacted tax laws; provisional amounts related to uncertain tax positions; valuation of assets acquired and liabilities assumed in a business combination; reserves for contingencies and litigation; and the fair value and accounting treatment of financial instruments including marketable and other equity securities and derivative instruments. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. Accordingly, actual results will differ from those amounts estimated in these financial statements.
Principles of Consolidation
The Consolidated Financial Statements include the accounts of Newmont Corporation, more-than-50%-owned subsidiaries that it controls and variable interest entities where it is the primary beneficiary. The proportionate consolidation method is used for investments in which the Company has an undivided interest in the assets, liabilities and operations and for certain unincorporated joint ventures in the extractive industry. All significant intercompany balances and transactions have been eliminated. Equity method accounting is applied for certain entities where the Company does not have control, but does have significant influence over the activities that most significantly impact the entities’ operations and financial performance. The functional currency for the majority of the Company’s operations is the U.S. dollar.
The Company follows the Accounting Standards Codification (“ASC”) guidance for identification and reporting of entities over which control is achieved through means other than voting rights. The guidance defines such entities as Variable Interest Entities (“VIEs”).
Business Combinations
The Company recognizes and measures the assets acquired and liabilities assumed in a business combination based on their estimated fair values at the acquisition date, while transaction and integration costs related to business combinations are expensed as incurred. Any excess of the purchase consideration when compared to the fair value of the net tangible and intangible assets acquired, if any, is recorded as goodwill. For material acquisitions, the Company engages independent appraisers to assist with the determination of the fair value of assets acquired, liabilities assumed, noncontrolling interest, if any, and goodwill, based on recognized business valuation methodologies. An income, market or cost valuation method may be utilized to estimate the fair value of the assets acquired, liabilities assumed, and noncontrolling interest, if any, in a business combination. The income valuation method represents the present value of future cash flows over the life of the asset using: (i) discrete financial forecasts, which rely on management’s estimates of reserve quantities and exploration potential, costs to produce and develop reserves, revenues, and operating expenses; (ii) long-term growth rates; (iii) appropriate discount rates; and (iv) expected future capital requirements (“income valuation method”). The market valuation method uses prices paid for a similar asset by other purchasers in the market, normalized for any differences between the assets (“market valuation method”). The cost valuation method is based on the replacement cost of a comparable asset at the time of the acquisition adjusted for depreciation and economic and functional obsolescence of the asset (“cost valuation method”). The fair value of property, plant and mine development is estimated to include the fair value of asset retirement costs of related long-lived tangible assets. If the initial accounting for the business combination is incomplete by the end of the reporting period in which the acquisition occurs, an estimate will be recorded. Subsequent to the acquisition date, and not later than one year from the acquisition date, the Company will record any material adjustments to the initial estimate based on new information obtained that would have existed as of the date of the acquisition. Any adjustment that arises from information obtained that did not exist as of the date of the acquisition will be recorded in the period the adjustments arises.
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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Cash, Cash Equivalents and Restricted Cash
Cash and cash equivalents consist of all cash balances and highly liquid investments with an original maturity of three months or less. Because of the short maturity of these investments, the carrying amounts approximate their fair value. Cash and cash equivalents are held in overnight bank deposits or are invested in United States Treasury securities and money market securities. Restricted cash is excluded from cash and cash equivalents and is included in other current or non-current assets. Restricted cash is held primarily for the purpose of settling asset retirement obligations.
Stockpiles, Ore on Leach Pads and Inventories
As described below, costs that are incurred in or benefit the productive process are accumulated as stockpiles, ore on leach pads and inventories. Stockpiles, ore on leach pads and inventories are carried at the lower of average cost or net realizable value. Net realizable value represents the estimated future sales price of the product based on current and long-term metals prices, less the estimated costs to complete production and bring the product to sale. Write-downs of stockpiles, ore on leach pads and inventories to net realizable value are reported as a component of Costs applicable to sales and Depreciation and amortization. The current portion of stockpiles, ore on leach pads and inventories is determined based on the expected amounts to be processed within the next 12 months and utilize the short-term metal price assumption in estimating net realizable value. Stockpiles, ore on leach pads and inventories not expected to be processed within the next 12 months are classified as non-current and utilize the long-term metal price assumption in estimating net realizable value. The major classifications are as follows:
Stockpiles
Stockpiles represent ore that has been extracted from the mine and is available for further processing. Mine sequencing may result in mining material at a faster rate than can be processed. The Company generally processes the highest ore grade material first to maximize metal production; however, a blend of metal stockpiles may be processed to balance hardness and/or metallurgy in order to maximize throughput and recovery. Processing of lower grade stockpiled ore may continue after mining operations are completed. Sulfide copper ores are subject to oxidation over time which can reduce expected future recoveries. Stockpiles are measured by estimating the number of tons added and removed from the stockpile, the number of contained ounces or pounds (based on assay data) and the estimated metallurgical recovery rates (based on the expected processing method). Stockpile ore tonnages are verified by periodic surveys. Costs are added to stockpiles based on current mining costs incurred including applicable overhead and depreciation and amortization relating to mining operations and removed at each stockpile’s average cost per recoverable unit as material is processed. Stockpiles are recorded at the lower of average cost or net realizable value, and carrying values are evaluated at least quarterly. Net realizable value represents the estimated future sales price based on short-term and long-term metals price assumptions, less estimated costs to complete production and bring the product to sale.
Ore on Leach Pads
Ore on leach pads represent ore that has been mined and placed on leach pads where a solution is applied to the surface of the heap to dissolve the gold or silver or extract the copper.
Costs are added to ore on leach pads based on current mining costs, including applicable depreciation and amortization relating to mining operations. Costs are removed from ore on leach pads as ounces or pounds are recovered based on the average cost per estimated recoverable ounce of gold or silver or pound of copper on the leach pad.
Estimates of recoverable ore on the leach pads are calculated from the quantities of ore placed on the leach pads (measured tons added to the leach pads), the grade of ore placed on the leach pads (based on assay data) and a recovery percentage (based on ore type). In general, leach pads recover between 50% and 95% of the recoverable ounces in the first year of leaching, declining each year thereafter until the leaching process is complete.
Although the quantities of recoverable metal placed on the leach pads are reconciled by comparing the grades of ore placed on pads to the quantities of metal actually recovered (metallurgical balancing), the nature of the leaching process inherently limits the ability to precisely monitor inventory levels. As a result, the metallurgical balancing process is constantly monitored and estimates are refined based on actual results over time. Historically, the Company’s operating results have not been materially impacted by variations between the estimated and actual recoverable quantities of metal on its leach pads. Variations between actual and estimated quantities resulting from changes in assumptions and estimates that do not result in write-downs to net realizable value are accounted for on a prospective basis.
In-process Inventory
In-process inventories represent material that is currently in the process of being converted to a saleable product. Conversion processes vary depending on the nature of the ore and the specific processing facility, but include mill in-circuit, flotation, leach and carbon-in-leach. In-process material is measured based on assays of the material fed into the process and the projected recoveries of the respective processing plants. In-process inventories are valued at the lower of the average cost of the material fed into the process attributable to the source material coming from the mines, stockpiles and/or leach pads, plus the in-process conversion costs, including applicable amortization relating to the process facilities incurred to that point in the process or net realizable value.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Precious Metals Inventory
Precious metals inventories include gold doré and/or gold bullion. Precious metals that result from the Company’s mining and processing activities are valued at the lower of the average cost of the respective in-process inventories incurred prior to the refining process, plus applicable refining costs or net realizable value.
Concentrate Inventory
Concentrate inventories represent gold, silver, lead, zinc and copper concentrate available for shipment or in transit for further processing when the sales process has not been completed. The Company values concentrate inventory at average cost, including an allocable portion of support costs and amortization. Costs are added and removed to the concentrate inventory based on metal in the concentrate and are valued at the lower of average cost or net realizable value.
Materials and Supplies
Materials and supplies are valued at the lower of average cost or net realizable value. Cost includes applicable taxes and freight.
Property, Plant and Mine Development
Facilities and Equipment
Expenditures for new facilities or equipment and expenditures that extend the useful lives of existing facilities or equipment are capitalized and recorded at cost. Facilities and equipment acquired as a part of a finance lease, build-to-suit or other financing arrangement are capitalized and recorded based on the contractual lease terms. The facilities and equipment are depreciated using the straight-line method at rates sufficient to depreciate such capitalized costs over the estimated productive lives of such facilities. These estimated productive lives do not exceed the related estimated mine lives, which are based on proven and probable reserves.
Mine Development
Mine development costs include engineering and metallurgical studies, drilling and other related costs to delineate an ore body, the removal of overburden to initially expose an ore body at open pit surface mines and the building of access ways, shafts, lateral access, drifts, ramps and other infrastructure at underground mines. Costs incurred before mineralization is classified as proven and probable reserves are expensed and classified as Exploration or Advanced projects, research and development expense. Capitalization of mine development project costs that meet the definition of an asset begins once mineralization is classified as proven and probable reserves.
Drilling and related costs are capitalized for an ore body where proven and probable reserves exist and the activities are directed at obtaining additional information on the ore body or converting measured, indicated and inferred resources to proven and probable reserves. All other drilling and related costs are expensed as incurred. Drilling costs incurred during the production phase for operational ore control are allocated to inventory costs and then included as a component of Costs applicable to sales.
The cost of removing overburden and waste materials to access the ore body at an open pit mine prior to the production phase are referred to as “pre-stripping costs.” Pre-stripping costs are capitalized during the development of an open pit mine. Where multiple open pits exist at a mining complex utilizing common processing facilities, pre-stripping costs are capitalized at each pit. The removal, production, and sale of de minimis saleable materials may occur during the development phase of an open pit mine and are assigned incremental mining costs related to the removal of that material.
The production phase of an open pit mine commences when saleable minerals, beyond a de minimis amount, are produced. Stripping costs incurred during the production phase of a mine are variable production costs that are included as a component of inventory to be recognized in Costs applicable to sales in the same period as the revenue from the sale of inventory.
Mine development costs are amortized using the units-of-production method based on estimated recoverable ounces or pounds in proven and probable reserves. To the extent that these costs benefit an entire ore body, they are amortized over the estimated life of the ore body. Costs incurred to access specific ore blocks or areas that only provide benefit over the life of that area are amortized over the estimated life of that specific ore block or area.
Underground development costs are capitalized as incurred. Costs incurred before mineralization is classified as proven and probable reserves are expensed and classified as Exploration or Advanced projects, research and development expense. Capitalization of mine development project costs that meet the definition of an asset begins once mineralization is classified as proven and probable reserves.
Mineral Interests
Mineral interests include acquired interests in production, development and exploration stage properties. Mineral interests are capitalized at their fair value at the acquisition date, either as an individual asset purchase or as part of a business combination. Mineral
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
interests in the development and exploration stage are not amortized until the underlying property is converted to the production stage, at which point the mineral interests are amortized over the estimated recoverable proven and probable reserves.
The value of such assets is primarily driven by the nature and amount of mineral interests believed to be contained in such properties. Production stage mineral interests represent interests in operating properties that contain proven and probable reserves and are amortized using the units-of-production method based on the estimated recoverable ounces or pounds in proven and probable reserves. Development stage mineral interests represent interests in properties under development that contain proven and probable reserves. Exploration stage mineral interests represent interests in properties that are believed to potentially contain mineral resources consisting of (i) mineral resources within pits; mineral resources with insufficient drill spacing to qualify as proven and probable reserves; and mineral resources in close proximity to proven and probable reserves; (ii) around-mine exploration potential not immediately adjacent to existing reserves and mineralization, but located within the immediate mine area; (iii) other mine-related exploration potential that is not part of current resources and is comprised mainly of material outside of the immediate mine area; (iv) greenfield exploration potential that is not associated with any other production, development or exploration stage property, as described above; or (v) any acquired right to explore or extract a potential mineral deposit. The Company’s mineral rights generally are enforceable regardless of whether proven and probable reserves have been established. In certain limited situations, the nature of a mineral right changes from an exploration right to a mining right upon the establishment of proven and probable reserves. The Company has the ability and intent to renew mineral interests where the existing term is not sufficient to recover all identified and valued proven and probable reserves and/or undeveloped mineral resources.
Goodwill
Goodwill represents the excess of the purchase price over the estimated fair value of the net assets acquired in a business acquisition. Goodwill is allocated to reporting units and tested for impairment annually as of December 31 and when events or changes in circumstances indicate that the carrying value of a reporting unit exceeds its fair value. Each operating mine is considered a distinct reporting unit for purposes of goodwill impairment testing.
The Company may elect to perform a qualitative assessment when it is more likely than not that the fair value of a reporting unit is higher than its carrying value. If the Company determines that it is more likely than not that the fair value is less than the carrying value, a quantitative goodwill impairment test is performed to determine the fair value of the reporting unit. The fair value of a reporting unit is determined using either the income approach utilizing estimates of discounted future cash flows or the market approach utilizing recent transaction activity for comparable properties. These approaches are considered Level 3 fair value measurements. If the carrying amount of the reporting unit exceeds its fair value, an impairment loss is recognized in an amount equal to that excess, limited to the total amount of goodwill allocated to that reporting unit. The Company recognizes its pro rata share of goodwill and any subsequent goodwill impairment losses recorded by entities that are proportionately consolidated.
The estimated cash flows used to assess the fair value of a reporting unit are derived from the Company’s current business plans, which are developed using short-term price forecasts reflective of the current price environment and management’s projections for long-term average metal prices. In addition to short- and long-term metal price assumptions, other assumptions include estimates of commodity-based and other input costs; capital investment; proven and probable mineral reserve estimates, including the timing and cost to develop and produce the reserves; value beyond proven and probable mineral reserve and measured, indicated and inferred resource estimates; estimated future closure costs; and the use of appropriate discount rates.
Impairment of Long-lived Assets
The Company reviews and evaluates its long-lived assets for impairment when events or changes in circumstances indicate that the related carrying amounts may not be recoverable. An impairment loss is measured and recorded based on the estimated fair value of the long-lived assets being tested for impairment, and their carrying amounts. Fair value is typically determined through the use of an income approach utilizing estimates of discounted pre-tax future cash flows or a market approach utilizing recent transaction activity for comparable properties. These approaches are considered Level 3 fair value measurements. Occasionally, such as when an asset is held for sale, market prices are used.
The estimated undiscounted cash flows used to assess recoverability of long-lived assets and to measure the fair value of the Company’s mining operations are derived from current business plans, which are developed using short-term price forecasts reflective of the current price environment and management’s projections for long-term average metal prices. In addition to short- and long-term metal price assumptions, other assumptions include estimates of commodity-based and other input costs; proven and probable mineral reserve estimates, including the timing and cost to develop and produce the reserves; value beyond proven and probable mineral reserve and measured, indicated and inferred resource estimates; estimated future closure costs; and the use of appropriate discount rates.
In estimating undiscounted cash flows, assets are grouped at the lowest level for which there are identifiable cash flows that are largely independent of undiscounted cash flows from other asset groups. The Company’s estimates of undiscounted cash flows are based on numerous assumptions and it is possible that actual cash flows may differ significantly from estimates, as actual produced reserves, metal prices, commodity-based and other costs, and closure costs are each subject to significant risks and uncertainties.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Investments
Management classifies investments at the acquisition date and re-evaluates the classification at each balance sheet date and when events or changes in circumstances indicate that there is a change in the Company’s ability to exercise significant influence. The ability to exercise significant influence is typically presumed when the Company possesses 20% or more of the voting interests in the investee. The Company accounts for its investments in stock of other entities over which the Company has significant influence, but not control, using the equity method of accounting. Under the equity method of accounting, the Company increases its investment for contributions made and records its proportionate share of net earnings, declared dividends and partnership distributions based on the most recently available financial statements of the investee. To the extent that there is a basis difference between the amount invested and the underlying equity in the net assets of an equity investment, the Company allocates such differences between tangible and intangible assets. This basis difference is being amortized into Equity income (loss) of affiliates over the remaining estimated useful lives of the underlying tangible and intangible net assets. Equity method investments are included in Investments.
Contributions made to equity method investees at times are in the form of loan agreements. Loans provided to equity method investees that are made based on the Company's proportionate ownership percentage are accounted for as “in-substance capital contributions” and are treated as an increase to the investment. Principal and interest payments received on loans treated as in-substance capital contributions are assessed under the cumulative earnings approach to determine if the distribution received represents a return on capital or a return of capital. Return on capital distributions are recorded as an operating cash flow whereas return of capital distributions are recorded as an investing cash flow. Loans provided to equity method investees that are not made on a proportionate basis are accounted for as a loan receivable and do not increase the investment. Principal payments received on loans not treated as an in-substance capital contribution are accounted for as a reduction to the loan receivable and interest received is recorded as interest income.
The Company evaluates its equity method investments for potential impairment whenever events or changes in circumstances indicate that there is an other-than-temporary decline in the value of the investment. Declines in fair value that are deemed to be other-than-temporary are charged to Other income (loss), net.
Additionally, the Company has certain marketable equity and debt securities and other equity securities. Marketable equity securities are measured primarily at fair value with any changes in fair value recorded in Other income (loss), net. Certain other equity securities are accounted for under the measurement alternative (cost less impairment, adjusted for any qualifying observable price changes) when fair value is not readily determinable. The Company accounts for its restricted marketable debt securities as available-for-sale securities. Unrealized gains and losses on available-for-sale ("AFS") investments, net of taxes, are reported as a component of Accumulated other comprehensive income (loss) in Total equity, unless an impairment is deemed to be credit-related. Credit-related impairment is recognized as an allowance for credit losses on the balance sheet with a corresponding charge to Other income (loss), net.
Debt
The Company carries its Senior Notes at amortized cost.
Debt issuance costs and debt premiums and discounts, which are included in Debt, and unrealized gains or losses related to cash flow hedges using treasury rate lock contracts and forward starting swap contracts, which are included in Accumulated other comprehensive income (loss), are amortized using the effective interest method over the terms of the respective Senior Notes as a component of Interest expense, net within the Consolidated Statements of Operations.
When repurchasing its debt, the Company records the resulting gain or loss as well as the accelerated portion of related debt issuance costs, premiums and discounts, and any unrealized gains or losses from the associated treasury rate lock contracts and/or associated forward starting swap contracts, included in Accumulated other comprehensive income (loss), in Other income (loss), net.
Leases
The Company determines if a contractual arrangement represents or contains a lease at inception. Operating leases are included in Other non-current assets and Other current and non-current liabilities in the Consolidated Balance Sheets. Finance leases are included in Property, plant and mine development, net and current and non-current Lease and other financing obligations in the Consolidated Balance Sheets.
Operating and finance lease right-of-use ("ROU") assets and lease liabilities are recognized at the lease commencement date based on the present value of the future lease payments over the lease term. Leases acquired in a business combination are also measured based on the present value of the remaining leases payments, as if the acquired lease were a new lease at the acquisition date. When the rate implicit to the lease cannot be readily determined, the Company utilizes its incremental borrowing rate in determining the present value of the future lease payments. The incremental borrowing rate is derived from information available at the lease commencement date and represents the rate of interest that the Company would have to pay to borrow on a collateralized basis over a similar term and amount equal to the lease payments in a similar economic environment. The ROU asset includes any lease payments made and lease incentives received prior to the commencement date. Operating lease ROU assets also include any
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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
cumulative prepaid or accrued rent when the lease payments are uneven throughout the lease term. The ROU assets and lease liabilities may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise that option.
The Company has lease arrangements that include both lease and non-lease components. The Company accounts for each separate lease component and its associated non-lease components as a single lease component for the majority of its asset classes. Additionally, for certain lease arrangements that involve leases of similar assets, the Company applies a portfolio approach to effectively account for the underlying ROU assets and lease liabilities.
Contingently Redeemable Noncontrolling Interest
Certain noncontrolling interests in consolidated entities meet the definition of redeemable financial instruments if the ability to redeem the interest is outside of the control of the consolidating entity. In such cases, these financial instruments are classified outside of permanent equity (referred to as temporary equity).
Common Stock
In order to consummate the Newmont Goldcorp transaction, the Company amended its Restated Certificate of Incorporation to increase Newmont’s authorized number of shares of common stock from 750 million to 1.28 billion, as approved by Newmont shareholders at the April 11, 2019 special meeting of stockholders.
In July 2021, Newmont filed a shelf registration statement on Form S-3 under which it can issue an indeterminate number or amount of common stock, preferred stock, debt securities, guarantees of debt securities and warrants from time to time at indeterminate prices, subject to the limitations of the Delaware General Corporation Law, the Company's certification of incorporation and bylaws. It also includes the ability to resell an indeterminate amount of common stock, preferred stock and debt securities from time to time upon exercise of warrants or conversion of convertible securities.
Treasury Stock
The Company records repurchases of common shares as Treasury stock at cost and records any subsequent retirements of treasury shares at cost. When treasury shares are retired, the Company’s policy is to allocate the excess of the repurchase price over the par value of shares acquired to both Retained earnings and Additional paid-in capital using settlement-date accounting. The portion allocated to Additional paid-in capital is calculated on a pro rata basis of the shares to be retired and the total shares issued and outstanding as of the date of the retirement.
During the years ended December 31, 2021, 2020 and 2019, the Company repurchased and retired approximately 9 million, 10 million and 12 million shares of its common stock for $525, $521 and $479, respectively. During the years ended December 31, 2021, 2020 and 2019, the Company withheld 0.6 million, 1.0 million and 1.4 million shares, respectively, for payments of employee withholding taxes related to the vesting of stock awards.
Revenue Recognition
Newmont generates revenue by selling gold, silver, lead, zinc and copper produced from its mining operations. Refer to Note 4 for further information regarding the Company’s operating segments.
The majority of the Company’s Sales come from the sale of refined gold; however, the end product at the Company’s gold operations is generally doré bars. Doré is an alloy consisting primarily of gold but also containing silver and other metals. Doré is sent to refiners to produce bullion that meets the required market standard of 99.95% gold. Under the terms of the Company’s refining agreements, the doré bars are refined for a fee, and the Company’s share of the refined gold and the separately-recovered silver is credited to its bullion account. Gold from doré bars credited to its bullion account is typically sold to banks or refiners.
A portion of gold sold from certain sites is sold in the form of concentrate. The Company’s Sales also come from the sale of silver, lead, zinc and copper. Sales from these metals are generally in the form of concentrate, which is sold to smelters for further treatment and refining.
Generally, if a metal expected to be mined represents more than 10% to 20% of the life of mine sales value of all the metal expected to be mined, co-product accounting is applied. When the Company applies co-product accounting at an operation, revenue is recognized for each co-product metal sold, and shared costs applicable to sales are allocated based on the relative sales values of the co-product metals produced. Generally, if metal expected to be mined is less than the 10% to 20% of the life of mine sales value, by-product accounting is applied. Revenues from by-product sales, which are immaterial, are credited to Costs applicable to sales as a by-product credit. Silver, lead and zinc are produced as co-products at Peñasquito. Copper is produced as a co-product at Boddington and was produced as a co-product at Phoenix until the formation of NGM on July 1, 2019. Silver, lead, zinc and/or copper are produced as a by-product at all other Newmont sites.
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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Gold Sales from Doré Production
The Company recognizes revenue for gold from doré production when it satisfies the performance obligation of transferring gold inventory to the customer, which generally occurs upon transfer of gold bullion credits as this is the point at which the customer obtains control the ability to direct the use and obtains substantially all of the remaining benefits of ownership of the asset.
The Company generally recognizes the sale of gold bullion credits when the credits are delivered to the customer. The transaction price is determined based on the agreed upon market price and the number of ounces delivered. Payment is due upon delivery of gold bullion credits to the customer’s account.
Sales from Concentrate Production
The Company recognizes revenue for gold, silver, lead, zinc and copper from concentrate production, net of treatment and refining charges, when it satisfies the performance obligation of transferring control of the concentrate to the customer. This generally occurs as material passes over the vessel's rail at the port of loading based on the date from the bill of lading, as the customer has the ability to direct the use of and obtain substantially all of the remaining benefits from the material and the customer has the risk of loss. Newmont has elected to account for shipping and handling costs for concentrate contracts as fulfillment activities and not as promised goods or services; therefore these activities are not considered separate performance obligations.
The Company generally sells metal concentrate based on the monthly average market price for a future month, dependent on the relevant contract, following the month in which the delivery to the customer takes place. The amount of revenue recognized for concentrates is initially recorded on a provisional basis based on the forward prices for the estimated month of settlement and the Company’s estimated metal quantities based on assay data. The Company’s sales based on a provisional price contain an embedded derivative that is required to be separated from the host contract for accounting purposes. The host contract is the receivable from the sale of the concentrates at the forward price at the time of sale. The embedded derivative, which is not designated for hedge accounting, is primarily marked to market through Sales each period prior to final settlement. The Company also adjusts estimated metal quantities used in computing provisional sales using new information and assay data from the smelter as it is received (if any).
A provisional payment is generally due upon delivery of the concentrate to the customer. Final payment is due upon final settlement of price and quantity with the customer.
The principal risks associated with recognition of sales on a provisional basis include metal price fluctuations and updated quantities between the date the sale is recorded and the date of final settlement. If a significant decline in metal prices occurs, or assay data results in a significant change in quantity between the provisional pricing date and the final settlement date, it is reasonably possible that the Company could be required to return a portion of the provisional payment received on the sale. Refer to Note 5 for additional information.
Income and Mining Taxes
The Company accounts for income taxes using the liability method, recognizing certain temporary differences between the financial reporting basis of the Company’s liabilities and assets and the related income tax basis for such liabilities and assets. This method generates either a net deferred income tax liability or asset for the Company, as measured by the statutory tax rates in effect. The Company derives its deferred income tax charge or benefit by recording the change in either the net deferred income tax liability or asset balance for the year. The financial statement effects of changes in tax law are recorded as discrete items in the period enacted as part of income tax expense or benefit from continuing operations, regardless of the category of income or loss to which the deferred taxes relate. The Company determines if the assessment of a particular income tax effect is “complete.” Those effects for which the accounting is determined to be complete are reported in the enactment period financial statements. The Company has exposure to the impact of foreign exchange fluctuations on tax positions in certain jurisdictions, such movements are recorded within Income and mining tax benefit (expense) related to deferred income tax assets and liabilities, as well as non-current uncertain tax positions, while foreign exchange fluctuations impacting current tax positions are recorded within Other income (loss), net as foreign currency exchange gains (losses). With respect to the earnings that the Company derives from the operations of its consolidated subsidiaries, in those situations where the earnings are indefinitely reinvested, no deferred taxes have been provided on the unremitted earnings (including the excess of the carrying value of the net equity of such entities for financial reporting purposes over the tax basis of such equity) of these consolidated companies.
Mining taxes represent state and provincial taxes levied on mining operations and are classified as income taxes. As such, taxes are based on a percentage of mining profits.
Newmont’s operations are in multiple jurisdictions where uncertainties arise in the application of complex tax regulations. Some of these tax regimes are defined by contractual agreements with the local government, while others are defined by general tax laws and regulations. Newmont and its subsidiaries are subject to reviews of its income tax filings and other tax payments, and disputes can arise with the taxing authorities over the interpretation of its contracts or laws. The Company recognizes potential liabilities and records tax liabilities for anticipated tax audit issues in the U.S. and other tax jurisdictions based on its estimate of whether it is more likely than not, and the extent to which, additional taxes will be due. The Company adjusts these reserves in light of changing facts and circumstances; however, due to the complexity of some of these uncertainties, the ultimate resolution may result in
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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
a payment that is materially different from the Company’s current estimate of the tax liabilities. If the Company’s estimate of tax liabilities proves to be less than the ultimate assessment, an additional charge to expense would result. If the estimate of tax liabilities proves to be greater than the ultimate assessment, a tax benefit would result. The Company recognizes interest and penalties, if any, related to unrecognized tax benefits in Income and mining tax benefit (expense). In certain jurisdictions, Newmont must pay a portion of the disputed amount to the local government in order to formally appeal the assessment. Such payment is recorded as a receivable if Newmont believes the amount is collectible.
Valuation of Deferred Tax Assets
The Company’s deferred income tax assets include certain future tax benefits. The Company records a valuation allowance against any portion of those deferred income tax assets when it believes, based on the weight of available evidence, it is more likely than not that some portion or all of the deferred income tax asset will not be realized. The Company reviews the likelihood that it will realize the benefit of its deferred tax assets and therefore the need for valuation allowances on a quarterly basis, or more frequently if events indicate that a review is required. In determining the requirement for a valuation allowance, the historical and projected financial results of the legal entity or consolidated group recording the net deferred tax asset is considered, along with all other available positive and negative evidence.
Certain categories of evidence carry more weight in the analysis than others based upon the extent to which the evidence may be objectively verified. The Company looks to the nature and severity of cumulative pretax losses (if any) in the current three-year period ending on the evaluation date, recent pretax losses and/or expectations of future pretax losses. Other factors considered in the determination of the probability of the realization of the deferred tax assets include, but are not limited to:
Earnings history;
Projected future financial and taxable income based upon existing reserves and long-term estimates of commodity prices;
The duration of statutory carry forward periods;
Prudent and feasible tax planning strategies readily available that may alter the timing of reversal of the temporary difference;
Nature of temporary differences and predictability of reversal patterns of existing temporary differences; and
The sensitivity of future forecasted results to commodity prices and other factors.
Concluding that a valuation allowance is not required is difficult when there is significant negative evidence which is objective and verifiable, such as cumulative losses in recent years. The Company utilizes a rolling twelve quarters of pre-tax income or loss as a measure of its cumulative results in recent years. However, a cumulative three year loss is not solely determinative of the need for a valuation allowance. The Company also considers all other available positive and negative evidence in its analysis.
Reclamation and Remediation Costs
Reclamation obligations associated with operating and non-operating mine sites are recognized when an obligation is incurred and the fair value can be reasonably estimated. Fair value is measured as the present value of expected cash flow estimates, after considering inflation, our credit-adjusted risk-free rates and a market risk premium appropriate for our operations. The liability is accreted over time through periodic charges to earnings. In addition, the asset retirement cost is capitalized as part of the asset’s carrying value and amortized over the life of the related asset. Reclamation costs are periodically adjusted to reflect changes in the estimated present value resulting from the passage of time and revisions to the estimates of either the timing or amount of the reclamation costs. Changes in reclamation estimates at mines that are not currently operating, as the mine or portion of the mine site has entered the closure phase and has no substantive future economic value, are reflected in earnings in the period an estimate is revised. The estimated reclamation obligation is based on when spending for an existing disturbance is expected to occur. Costs included in estimated asset retirement obligations are discounted to their present value as cash flows are readily estimable over a period of up to fifty years. The Company reviews, on an annual basis, unless otherwise deemed necessary, the reclamation obligation at each mine site in accordance with ASC guidance for asset retirement obligations.
Remediation costs are accrued when it is probable that an obligation has been incurred and the cost can be reasonably estimated. Such cost estimates may include ongoing care, maintenance and monitoring costs. Changes in remediation estimates at non-operating mines are reflected in earnings in the period an estimate is revised. Water treatment costs included in environmental remediation obligations are discounted to their present value as cash flows are readily estimable over a period up to fifty years.
Foreign Currency
The functional currency for the majority of the Company’s operations is the U.S. dollar. Transaction gains and losses related to foreign currency denominated monetary assets and liabilities where the functional currency is the U.S. dollar are remeasured at current exchange rates and the resulting adjustments are included in Other income (loss), net. The financial statements of our foreign entities with functional currencies other than the U.S. dollar are translated into U.S. dollars with the resulting adjustments charged or credited directly to Accumulated other comprehensive income (loss) in total equity. All assets and liabilities are translated into the U.S. dollar using exchange rates in effect at the balance sheet date, while revenues and expenses are translated at the weighted average
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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
exchange rates for the period. The gains or losses on foreign currency rates on cash holdings in foreign currencies are included in Effect of exchange rate changes on cash, cash equivalents and restricted cash in the Company’s Consolidated Statements of Cash Flows.
Cash Flow Hedges
The fair value of derivative contracts qualifying as cash flow hedges are reflected as assets or liabilities in the Consolidated Balance Sheets. The changes in fair value of these hedges are deferred in Accumulated other comprehensive income (loss). Amounts deferred in Accumulated other comprehensive income (loss) are reclassified to income when the hedged transaction has occurred in the same income statement line where the earnings effect of the hedged item is presented. Cash transactions related to the Company’s derivative contracts accounted for as hedges are classified in the same category as the item being hedged in the Consolidated Statements of Cash Flows.
When derivative contracts qualifying as cash flow hedges are settled, accelerated or restructured before the maturity date of the contracts, the related amount in Accumulated other comprehensive income (loss) at the settlement date is deferred and reclassified to earnings, when the originally designated hedged transaction impacts earnings, unless the underlying hedge transaction becomes probable of not occurring, at which time related amounts in Accumulated other comprehensive income (loss) are reclassified to earnings immediately.
Newmont assesses the effectiveness of the derivative contracts using a regression analysis, both retrospectively and prospectively, to determine whether the hedging instruments have been highly effective in offsetting changes in the fair value of the hedged items. The Company also assesses whether the hedging instruments are expected to be highly effective in the future. If a hedging instrument is not expected to be highly effective, the Company will stop hedge accounting prospectively. In those instances, the gains or losses remain in Accumulated other comprehensive income (loss) until the hedged item affects earnings. For option contracts, the Company excludes the time value from the measurement of effectiveness.
Stock-Based Compensation
The Company records stock-based compensation awards exchanged for employee services at fair value on the date of the grant and expenses the awards in the Consolidated Statements of Operations over the requisite employee service period. The fair value of stock options is determined using the Black-Scholes valuation model. The fair value of restricted stock units (“RSUs”) are based on the Newmont stock price on the date of grant. The fair value of performance leverage stock units (“PSUs”) is determined using a Monte Carlo simulation model. Stock-based compensation expense related to all awards, including awards with a market or performance condition that cliff vest, is generally recognized ratably over the requisite service period of the award on a straight-line basis. The Company recognizes forfeitures as they occur. The Company's estimates may be impacted by certain variables including, but not limited to, stock price volatility, employee retirement eligibility dates, the Company's performance and related tax impacts.
Net Income (Loss) per Common Share
Basic and diluted income per share are presented for Net income (loss) attributable to Newmont stockholders. Basic income per common share is computed by dividing income available to Newmont common stockholders by the weighted average number of common shares outstanding during the period. Diluted income per common share is computed similarly except that weighted average common shares is increased to reflect all dilutive instruments, including employee stock awards. The dilutive effects of Newmont’s dilutive securities are excluded from the calculation of diluted weighted average common shares outstanding if their effect would be anti-dilutive based on the treasury stock method or due to a net loss from continuing operations.
Discontinued Operations
The Company reports the results of operations of a business as discontinued operations if a disposal represents a strategic shift that has (or will have) a major effect on the Company’s operations and financial results when the business is classified as held for sale, in accordance with ASC 360, Property, Plant and Equipment and ASC 205-20, Presentation of Financial Statements - Discontinued Operations. Under ASC 360, assets may be classified as held for sale even though discontinued operations classification is not met. Equity method investments, which are specifically scoped out of ASC 360, can only be classified as held for sale if discontinued operations classification is also achieved. The results of discontinued operations are reported in Net income (loss) from discontinued operations, net of tax in the accompanying Consolidated Statements of Operations for current and prior periods, including any gain or loss recognized on closing or adjustment of the carrying amount to fair value less cost to sell.
Comprehensive Income (Loss)
In addition to Net income (loss), Comprehensive income (loss) includes all changes in equity during a period, such as adjustments to minimum pension liabilities, foreign currency translation adjustments, changes in fair value of derivative instruments that qualify as cash flow hedges and cumulative unrecognized changes in fair value of marketable debt securities classified as available-for-sale, except those resulting from investments by and distributions to owners.
Care and Maintenance
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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
The Company incurs certain direct operating costs and depreciation and amortization costs when operations are temporarily halted and placed in care and maintenance. Direct operating costs incurred while operations are temporarily placed in care and maintenance are included in Care and Maintenance as these costs do not benefit the productive process and are not related to sales. Depreciation and amortization costs incurred while operations are temporarily placed in care and maintenance are included in Depreciation and amortization.
Reclassifications
Certain amounts and disclosures in prior years have been reclassified to conform to the 2021 presentation.
Recently Adopted Accounting Pronouncements and Securities and Exchange Commission Rules
Accounting for Income Taxes
In December 2019, Accounting Standard Update ("ASU") No. 2019-12 was issued to simplify the accounting for income taxes, eliminate certain exceptions within Accounting Standard Codification ("ASC") 740, Income Taxes, and clarify certain aspects of the current guidance to promote consistency among reporting entities. The Company adopted this standard as of January 1, 2021. The adoption did not have a material impact on the Consolidated Financial Statements or disclosures.
Accounting for Equity Securities, Investments and Certain Forward Contracts and Options
In January 2020, ASU No. 2020-01 was issued which clarifies the interaction in accounting for equity securities under ASC 321, investments accounted for under the equity method of accounting in ASC 323 and the accounting for certain forward contracts and purchased options accounted for under ASC 815, Derivatives and Hedging. The Company adopted this standard as of January 1, 2021. The adoption did not have a material impact on the Consolidated Financial Statements or disclosures.
Financial Disclosures about Acquired and Disposed Businesses
In May 2020, the SEC finalized its proposed updates to Rule 3-05 within Regulation S-X, Financial statements of businesses acquired or to be acquired, Rule 3-14, Special instructions for real estate operations to be acquired; Article 11, Pro Forma Financial Information; and other related rules and forms (the “Rules”). The Rules include amendments, which among other things: revise significance tests used to determine disclosure requirements; require the financial statements of the acquired business to cover only up to the two most recent fiscal years; permit the use of, or reconciliation to, International Financial Reporting Standards as issued by the International Accounting Standards Board in certain circumstances; and amend certain pro forma financial information requirements. The Rules were adopted on January 1, 2021. The adoption did not have a material impact on the Consolidated Financial Statements or disclosures.
Recently Issued Accounting Pronouncements and Securities and Exchange Commission Rules
Effects of Reference Rate Reform
In March 2020, ASU No. 2020-04 was issued which provides optional guidance for a limited period of time to ease the potential burden on accounting for contract modifications caused by reference rate reform. In January 2021, ASU No. 2021-01 was issued which broadened the scope of ASU No. 2020-04 to include certain derivative instruments. The guidance is effective for all entities as of March 12, 2020 through December 31, 2022. The guidance may be adopted over time as reference rate reform activities occur and should be applied on a prospective basis. The Company is in the process of reviewing key contracts to identify any contracts that reference the London Interbank Offered Rate ("LIBOR") and to implement adequate fallback provisions if not already implemented to mitigate the risks or impacts from the transition. No material impacts are expected to the Consolidated Financial Statements or disclosures.
Financial Disclosures of Government Assistance
In November 2021, ASU No. 2021-10 was issued which provides guidance for required annual disclosures about transactions with a government that are accounted for by applying a grant or contribution accounting model by analogy. The guidance is effective for all entities for annual periods beginning after December 15, 2021. The Company is still completing its evaluation of the impact of ASU 2021-10. The Company does not expect the guidance to have a material impact on the Consolidated Financial Statements or disclosures.
NOTE 3     BUSINESS ACQUISITION
On January 14, 2019, the Company entered into a definitive agreement (as amended by the first amendment to the arrangement agreement, dated as of February 19, 2019, the “Arrangement Agreement”) to acquire all outstanding shares of Goldcorp, Inc. (“Goldcorp”), an Ontario corporation. On April 18, 2019 (“acquisition date”), pursuant to the Arrangement Agreement, Newmont completed the business acquisition of Goldcorp, in which Newmont was the acquirer. The acquisition of Goldcorp increased the Company’s gold and other metal reserves and expanded the operating jurisdictions.
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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
The acquisition date fair value of the consideration transferred consisted of the following:
Newmont stock issued (285 million shares at $33.04 per share)
$9,423 
Cash paid to Goldcorp shareholders17 
Other non-cash consideration16 
Total consideration$9,456 
The Company retained an independent appraiser to determine the fair value of assets acquired and liabilities assumed. In accordance with the acquisition method of accounting, the purchase price of Goldcorp has been allocated to the acquired assets and assumed liabilities based on their estimated acquisition date fair values. The fair value estimates were based on income, market and cost valuation methods. The excess of the total consideration over the estimated fair value of the amounts initially assigned to the identifiable assets acquired and liabilities assumed has been recorded as goodwill, which is not deductible for income tax purposes. The goodwill balance is mainly attributable to: (i) the acquisition of existing operating mines with access to an assembled workforce that cannot be duplicated at the same costs by new entrants; (ii) operating synergies anticipated from the integration of the operations of Newmont and Goldcorp; (iii) the application of Newmont’s Full Potential program and potential strategic and financial benefits that include the increase in reserve base and opportunities to identify additional mineralization through exploration activities; and (iv) the financial flexibility to execute capital priorities.
In April 2020, the Company completed the analysis to assign fair values to all assets acquired and liabilities assumed. The following table summarizes the final purchase price allocation for the Newmont Goldcorp transaction:
Assets:
Cash and cash equivalents$117 
Trade receivables95 
Investments169 
Equity method investments (1)
2,796 
Inventories500 
Stockpiles and ore on leach pads57 
Property, plant & mine development (2)
11,054 
Goodwill (3)
2,550 
Deferred income tax assets (4)
206 
Other assets508 
Total assets18,052 
Liabilities:
Debt (5)
3,304 
Accounts payable240 
Employee-related benefits190 
Income and mining taxes payable20 
Lease and other financing obligations423 
Reclamation and remediation liabilities (6)
897 
Deferred income tax liabilities (4)
1,430 
Silver streaming agreement (7)
1,165 
Other liabilities (8)
927 
Total liabilities8,596 
Net assets acquired$9,456 
____________________________
(1)The fair value of the equity method investments was determined by applying the income valuation method. The income valuation method relies on a discounted cash flow model and projected financial results. Discount rates for the discounted cash flow models are based on capital structures for similar market participants and included various risk premiums that account for risks associated with the specific investments.
(2)The fair value of property, plant and mine development is based on applying the income and cost valuation methods and includes a provision for the estimated fair value of asset retirement obligations related to the long-lived tangible assets.
(3)Goodwill attributable to the North America and South America reportable segments is $2,091 and $459, respectively. During the first quarter of 2020, the Company reclassified $84 of goodwill previously allocated to the Red Lake reporting unit, and included in Assets held for sale as of December 31, 2019, to other reporting units in the North America reportable segment as a result of refinements to deferred tax liability allocations during the first quarter that existed at the acquisition date. The Company disposed $47 of goodwill remaining at Red Lake on March 31, 2020 as part of the Red Lake Sale. See Note 10 for additional information.
(4)Deferred income tax assets and liabilities represent the future tax benefit or future tax expense associated with the differences between the fair value allocated to assets (excluding goodwill) and liabilities and the historical carryover tax basis of these assets and liabilities. No deferred tax liability is recognized for the basis difference inherent in the fair value allocated to goodwill.
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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
(5)The fair value of the Goldcorp Senior Notes is measured using a market approach, based on quoted prices for the acquired debt; $1,250 of borrowings under the term loan and revolving credit agreements approximate fair value.
(6)The fair value of reclamation and remediation liabilities is based on the expected amounts and timing of cash flows for closure activities and discounted to present value using a credit-adjusted risk-free rate as of the acquisition date. Key assumptions include the costs and timing of key closure activities based on the life of mine plans, including estimates and timing of monitoring and water management costs (if applicable) after the completion of initial closure activities.
(7)The fair value of the acquired silver streaming intangible liability is valued by using the income valuation method. Key assumptions in the income valuation method include long-term silver prices, level of silver production over the life of mine and discount rates.
(8)Other liabilities includes the balance of $450 related to unrecognized tax benefits, interest and penalties.
Pro Forma Financial Information
The following unaudited pro forma financial information presents consolidated results assuming the Goldcorp acquisition occurred on January 1, 2019.
Year Ended December 31, 2019
Sales$10,468 
Net income (loss) (1)
$2,666 
____________________________
(1)Included in Net income (loss) attributable to Newmont stockholders is $260 of Newmont Goldcorp transaction and integration costs for the year ended December 31, 2019.
NOTE 4     SEGMENT INFORMATION
The Company regularly reviews its segment reporting for alignment with its strategic goals and operational structure as well as for evaluation of business performance and allocation of resources by Newmont’s Chief Operating Decision Maker ("CODM") and has determined that its operations are organized into five geographic regions: North America, South America, Australia, Africa and Nevada, which also represent Newmont’s reportable and operating segments.
The Company’s investment in the Pueblo Viejo mine is included in the South America reportable segment within Other South America. All other equity method investments are included in Corporate and other.
The Company’s Nevada reportable segment included the Carlin, Phoenix, Twin Creeks and Long Canyon mines (“existing Nevada mining operations”). On July 1, 2019, the Company contributed its existing Nevada mining operations in exchange for a 38.5% ownership interest in NGM. See Note 1 for further information.
Notwithstanding the reportable segments structure, the Company internally reports information on a mine-by-mine basis for each mining operation and has chosen to disclose this information in the following tables. Income (loss) before income and mining tax and other items from reportable segments does not reflect general corporate expenses, interest (except project-specific interest) or income and mining taxes. Intercompany revenue and expense amounts have been eliminated within each segment in order to report on the basis that management uses internally for evaluating segment performance. Newmont’s business activities that are not included within the reportable segments are included in Corporate and Other. Although they are not required to be included in this footnote, they are provided for reconciliation purposes. The financial information relating to the Company’s segments is as follows:
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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
SalesCosts Applicable to SalesDepreciation and AmortizationAdvanced Projects, Research and Development and ExplorationIncome (Loss) before Income and Mining Tax and Other ItemsTotal Assets
Capital Expenditures(1)
Year Ended December 31, 2021
CC&V$396 $238 $66 $18 $64 $777 $42 
Musselwhite277 157 80 30 1,317 39 
Porcupine517 269 91 17 121 1,572 68 
Éléonore446 237 139 60 1,062 46 
Peñasquito:
Gold1,250 395 201 
Silver651 332 169 
Lead172 76 39 
Zinc561 256 112 
Total Peñasquito2,634 1,059 521 979 6,561 144 
Other North America— — 14 (32)66 — 
North America
4,270 1,960 911 60 1,222 11,355 339 
Yanacocha471 232 111 18 (1,552)1,735 171 
Merian780 326 98 11 328 952 47 
Cerro Negro480 243 137 68 2,183 108 
Other South America— — 35 (632)2,282 
South America
1,731 801 351 73 (1,788)7,152 328 
Boddington:
Gold1,212 607 99 
Copper295 143 23 
Total Boddington1,507 750 122 627 2,261 174 
Tanami879 278 100 24 466 1,334 304 
Other Australia— — 16 62 45 
Australia2,386 1,028 228 48 1,155 3,640 485 
Ahafo864 425 143 22 269 2,425 213 
Akyem680 261 120 10 284 990 66 
Other Africa— — — (11)— 
Africa1,544 686 263 34 542 3,418 279 
NGM2,291 960 550 30 818 7,584 234 
Nevada
2,291 960 550 30 818 7,584 234 
Corporate and Other— — 20 118 (841)7,415 28 
Consolidated$12,222 $5,435 $2,323 $363 $1,108 $40,564 $1,693 
____________________________
(1)Includes accrued costs associated with the Tanami Expansion of $29, which are included in Lease and other financing obligations, and an increase in accrued capital expenditures of $11. Consolidated capital expenditures on a cash basis were $1,653.

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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
SalesCosts Applicable to SalesDepreciation and AmortizationAdvanced Projects, Research and Development and ExplorationIncome (Loss) before Income and Mining Tax and Other ItemsTotal Assets
Capital Expenditures(1)
Year Ended December 31, 2020
CC&V$478 $245 $80 $15 $129 $755 $41 
Red Lake (2)
67 45 20 — 
Musselwhite180 117 62 (40)1,324 58 
Porcupine566 244 109 17 171 1,565 43 
Éléonore371 181 109 47 1,115 43 
Peñasquito:
Gold894 286 168 
Silver510 201 117 
Lead134 77 45 
Zinc348 221 121 
Total Peñasquito1,886 785 451 544 6,824 127 
Other North America— — 27 (88)100 
North America
3,548 1,617 840 56 783 11,683 318 
Yanacocha593 345 123 12 (165)1,832 111 
Merian822 328 102 11 375 993 42 
Cerro Negro404 166 139 2,139 49 
Other South America— — 31 (57)2,736 
South America
1,819 839 371 58 161 7,700 204 
Boddington:
Gold1,221 579 102 
Copper155 107 19 
Total Boddington1,376 686 121 526 2,238 160 
Tanami871 251 102 16 442 1,095 212 
Other Australia— — 16 448 59 
Australia2,247 937 230 35 1,416 3,392 380 
Ahafo853 375 145 22 278 2,224 120 
Akyem671 234 120 291 1,000 27 
Other Africa— — — (12)— 
Africa1,524 609 265 34 557 3,227 147 
NGM2,359 1,012 579 42 700 7,753 241 
Nevada2,359 1,012 579 42 700 7,753 241 
Corporate and Other— — 15 84 (474)7,614 49 
Consolidated$11,497 $5,014 $2,300 $309 $3,143 $41,369 $1,339 
____________________________
(1)Includes an increase in accrued capital expenditures of $37; consolidated capital expenditures on a cash basis were $1,302.
(2)On March 31, 2020, the Company sold Red Lake. Refer to Note 10 for additional information.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
SalesCosts Applicable to SalesDepreciation and AmortizationAdvanced Projects, Research and Development and ExplorationIncome (Loss) before Income and Mining Tax and Other ItemsTotal Assets
Capital Expenditures(1)
Year Ended December 31, 2019
CC&V$445 $290 $95 $13 $39 $770 $35 
Red Lake (2)(3)
159 136 50 (47)589 29 
Musselwhite (2)(4)
13 28 (6)1,301 60 
Porcupine (2)
338 185 66 14 58 1,859 61 
Éléonore (2)
378 214 80 65 1,323 55 
Peñasquito: (2)
Gold209 116 43 
Silver253 181 66 
Lead85 77 29 
Zinc143 129 55 
Total Peñasquito690 503 193 (58)7,038 128 
Other North America— — 22 (161)
North America2,017 1,341 534 60 (110)12,884 376 
Yanacocha735 400 113 24 83 1,803 185 
Merian734 297 93 11 331 990 56 
Cerro Negro (2)
502 210 111 22 132 2,213 55 
Other South America— — 12 40 (67)2,809 
South America1,971 907 329 97 479 7,815 297 
Boddington:
Gold999 575 106 
Copper166 117 22 
Total Boddington1,165 692 128 330 2,148 78 
Tanami697 266 96 12 314 966 124 
Kalgoorlie (3)
319 216 27 67 434 34 
Other Australia— — 24 (32)62 10 
Australia2,181 1,174 258 45 679 3,610 246 
Ahafo880 393 160 33 295 2,057 213 
Akyem585 235 150 14 176 993 33 
Other Africa— — — (16)— 
Africa1,465 628 310 53 455 3,053 246 
NGM (5)
1,022 494 298 22 203 8,096 138 
Carlin (6)
533 358 107 15 46 — 64 
Phoenix: (6)
Gold151 116 33 
Copper44 28 
Total Phoenix195 144 42 29 — 13 
Twin Creeks (6)
230 113 31 89 — 30 
Long Canyon (6)
126 36 36 12 40 — 
Other Nevada (6)
— — (9)— 
Nevada2,106 1,145 516 63 398 8,096 257 
Corporate and Other— — 13 97 1,792 4,516 32 
Consolidated$9,740 $5,195 $1,960 $415 $3,693 $39,974 $1,454 
____________________________
(1)Includes a decrease in accrued capital expenditures of $9; consolidated capital expenditures on a cash basis were $1,463.
(2)Sites acquired as part of the Newmont Goldcorp transaction, effective April 18, 2019.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
(3)On January 2, 2020, the Company sold its 50% interest in Kalgoorlie and on March 31, 2020, the Company sold Red Lake. There were no operating results at Kalgoorlie for the year ended December 31, 2020. The assets and liabilities of these sites were classified as held for sale on the Consolidated Balance Sheet as of December 31, 2019. Refer to Note 10 for additional information.
(4)Costs applicable to sales are partially offset by insurance recoveries received during 2019. Refer to Note 11 for additional information.
(5)For the year ended December 31, 2019, the Company billed NGM $213 for services provided under the employee lease agreement. The leasing period expired on December 31, 2019.
(6)Newmont contributed its existing Nevada mining operations in exchange for a 38.5% interest in NGM, effective July 1, 2019. Amounts include sales of finished goods inventory retained and not contributed to NGM on the effective date, pursuant to the Nevada JV Agreement.
Long-lived assets, which primarily consist of Property, plant and mine development, net and non-current Stockpiles and ore on leach pads, were as follows:
At December 31,
20212020
United States$7,462 $7,631 
Mexico4,795 5,032 
Canada4,031 3,557 
Australia3,258 2,923 
Ghana2,517 2,468 
Peru1,680 2,148 
Argentina1,526 1,562 
Suriname742 762 
$26,011 $26,083 
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
NOTE 5     SALES
The following tables present the Company’s Sales by mining operation, product and inventory type:
Gold Sales from Doré ProductionSales from Concentrate and Other ProductionTotal Sales
Year Ended December 31, 2021
CC&V$382 $14 $396 
Musselwhite 277 — 277 
Porcupine 517 — 517 
Éléonore 446 — 446 
Peñasquito:
Gold207 1,043 1,250 
Silver (1)
— 651 651 
Lead— 172 172 
Zinc— 561 561 
Total Peñasquito207 2,427 2,634 
North America1,829 2,441 4,270 
Yanacocha451 20 471 
Merian780 — 780 
Cerro Negro 480 — 480 
South America1,711 20 1,731 
Boddington:
Gold311 901 1,212 
Copper— 295 295 
Total Boddington311 1,196 1,507 
Tanami879 — 879 
Australia1,190 1,196 2,386 
Ahafo864 — 864 
Akyem680 — 680 
Africa1,544 — 1,544 
NGM (2)
2,216 75 2,291 
Nevada2,216 75 2,291 
Consolidated$8,490 $3,732 $12,222 
____________________________
(1)Silver sales from concentrate includes $79 related to non-cash amortization of the silver streaming agreement liability.
(2)The Company purchases its proportionate share of gold doré from NGM for resale to third parties. Gold doré purchases from NGM totaled $2,212 for the year ended December 31, 2021.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Gold Sales from Doré ProductionSales from Concentrate and Other ProductionTotal Sales
Year Ended December 31, 2020
CC&V $478 $— $478 
Red Lake (1)
67 — 67 
Musselwhite180 — 180 
Porcupine566 — 566 
Éléonore371 — 371 
Peñasquito:
Gold84 810 894 
Silver (2)
— 510 510 
Lead— 134 134 
Zinc— 348 348 
Total Peñasquito84 1,802 1,886 
North America1,746 1,802 3,548 
Yanacocha592 593 
Merian822 — 822 
Cerro Negro404 — 404 
South America1,818 1,819 
Boddington:
Gold290 931 1,221 
Copper— 155 155 
Total Boddington290 1,086 1,376 
Tanami871 — 871 
Australia1,161 1,086 2,247 
Ahafo853 — 853 
Akyem671 — 671 
Africa1,524 — 1,524 
NGM (3)
2,285 74 2,359 
Nevada2,285 74 2,359 
Consolidated$8,534 $2,963 $11,497 
____________________________
(1)On March 31, 2020, the Company sold Red Lake. Refer to Note 10 for additional information.
(2)Silver sales from concentrate includes $67 related to non-cash amortization of the silver streaming agreement liability.
(3)The Company purchases its proportionate share of gold doré from NGM for resale to third parties. Gold doré purchases from NGM totaled $2,293 for the year ended December 31, 2020.

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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Gold Sales from Doré ProductionSales from Concentrate and Other ProductionTotal Sales
Year Ended December 31, 2019
CC&V$445 $— $445 
Red Lake (1)
159 — 159 
Musselwhite (1)
— 
Porcupine (1)
338 — 338 
Éléonore (1)
378 — 378 
Peñasquito: (1)
Gold17 192 209 
Silver (2)
— 253 253 
Lead— 85 85 
Zinc— 143 143 
Total Peñasquito17 673 690 
North America1,344 673 2,017 
Yanacocha735 — 735 
Merian734 — 734 
Cerro Negro (1)
502  502 
South America1,971 — 1,971 
Boddington:
Gold238 761 999 
Copper— 166 166 
Total Boddington238 927 1,165 
Tanami697 — 697 
Kalgoorlie (3)
319 — 319 
Australia1,254 927 2,181 
Ahafo880 — 880 
Akyem585 — 585 
Africa1,465 — 1,465 
NGM1,000 22 1,022 
Carlin (4)
533 — 533 
Phoenix: (4)
Gold52 99 151 
Copper— 44 44 
Total Phoenix52 143 195 
Twin Creeks (4)
230 — 230 
Long Canyon (4)
126 — 126 
Nevada (5)
1,941 165 2,106 
Consolidated$7,975 $1,765 $9,740 
____________________________
(1)Sites acquired as part of the Newmont Goldcorp transaction, effective April 18, 2019.
(2)Silver sales from concentrate includes $37 related to non-cash amortization of the silver streaming agreement liability.
(3)On January 2, 2020, the Company sold its 50% interest in Kalgoorlie. There were no operating results at Kalgoorlie for the years ended December 31, 2021 and 2020. Refer to Note 10 for additional information.
(4)Newmont contributed its existing Nevada mining operations in exchange for a 38.5% interest in NGM, effective July 1, 2019.
(5)The Company purchases its proportionate share of gold doré from NGM for resale to third parties. Gold doré purchases from NGM totaled $1,002 for the year ended December 31, 2019.
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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Trade Receivables
The following table details the receivables included within Trade receivables:
At December 31,
2021
At December 31,
2020
Receivables from Sales:
Gold sales from doré production$40 $59 
Sales from concentrate and other production297 390 
Total receivables from Sales$337 $449 
Provisional Sales
The Company sells gold, copper, silver, lead and zinc concentrates on a provisional basis. Provisional concentrate sales contain an embedded derivative that is required to be separated from the host contract for accounting purposes. The host contract is the receivable from the sale of the concentrates at the prevailing indices’ prices at the time of sale. The embedded derivative, which is not designated for hedge accounting treatment, is marked to market through earnings each period prior to final settlement with unrealized gains and losses recognized within sales through earnings.
The impact to Sales from revenue recognized due to the changes in pricing is an increase (decrease) of $32, $80 and $22 for the years ended December 31, 2021, 2020, and 2019, respectively.
At December 31, 2021, Newmont had the following provisionally priced concentrate sales subject to final pricing over the next several months:
Provisionally Priced Sales
Subject to Final Pricing
Average Provisional
Price (per ounce/pound)
Gold (ounces/thousands) 171 $1,807 
Copper (pounds/millions)25 $4.39 
Silver (ounces/millions)5$23.09 
Lead (pounds/millions)22$1.06 
Zinc (pounds/millions)58$1.62 
Silver Streaming Agreement
As a part of the Newmont Goldcorp transaction, the Company assumed the Silver streaming agreement liability related to silver production from the Peñasquito mine in the North America segment. Pursuant to the agreement, the Company is obligated to sell 25% of silver production from the Peñasquito mine to Wheaton Precious Metals Corporation at the lesser of market price or a fixed contract price, subject to an annual inflation adjustment of up to 1.65%. This agreement contains off-market terms and was initially recognized at its acquisition date fair value as a finite-lived intangible liability. The Company’s policy is to amortize the liability into Sales each period using the units-of-production method. During the years ended December 31, 2021, 2020, and 2019, the Company amortized $79, $67, and $37, respectively, of the Silver streaming agreement liability into revenue. At December 31, 2021 and 2020, the value of the liability included in the Consolidated Balance Sheet was $981 and $1,060, respectively.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Revenue by Geographic Area
Newmont primarily conducts metal sales in U.S. dollars, and therefore Sales are not exposed to fluctuations in foreign currencies. Revenues from sales attributed to countries based on the customer’s location were as follows:
Years Ended December 31,
202120202019
United Kingdom$8,404 $8,489 $7,980 
South Korea1,665 1,317 538 
Mexico642 277 190 
Japan386 244 172 
Germany282 277 203 
Switzerland275 243 120 
Philippines264 242 293 
United States62 97 78 
Other (1)
242 311 166 
$12,222 $11,497 $9,740 
____________________________
(1)Other includes $79, $67, and $37 related to non-cash amortization of the Silver streaming agreement liability for the years ended December 31, 2021, 2020, and 2019, respectively.
Revenue by Major Customer
As gold can be sold through numerous gold market traders worldwide, the Company is not economically dependent on a limited number of customers for the sale of its product. In 2021, sales to Standard Chartered were $4,634 (38%) and JPMorgan Chase were $2,002 (17%) of total gold sales. In 2020, sales to JPMorgan Chase were $2,775 (24%) and Standard Chartered were $2,737 (24%) of total gold sales. In 2019 sales to Standard Chartered were $2,907 (30%), JPMorgan Chase were $1,780 (18%) and Toronto Dominion Bank were $1,204 (12%) of total gold sales.
The Company sells silver, lead, zinc and copper predominantly in the form of concentrates which are sold directly to smelters located in Asia and to a lesser extent North America and Europe. The concentrates are sold under long-term supply contracts with processing fees based on the demand for these concentrates in the global market place.
NOTE 6     RECLAMATION AND REMEDIATION
The Company’s mining and exploration activities are subject to various domestic and international laws and regulations governing the protection of the environment. These laws and regulations are continually changing and are generally becoming more restrictive. The Company conducts its operations to protect public health and the environment and believes its operations are in compliance with applicable laws and regulations in all material respects. The Company has made, and expects to make in the future, expenditures to comply with such laws and regulations, but cannot predict the full amount of such future expenditures. Estimated future reclamation and remediation costs are based principally on current legal and regulatory requirements.
The Company’s Reclamation and remediation expense consisted of:
Years Ended December 31,
202120202019
Reclamation adjustments and other$1,633 $180 $77 
Reclamation accretion125 134 133 
Total reclamation expense1,758 314 210 
Remediation adjustments and other82 46 65 
Remediation accretion
Total remediation expense88 52 70 
$1,846 $366 $280 
In 2021, reclamation adjustments were primarily comprised of $1,554 related to portions of the Yanacocha site operations that are no longer in production and with no expected substantive future economic value (i.e., non-operating). Refer to Note 26 for further discussion. In 2020, reclamation adjustments primarily related to increased lime consumption and water treatment costs at non-operating Yanacocha sites and an update to the project cost estimates at non-operating Porcupine sites that resulted in increases of $152 and $16, respectively. In 2019, reclamation adjustments primarily related to updated water management costs at non-operating
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Yanacocha sites and an update of the project cost estimates at Mule Canyon and Northumberland mine sites that resulted in increases of $62, $9 and $4, respectively.

In 2021, remediation adjustments are primarily due to revisions to estimated construction costs of the water treatment plant at the Midnite Mine and higher estimated closure cost arising from recent tailings management review and monitoring requirements set forth by the Global Industry Standard on Tailings Management ("GISTM"). In 2020, remediation adjustments primarily related to project execution delays due to COVID-19 and updated project cost estimates at the Midnite mine and Dawn mill sites of $27 and other remediation project spend at other sites. In 2019, remediation adjustments primarily related to updated project cost estimates at the Midnite mine and Dawn mill sites and increased water management cost estimates at Con mine that resulted in increases of $36 and $9, respectively.
The following are reconciliations of Reclamation and remediation liabilities:
ReclamationRemediationTotal
Balance at January 1, 2020$3,334 $299 $3,633 
Additions, changes in estimates and other312 33 345 
Adjustment from the Newmont Goldcorp transaction15 — 15 
Payments, net(76)(25)(101)
Accretion expense134 140 
Balance at December 31, 20203,719 313 4,032 
Additions, changes in estimates and other2,045 67 2,112 
Other acquisitions and divestitures(3)(2)
Payments, net(118)(43)(161)
Accretion expense125 131 
Balance at December 31, 2021 (1)
$5,768 $344 $6,112 
____________________________
(1)Total reclamation liabilities includes $3,250 related to Yanacocha.
At December 31,
20212020
ReclamationRemediationTotalReclamationRemediationTotal
Current (1)
$213 $60 $273 $164 $50 $214 
Non-current (2)
5,555 284 5,839 3,555 263 3,818 
Total$5,768 $344 $6,112 $3,719 $313 $4,032 
____________________________
(1)The current portion of reclamation and remediation liabilities are included in Other current liabilities. Refer to Note 23.
(2)The non-current portion of reclamation and remediation liabilities are included in Reclamation and remediation liabilities.
The Company is also involved in several matters concerning environmental remediation obligations associated with former, primarily historic, mining activities. Generally, these matters concern developing and implementing remediation plans at the various sites involved. Depending upon the ultimate resolution of these matters, the Company believes that it is reasonably possible that the liability for these matters could be as much as 45% greater or —% lower than the amount accrued at December 31, 2021. These amounts are included in Other current liabilities and Reclamation and remediation liabilities. The amounts accrued are reviewed periodically based upon facts and circumstances available at the time. Changes in estimates are recorded in Reclamation and remediation in the period estimates are revised.
Included in Other non-current assets at December 31, 2021 and 2020 are $49 and $56 respectively, of non-current restricted cash held for purposes of settling reclamation and remediation obligations. Of the amounts at December 31, 2021, $40 was related to the Ahafo and Akyem mines in Ghana, Africa and $4 related to NGM in Nevada, United States, $3 was related to the Midnite mine and Dawn mill site in Washington, United States and $2 was related to the Ross Adams Mine in Alaska, United States. Of the amounts at December 31, 2020, $48 was related to the Ahafo and Akyem mines in Ghana, Africa, $6 related to NGM in Nevada, United States and $2 was related to the Midnite mine and Dawn mill site in Washington, United States.
Included in Other non-current assets at December 31, 2021 and 2020 was $51 and $38, respectively, of non-current restricted investments, which are legally pledged for purposes of settling reclamation and remediation obligations. Of the amounts at December 31, 2021, $11 is related to the Midnite mine and Dawn mill sites in Washington, United States, $16 related to Akyem in Ghana, Africa and $24 is related to San Jose Reservoir in Peru, South America. Of the amounts at December 31, 2020, $14 is related to the Midnite mine and Dawn mill sites in Washington, United States and $24 is related to San Jose Reservoir in Peru, South America.
Refer to Note 26 for further discussion of reclamation and remediation matters.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
NOTE 7     CARE AND MAINTENANCE
Care and maintenance costs represent direct operating costs and depreciation and amortization costs incurred during the period the sites were temporarily placed into care and maintenance or operating at reduced levels in response to the COVID-19 pandemic. The following table includes direct operating costs incurred and reported as Care and maintenance:
Year Ended December 31,
202120202019
Tanami$$— $— 
Musselwhite— 28 — 
Éléonore— 26 — 
Peñasquito— 38 — 
Yanacocha— 27 — 
Cerro Negro— 56 — 
Other South America— — 
$$178 $— 
Additionally, for the year ended December 31, 2021, the Company recognized non-cash care and maintenance costs included in Depreciation and amortization of $3 at Tanami. For the year ended December 31, 2020, the Company recognized non-cash care and maintenance costs included in Depreciation and amortization of $7 at Musselwhite, $16 at Éléonore, $28 at Peñasquito, $7 at Yanacocha and $30 at Cerro Negro.
NOTE 8     LOSS ON ASSETS HELD FOR SALE
In the third quarter of 2021, the Company entered into a binding agreement to sell certain equipment and assets originally acquired for the Conga project in Peru within our South America segment (the "Conga mill assets") for total cash proceeds of $68. Pursuant to the terms of the agreement, the sale is expected to close upon the delivery of the assets and receipt of the final payment at which time title and control of the assets will transfer, currently expected to occur within approximately one year. As of December 31, 2021, the Company has received payments of $17 included in Other current liabilities.
Prior to entering the binding agreement, the Conga mill assets, which were otherwise expected to be used in future operations associated with the long-term development of the Conga project, had a carrying value of $593 included in Property, plant and mine development, net. Upon entering the binding agreement, the Conga mill assets were reclassified as held for sale, included in Other current assets on our Consolidated Balance Sheet as of December 31, 2021, and remeasured at fair value less costs to sell. Refer to Note 15 for further information. As a result, a loss of $571 was recognized and included in Loss on assets held for sale within the Consolidated Statements of Operations for the year ended December 31, 2021.
The remaining total assets at Conga as of December 31, 2021 were approximately $900. As of December 31, 2021, the Company has not identified events or changes in circumstances that indicate that the remaining carrying value of the Conga project is not recoverable. Although the Company has entered into the binding agreement to sell the Conga mill assets, it will continue to evaluate long-term options to progress development of the Conga project.
NOTE 9     OTHER EXPENSE, NET
Year Ended December 31,
202120202019
COVID-19 specific costs$87 $92 $— 
Impairment of long-lived and other assets25 49 
Settlement costs11 58 
Restructuring and severance11 18 
Goldcorp transaction and integration costs— 23 217 
Nevada JV transaction and implementation costs— — 30 
Other26 15 36 
$160 $255 $300 
COVID-19 specific costs. COVID-19 specific costs represent incremental direct costs incurred, including but not limited to contributions to the Newmont Global Community Support Fund, additional health screenings, incremental travel, security and employee related costs as well as various other incremental costs incurred as a result of actions taken to protect against the impacts of the COVID-19 pandemic and to comply with local mandates. The Company established the Newmont Global Community Support Fund to help host communities, governments and employees combat the COVID-19 pandemic. For the years ended December 31, 2021 and 2020, $3 and $11 were distributed from this fund, respectively.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Impairment of long-lived and other assets. Impairment of long-lived and other assets represents non-cash write-downs of various assets that are no longer in use.
Settlement costs. Settlement costs for the year ended December 31, 2021 are primarily comprised of a $10 voluntary contribution made to the Republic of Suriname and other certain costs associated with legal and other settlements. Settlement costs for the year ended December 31, 2020 primarily include costs related to the ecological tax obligation at Peñasquito in Mexico, mineral interest settlements at Ahafo and Akyem in Africa, the Cedros community agreement at Peñasquito in Mexico, a water related settlement at Yanacocha in Peru and other related costs. Settlement costs for the year ended December 31, 2019 include legal and other settlements.
Restructuring and severance. Restructuring and severance primarily represents severance and related costs associated with significant organizational and operating model changes implemented by the Company for all periods presented.
Goldcorp transaction and integration costs. Goldcorp transaction and integration costs for the years ended December 31, 2020 and 2019 primarily include integration activities and related investment banking and legal costs, severance, accelerated share award payments and consulting services.
Nevada JV transaction and implementation costs. Nevada JV transaction and implementation costs for the year ended December 31, 2019 primarily represent legal and hostile defense fees, investment banking fees and severance costs incurred related to the Nevada JV Agreement.
NOTE 10     GAIN ON ASSET AND INVESTMENT SALES, NET
Year Ended December 31,
202120202019
Sale of Kalgoorlie$83 $493 $— 
Exchange of Lone Tree79 — — 
Sale of TMAC42 — — 
Sale of Continental— 91 — 
Sale of royalty interests— 75 — 
Sale of Red Lake— — 
Gain on formation of MARA— — 
Other30 
$212 $677 $30 

Sale of Kalgoorlie. On January 2, 2020, the Company completed the sale of its 50% interest in Kalgoorlie Consolidated Gold Mines (“Kalgoorlie”), included as part of the Australia segment, to Northern Star Resources Limited (“Northern Star”). Pursuant to the terms of the agreement, the Company received cash proceeds of $800. The proceeds were inclusive of a $25 payment that gave Northern Star specified exploration tenements, transitional services support and an option to negotiate exclusively for the purchase of Newmont’s Kalgoorlie power business for fair market value. In December 2021, the Company completed the sale of the Kalgoorlie power business to Northern Star for proceeds of $95, inclusive of the $25 deposit received in 2020. The Company received $70 in cash proceeds during 2021 and recognized a gain of $83, included in Gain on asset and investment sales, net.
Exchange of Lone Tree. For further information related to the exchange of the Lone Tree and South Arturo properties at NGM, refer to Note 1.
Sale of TMAC. For further information related to the sale of investment holdings in TMAC Resources, Inc. ("TMAC"), refer to Note 16.
Sale of Continental. On March 4, 2020, the Company completed the sale of its entire interest in Continental Gold, Inc. ("Continental"), including its convertible debt, to Zijin Mining Group. Pursuant to the terms of the agreement, the Company received cash proceeds of $253, resulting in recognition of a gain of $91 included in Gain on asset and investment sales, net.
Sale of royalty interests. In 2020, the Company completed the sale of certain royalty interests to Maverix Metals Inc. ("Maverix"), with a carrying value of $—, for cash consideration and additional equity ownership in Maverix. The Company received total consideration of $75 from Maverix, consisting of $15 in cash and $60 in equity (12 million common shares at $5.02 per share). In addition, the Company will receive up to $15 in contingent cash payments payable upon completion of certain milestones.
Sale of Red Lake. On March 31, 2020, the Company completed the sale of the Red Lake complex in Ontario, Canada, included in the Company’s North America segment, to Evolution Mining Limited. Pursuant to the terms of the agreement, the Company received total consideration of $429, including cash proceeds of $375, $15 towards working capital (received in cash in the second quarter of 2020), and the potential to receive contingent payments of up to an additional $100 tied to new mineralization discoveries over a
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
fifteen year period. The contingent payments are considered an embedded derivative with a fair value of $42 and $42 at December 31, 2021 and December 31, 2020, respectively. For further information, refer to Note 15.
Gain on formation of MARA. In December 2020, the Company contributed its 37.5% ownership interest in Alumbrera in exchange for 18.75% ownership interest in Minera Agua Rica Alumbrera Limited ("MARA"), a joint venture with Glencore International AG (“Glencore”) and Yamana Gold Inc. (“Yamana”) consisting of the Alumbrera mine and the Agua Rica project, located in Argentina. The 18.75% ownership interest in MARA is accounted for as an equity security as of December 31, 2021. The carrying value of our investment in Alumbrera was $47 on the date of the exchange. The equity security in MARA is accounted for under the measurement alternative and was recorded at $53, resulting in a gain of $6 recognized in Gain on asset and investment sales, net.
NOTE 11     OTHER INCOME (LOSS), NET
Year Ended December 31,
202120202019
Change in fair value of investments$(135)$252 $166 
Foreign currency exchange, net23 (73)(7)
Interest18 24 57 
Charges from debt extinguishment(11)(77)— 
Pension settlements and curtailments(4)(92)20 
Impairment of investments(1)(93)(2)
Insurance proceeds— — 38 
Other23 27 25 
$(87)$(32)$297 
Change in fair value of investments. Change in fair value of investments primarily represents unrealized holding gains and losses related to the Company's investments in current and non-current marketable equity securities.
Pension settlements and curtailments. Pension settlements and curtailments primarily represents pension settlement charges due to lump sum payments to participants in 2021 and 2020 and pension curtailments gains in 2019. For additional information regarding pension and other post-employment benefits, see Note 13.
Charges from debt extinguishment. In 2021, the Company recorded charges from debt extinguishment of $11 related to the early redemption of its Senior Notes due March 15, 2022 ("2022 Senior Notes") and the debt tender offer of its Newmont Senior Notes due March 15, 2023 (“2023 Newmont Senior Notes”) and its Goldcorp Senior Notes due March 15, 2023 (“2023 Goldcorp Senior Notes”). In 2020, the Company recorded charges from debt extinguishment of $69 related to the debt tender offer of its Senior Notes due March 15, 2022 ("2022 Senior Notes"), its Newmont Senior Notes due March 15, 2023 (“2023 Newmont Senior Notes”) and its Goldcorp Senior Notes due March 15, 2023 (“2023 Goldcorp Senior Notes”), and a loss of $8 related to the forward starting swaps associated with the 2022 Senior Notes, reclassified from Accumulated other comprehensive income (loss).
Impairment of investments. During the first quarter of 2020, the Company recognized an other-than-temporary impairment on the carrying value of TMAC of $93.
NOTE 12     INCOME AND MINING TAXES
The Company’s Income and mining tax benefit (expense) consisted of:
Year Ended December 31,
202120202019
Current:
United States$(71)$(35)$
Foreign(1,136)(891)(500)
(1,207)(926)(498)
Deferred:
United States72 (340)
Foreign104 150 
109 222 (334)
$(1,098)$(704)$(832)
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
The Company’s Income (loss) before income and mining tax and other items consisted of:
Year Ended December 31,
202120202019
United States$247 $631 $2,396 
Foreign861 2,512 1,297 
$1,108 $3,143 $3,693 
The Company’s Income and mining tax benefit (expense) differed from the amounts computed by applying the United States statutory corporate income tax rate for the following reasons:
Years Ended December 31,
202120202019
Income (loss) before income and mining tax and other items$1,108 $3,143 $3,693 
U.S. Federal statutory tax rate21 %$(233)21 %$(660)21 %$(776)
Reconciling items:
Percentage depletion(7)71 (2)77 (1)55 
Change in valuation allowance on deferred tax assets38 (419)(186)(8)296 
Rate differential for foreign earnings indefinitely reinvested10 (108)(268)(140)
Mining and other taxes (net of associated federal benefit)15 (173)(151)(90)
Uncertain tax position reserve adjustment(99)(1)21 (70)
Tax impact on sale of Kalgoorlie— — (11)353 — — 
Expiration of U.S. Capital Losses14 (152)— — (34)
Other(1)15 (4)110 (73)
Income and mining tax benefit (expense)99 %$(1,098)22 %$(704)23 %$(832)
Factors that Significantly Impact Effective Tax Rate (Other than Factors Described Separately Below)
Percentage depletion allowances (tax deductions for depletion that may exceed the tax basis in the mineral reserves) are available to the Company under the income tax laws of the United States for operations conducted in the United States or through branches and partnerships owned by U.S. subsidiaries included in the consolidated United States income tax return. These deductions are highly sensitive to the price of gold and other minerals produced by the Company.
The Company operates in various jurisdictions around the world that have statutory tax rates that are significantly different than those of the U.S. These differences combine to move the overall effective tax rate higher than the U.S. statutory rate.
Mining taxes in Nevada, Mexico, Canada, Peru and Australia represent state and provincial taxes levied on mining operations and are classified as income taxes as such taxes are based on a percentage of mining profits.
In the U.S., capital losses may be carried forward five years to offset capital gains. Capital loss carryforwards of $152, $—, and $34, expired in 2021, 2020 and 2019, respectively. The Company carries a full valuation allowance on U.S. capital losses.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Components of the Company's deferred income tax assets (liabilities) are as follows:
At December 31,
20212020
Deferred income tax assets:
Property, plant and mine development$928 $996 
Inventory87 62 
Reclamation and remediation1,500 892 
Net operating losses, capital losses and tax credits 1,908 1,843 
Investment in partnerships and subsidiaries 26 340 
Employee-related benefits146 162 
Derivative instruments and unrealized loss on investments74 25 
Foreign Exchange and Financing Obligations62 82 
Silver Streaming Agreement311 349 
Other124 112 
5,166 4,863 
Valuation allowances(3,791)(3,418)
$1,375 $1,445 
Deferred income tax liabilities:
Property, plant and mine development$(2,409)$(2,303)
Inventory(58)(110)
Derivative instruments and unrealized gain on investments(730)(726)
Other(53)(42)
(3,250)(3,181)
Net deferred income tax assets (liabilities)$(1,875)$(1,736)
These amounts reflect the classification and presentation that is reported for each tax jurisdiction in which the Company operates.
Valuation of Deferred Tax Assets
The Company assesses the available positive and negative evidence to estimate if sufficient future taxable income will be generated to utilize the existing deferred tax assets. A significant piece of objective negative evidence evaluated was the recent pretax losses and/or expectations of future pretax losses. Such objective evidence limits the ability to consider other subjective evidence such as our projections for future growth. On the basis of this evaluation, a valuation allowance has been recorded in Peru. However, the amount of the deferred tax asset considered realizable could be adjusted if estimates of future taxable income during the carryforward period are increased, if objective negative evidence in the form of cumulative losses is no longer present or if additional weight were given to subjective evidence such as our projections for growth.
During 2021, the Company recorded additional valuation allowance of $419 to tax expense, primarily driven by the increased deferred tax asset resulting from the adjustment to the Yanacocha reclamation obligation in Peru as further discussed in Note 6 and partially offset by a release in the U.S. and Canada. There were additional valuation allowance increases related to other components of the financial statements of $46.
Refer to Note 2 for additional risk factors that could impact the Company’s ability to realize the deferred tax assets.
Tax Loss Carryforwards, Foreign Tax Credits, and Canadian Tax Credits
At December 31, 2021 and 2020, the Company had (i) $2,020 and $1,726 of net operating loss carry forwards, respectively; and (ii) $669 and $659 of tax credit carry forwards, respectively. At December 31, 2021 and 2020, $586 and $502, respectively, of net operating loss carry forwards are attributable to the U.S., Australia and France for which current tax law provides no expiration period. The net operating loss carry forward in Canada of $1,169 will expire by 2041. The net operating loss carryforward in Mexico of $133 will expire in 2031. The net operating loss carry forward in other countries is $132.
Tax credit carry forwards for 2021 and 2020 of $510 and $510, respectively, consist of foreign tax credits available in the United States; substantially all such credits not utilized will expire at the end of 2031. Canadian tax credits for 2021 and 2020 of $159 and $149, respectively, consist of investment tax credits and minimum mining tax credits. Canadian investment tax credits of $84 will substantially expire by 2035, mining tax credits of $12 will expire by 2041, and the other Canadian tax credits of $63 do not expire.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Company’s Unrecognized Tax Benefits
A reconciliation of the beginning and ending amount of gross unrecognized tax benefits, exclusive of interest and penalties, is as follows:
202120202019
Total amount of gross unrecognized tax benefits at beginning of year$237 $326 $43 
Additions due to acquisition of Goldcorp— — 350 
Additions (reductions) for tax positions of prior years 36 (33)
Additions for tax positions of current year — 34 
Reductions due to settlements with taxing authorities (26)(58)(102)
Reductions due to lapse of statute of limitations (2)(2)— 
Total amount of gross unrecognized tax benefits at end of year$245 $237 $326 
At December 31, 2021, 2020 and 2019, $335, $369 and $459, respectively, represent the amount of unrecognized tax benefits, inclusive of interest and penalties that, if recognized, would impact the Company’s effective income tax rate.
The Company operates in numerous countries around the world and is subject to, and pays annual income taxes under, the various income tax regimes in the countries in which it operates. Some of these tax regimes are defined by contractual agreements with the local government, and others are defined by the general corporate income tax laws of the country. The Company has historically filed, and continues to file, all required income tax returns and paid the taxes reasonably determined to be due. The tax rules and regulations in many countries are highly complex and subject to interpretation. From time to time, the Company is subject to a review of its historic income tax filings and in connection with such reviews, disputes can arise with the taxing authorities over the interpretation or application of certain rules to the Company’s business conducted within the country involved.
The Australian Taxation Office (“ATO”) is conducting a limited review of the Company’s prior year tax returns. The ATO is reviewing an internal reorganization executed in 2011 when Newmont completed a restructure of the shareholding in the Company’s Australian subsidiaries. To date, the Company has responded to inquiries from the ATO and provided them with supporting documentation for the transaction and the Company’s associated tax positions. One aspect of the ATO review relates to an Australian capital gains tax that applies to sales or transfers of stock in certain types of entities. In the fourth quarter of 2017, the ATO notified the Company that it believes the 2011 reorganization is subject to capital gains tax of approximately $85 (including interest and penalties). The Company disputes this conclusion and intends to vigorously defend its position that the transaction is not subject to this tax. In the fourth quarter of 2017, the Company made a $24 payment to the ATO and lodged an Appeal with the Australian Federal Court to preserve its right to contest the ATO conclusions on this matter. The Company reflects this payment as a receivable as it believes that it will ultimately prevail in this dispute. The Company continues to monitor the status of the ATO’s review which it expects to continue throughout 2022.
See Note 26 for a discussion on the audit settlement payments related to the Yanacocha Tax Dispute and Tax Reassessment from the Mexican Tax Authority.
The Company and/or subsidiaries file income tax returns in the U.S. federal jurisdiction, and various state and foreign jurisdictions. With few exceptions, the Company is no longer subject to U.S. Federal, state and local, and non-U.S. income tax examinations by tax authorities for years before 2015. As a result of (i) statute of limitations that will begin to expire within the next 12 months in various jurisdictions, and (ii) possible settlements of audit-related issues with taxing authorities in various jurisdictions, the Company believes that it is reasonably possible that the total amount of its unrecognized income tax liability will decrease between $110 and $160 in the next 12 months.
The Company’s practice is to recognize interest and/or penalties related to unrecognized tax benefits as part of Income and mining tax benefit (expense). At December 31, 2021 and 2020, the total amount of accrued income-tax-related interest and penalties included in the Consolidated Balance Sheets was $138 and $146, respectively. During 2021, 2020, and 2019 the Company released $8 and $20, and accrued $29 of interest and penalties, respectively, through the Consolidated Statements of Operations.
Other
No additional income taxes have been provided for any remaining undistributed foreign earnings not subject to the transition tax, or any additional outside basis difference inherent in these entities, as these amounts continue to be indefinitely reinvested in foreign operations.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
NOTE 13 EMPLOYEE-RELATED BENEFITS
At December 31,
20212020
Current:
Accrued payroll and withholding taxes $339 $334 
Peruvian workers’ participation and other bonuses1823
Other post-retirement benefit plans 66
Employee pension benefits 45
Accrued severance 24
Other employee-related payables 178
$386 $380 
Non-current:
Accrued severance$278 $252 
Other post-retirement benefit plans 7884
Employee pension benefits 45 126 
Other employee-related payables 3831
$439 $493 
Pension and Other Benefit Plans
The Company provides defined benefit pension plans to eligible employees. Benefits are generally based on years of service and the employee’s average annual compensation. Various international pension plans are based on local laws and requirements. Pension costs are determined annually by independent actuaries and pension contributions to the qualified plans are made based on funding standards established under the Employee Retirement Income Security Act of 1974, as amended.
The following tables provide a reconciliation of changes in the plans’ benefit obligations and assets’ fair values for 2021 and 2020:
Pension BenefitsOther Benefits
2021202020212020
Change in benefit obligation:
Benefit obligation at beginning of year$1,117 $1,267 $90 $86 
Service cost15 17 
Interest cost30 36 
Actuarial loss (gain)(32)105 (6)
Settlement payments(13)(267)— — 
Foreign currency exchange (gain) loss— — — 
Benefits paid(77)(42)(4)(4)
Projected benefit obligation at end of year$1,040 $1,117 $84 $90 
Accumulated benefit obligation$1,017 $1,095 $84 $90 
Change in fair value of assets:
Fair value of assets at beginning of year$986 $1,145 $— $— 
Actual return on plan assets77 106 — — 
Employer contributions41 43 
Foreign currency exchange (gain) loss— — — 
Settlement payments(13)(267)— — 
Benefits paid(77)(42)(4)(4)
Fair value of assets at end of year$1,014 $986 $— $— 
(Unfunded) funded status, net:$(26)$(131)$(84)$(90)
Amounts recognized in the Consolidated Balance Sheets:
Other non-current assets$23 $— $— $— 
Employee-related benefits, current(4)(5)(6)(6)
Employee-related benefits, non-current(45)(126)(78)(84)
Net amounts recognized$(26)$(131)$(84)$(90)
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
The Company’s qualified pension plans are funded with cash contributions in compliance with Internal Revenue Service rules and regulations. The Company’s non-qualified and other benefit plans are currently not funded, but exist as general corporate obligations. The information contained in the above tables presents the combined funded status of qualified and non-qualified plans. The Company reviews its retirement benefit programs on a regular basis and will consider market conditions and the funded status of its qualified pension plans in determining whether additional contributions are appropriate in calendar year 2022.
As of December 31, 2021, all pension benefit plans had accumulated benefit obligations in excess of the fair value of assets with the exception of one defined benefit pension plan in the U.S. and one defined benefit pension plan in Canada. The fair value of the plan assets associated with these pension benefit plans was in excess of the related accumulated benefit obligations. As of December 31, 2020, all pension benefit plans had accumulated benefit obligations in excess of the fair value of assets. The following table provides information for the Company's defined benefit pensions plans that had aggregate accumulated benefit obligations in excess of plan assets at December 31:
Pension Benefits (1)
20212020
Accumulated benefit obligation$43 $1,095 
Projected benefit obligation50 1,117 
Fair value of plan assets986 
____________________________
(1)Information for other benefit plans with an accumulated benefit obligations in excess of plan assets has not be included as all of the other benefit plans are unfunded.
The significant assumptions used in measuring the Company’s benefit obligation were mortality assumptions and discount rate.
The mortality assumptions used to measure the pension and other post retirement obligation incorporate future mortality improvements from tables published by the Society of Actuaries. The Company utilized the Pri-2012 mortality tables and the MP-2020 generational projection scale to measure the pension and other post retirement obligations as of December 31, 2020. In October 2021, the Society of Actuaries released a new generational projection scale, MP-2021. The Company utilized the Pri-2012 mortality tables and the MP-2021 generational projection scales to measure the pension and other post retirement obligations as of December 31, 2021.
Yield curves matching the Company’s benefit obligations were derived using a model based on high quality corporate bond data from Bloomberg. The model develops a discount rate by selecting a portfolio of high quality corporate bonds whose projected cash flows match the projected benefit payments of the plan. The resulting curves were used to identify a weighted average discount rate for the Company of 3.06% and 2.77% at December 31, 2021 and 2020, respectively, based on the timing of future benefit payments.
Actuarial losses (gains) of $(38) were recognized in the year ended December 31, 2021, primarily due to an increase in discount rate from the prior year. Actuarial losses (gains) of $109 were recognized in the year ended December 31, 2020, primarily due to a decrease in the discount rate from the prior year.
Settlement accounting is required when annual lump sum payments exceed the annual interest and service costs for a plan and results in a remeasurement of the related pension benefit obligation and plan assets and the recognition of settlement charges in Other income (loss), net due to the acceleration of a portion of unrecognized actuarial losses. The lump sum payments were made primarily from the plan assets resulting in a pension settlement charge of $4 and $92 for the year ended December 31, 2021 and 2020, respectively.
The following table provides the net pension and other benefits amounts recognized in Accumulated other comprehensive income (loss) at December 31:
Pension BenefitsOther Benefits
2021202020212020
Accumulated other comprehensive income (loss):
Net actuarial gain (loss)$(240)$(328)$11 $
Prior service credit17 24 
(223)(304)13 10 
Less: Income taxes46 59 (2)(2)
$(177)$(245)$11 $
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
The following table provides components of the Total benefit cost (credit), inclusive of the net periodic pension and other benefits costs (credits), for the years ended December 31:
Pension Benefit Costs (Credits)Other Benefit Costs (Credits)
202120202019202120202019
Pension benefit costs (credits), net (1);
Service cost $15 $17 $31 $$$
Interest cost 30 36 47 
Expected return on plan assets (59)(61)(66)— — — 
Amortization, net29 29 22 (2)(1)(8)
Net periodic benefit cost (credit)$15 $21 $34 $$$(3)
Settlement cost92 — — — — 
(Gain) loss on curtailment— — (10)— — (18)
Restructuring (benefit) loss— — — — — 
Total benefit cost (credit)$19 $113 $32 $$$(21)
____________________________
(1)Service costs are included in Costs applicable to sales or General and administrative and the other components of benefit costs are included in Other income (loss), net.
The following table provides the components recognized in Other comprehensive income (loss) for the years ended December 31:
Pension BenefitsOther Benefits
202120202019202120202019
Net loss (gain) (1)
$(48)$60 $$(5)$$
Amortization, net(29)(29)(22)
Accelerated prior service credit (cost) due to curtailment— — 12 — — 11 
Settlements(4)(92)— — — — 
Total recognized in other comprehensive income (loss)$(81)$(61)$(8)$(3)$$27 
Total benefit cost (credit) and other comprehensive income (loss)$(62)$52 $24 $(1)$$
____________________________
(1)Includes curtailment gain of $—, $— and $(13) for the years ended December 31, 2021, 2020 and 2019, respectively.
Actuarial losses in excess of 10 percent of the greater of the projected benefit obligation or market-related value of plan assets are amortized over the expected average remaining future service period of the current active participants.
The significant assumptions used in measuring the Company’s Total benefit cost (credit) and other comprehensive income (loss) were discount rate and expected return on plan assets:
Pension BenefitsOther Benefits
Years Ended December 31,Years Ended December 31,
202120202019202120202019
Weighted average assumptions used in measuring the net periodic benefit cost:
Discount rate 2.77 %3.49 %4.40 %2.70 %3.49 %4.40 %
Expected return on plan assets 6.75 %6.75 %6.75 %N/AN/AN/A
The expected long-term return on plan assets used for each period in the three years ended December 31, 2021 was determined based on an analysis of the asset returns over multiple time horizons for the Company’s actual plan and for other comparable U.S. corporations. At December 31, 2021, Newmont has estimated the expected long-term return on plan assets to be 6.75% which will be used in determining future net periodic benefit cost. The Company determines the long-term return on plan assets by considering the most recent capital market forecasts, the plans’ current asset allocation and the actual return on plan assets in comparison to the expected return on assets. The average actual return on plan assets during the 33 years ended December 31, 2021 approximated 8.48%.
Newmont has two pension calculations for salaried U.S. employees. The first is a “Final Average Pay” pension calculation which pays a monthly amount to employees in retirement based, in part, on their highest five year eligible earnings and years of credited service. The second is the “Stable Value” calculation which provides a lump sum payment to employees upon retirement. The
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
amount of the lump sum is the total of annual accruals based on the employee’s eligible earnings and years of service. The benefits accrued under the Final Average Pay formula were frozen on June 30, 2014 for those eligible employees. Beginning July 1, 2014, all future accruals are based on the terms and features of the Stable Value calculation.
The pension plans employ an independent investment firm which invests the assets of the plans in certain approved funds that correspond to specific asset classes with associated target allocations. The goal of the pension fund investment program is to achieve prudent actuarial funding ratios while maintaining acceptable risk levels. The investment performance of the plans and that of the individual investment firms is measured against recognized market indices. The performance of the pension funds are monitored by an investment committee comprised of members of the Company’s management, which is advised by an independent investment consultant. With the exception of global capital market economic risks, the Company has identified no significant portfolio risks associated to asset classes. The following is a summary of the target asset allocations for 2021 and the actual asset allocation at December 31, 2021.
Asset AllocationTargetActual at December 31,
2021
U.S. equity investments 11 %12 %
International equity investments 12 %12 %
World equity fund (U.S. and International equity investments)20 %20 %
High yield fixed income investments%%
Fixed income investments 45 %43 %
Cash equivalents— %— %
Other%%
The following table sets forth the Company’s pension plan assets measured at fair value at December 31, 2021 and 2020:
Fair Value at December 31,
20212020
Cash and cash equivalents $$
Commingled funds 1,010 981 
$1,014 $986 
Cash and cash equivalent instruments are valued based on quoted market prices in active markets, which are primarily invested in money market securities and U.S. Treasury securities.
The pension plans’ commingled fund investments are managed by several fund managers and are valued at the net asset value per share for each fund. Although the majority of the underlying assets in the funds consist of actively traded equity securities and bonds, the unit of account is considered to be at the fund level. These funds require less than a month’s notice for redemptions and can be redeemed at the net asset value per share.
The assumed health care trend rate used to measure the expected cost of benefits is 6.00% in 2022 and 2023 and decreases gradually each year to 5.00% in 2027, which is used thereafter.
Cash Flows
Benefit payments expected to be paid to pension plan participants are as follows: $61 in 2022, $62 in 2023, $63 in 2024, $61 in 2025, $63 in 2026 and $313 in total over the five years from 2027 through 2031. Benefit payments made to other benefit plan participants are expected to be as follows: $6 in 2022, $6 in 2023, $6 in 2024, $6 in 2025, $6 in 2026 and $27 in total over the five years from 2027 through 2031.
Savings Plans
The Company has one qualified defined contribution savings plan in the U.S. that covers salaried and non-union hourly employees. When an employee meets eligibility requirements, the Company matches 100% of employee contributions of up to 6% of eligible earnings. Hourly non-union employees receive an additional retirement contribution to the participant’s retirement contribution account equal to an amount which is paid and determined by the Company. Currently, the additional retirement contribution is 5% of eligible earnings. Matching contributions are made in cash. In addition, the Company has one non-qualified supplemental savings plan for executive-level employees whose benefits under the qualified plan are limited by federal regulations.
NOTE 14 STOCK-BASED COMPENSATION
The Company has stock incentive plans for directors, executives and eligible employees. Stock incentive awards include restricted stock units (“RSUs”) and performance leveraged stock units (“PSUs”). The Company issues new shares of common stock to
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
satisfy option exercises and vesting under all of its stock incentive awards. Prior to 2012, the Company also granted options to purchase shares of stock with exercise prices not less than fair market value of the underlying stock at the date of grant. At December 31, 2021, 22,796,541 shares were authorized for future stock incentive plan awards.
Restricted Stock Units
The Company grants RSUs to directors, executives and eligible employees. Awards are determined as a target percentage of base salary and, for eligible employees, are subject to a personal performance factor. For all RSU grants issued prior to February 2018, RSU awards vest on a straight-line basis over periods of three years or more, unless the employee becomes retirement eligible prior to the vesting date. If an employee becomes retirement eligible and retires prior to the vesting date, the remaining awards vest on a pro rata basis at the retirement date. Starting with the February 2018 grant, if the employee becomes retirement eligible at any point during the vesting period, the entire award is considered earned after the later of the one year service period from the grant date or the retirement eligible date. Prior to vesting, holders of RSUs do not have the right to vote the underlying shares; however, directors, executives and eligible employees accrue dividend equivalents on their RSUs, which are paid at the time the RSUs vest. The accrued dividend equivalents are not paid if RSUs are forfeited. The RSUs are subject to forfeiture risk and other restrictions. Upon vesting, the employee is entitled to receive one share of the Company’s common stock for each restricted stock unit.
Performance Stock Units
The Company grants PSUs to eligible executives that vest after a three year performance period based on the Company's total shareholder return compared to the return of a peer group. The grant date fair value of the awards are amortized on a straight-line basis over the required performance period.
The grant date fair value of the market conditions for each PSU granted in 2021, 2020 or 2019 was determined using a Monte Carlo valuation model, which requires the input of the following subjective assumptions:
Year Ended December 31,
202120202019
Risk-free interest rate0.22%1.21%2.46%
Volatility range
31.41% - 76.72%
24.71% - 43.91%
33.50% - 58.40%
Weighted-average volatility53.05%35.38%44.49%
Expected term (years)333
Weighted-average fair market value$65.41$59.24$41.14
The risk-free interest rates are based on a U.S. Treasury yield curve in effect at the time of grant. Expected volatility is based on historical volatility of the Company's stock as well as the stock of the peer group for the three-year performance period.
Employee Stock Options
Stock options granted under the Company’s stock incentive plans vest over periods of three years or more and are exercisable over a period of time not to exceed 10 years from the grant date. The value of each option award is estimated at the grant date using the Black-Scholes option pricing model. There were no options granted in 2021, 2020 or 2019. At December 31, 2020, there were 48,956 options outstanding and exercisable with a weighted average exercise price of $59.64. During 2021, 44,006 options were exercised and 4,950 options expired with weighted average exercise prices of $59.75 and $58.69, respectively. At December 31, 2021, there were no options outstanding and exercisable.
Goldcorp Options
In connection with the Newmont Goldcorp transaction, the Company exchanged 3.6 million outstanding Goldcorp options (“Goldcorp options”) for 1.2 million Newmont options with the right to exercise each Newmont option for one share of Newmont common stock. At December 31, 2020, there were 558,749 options outstanding and exercisable with a weighted average exercise price of $58.64. During 2021, 244,894 options were exercised with a weighted average exercise price of $61.24. No options expired in 2021. At December 31, 2021, there were 313,855 options outstanding and exercisable, at a weighted average exercise price of $56.61 and a weighted average remaining contractual life of 0.6 years.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Stock-Based Compensation Activity
A summary of the status and activity of non-vested RSUs and PSUs for the year ended December 31, 2021 is as follows:
RSUPSU
Number of UnitsWeighted Average Grant-Date Fair ValueNumber of UnitsWeighted Average Grant-Date Fair Value
Non-vested at beginning of year2,173,371$42.22 1,387,281$49.16 
Granted982,952$57.60 437,481$63.68 
Vested(1,177,826)$40.08 (364,975)$44.00 
Forfeited(186,503)$51.86 (115,834)$56.26 
Non-vested at end of year1,791,994$51.06 1,343,953$55.91 
The total intrinsic value and fair value of RSUs that vested in 2021, 2020 and 2019 was $72, $81 and $60, respectively. The total intrinsic value and fair value of PSUs that vested in 2021, 2020 and 2019 was $21, $42 and $71, respectively.
Cash flows resulting from excess tax benefits are classified as part of cash flows from operating activities. Excess tax benefits are realized tax benefits from tax deductions for vested RSUs, settled PSUs, and exercised options in excess of the deferred tax asset attributable to stock compensation costs for such equity awards. The Company recorded $3, $1 and $3 in excess tax benefits for the years ended December 31, 2021, 2020 and 2019, respectively.
At December 31, 2021, there was $47 and $33 of unrecognized compensation costs related to the unvested RSUs and PSUs, respectively. This cost is expected to be recognized over a weighted average period of approximately 2 years.
The Company recognized stock-based compensation as follows:
Year Ended December 31,
202120202019
Stock-based compensation:
Restricted stock units$47 $51 $68 
Performance leveraged stock units25 21 29 
Other (1)
— 12 24 
$72 $84 $121 
____________________________
(1)Other includes Goldcorp phantom restricted share units and Goldcorp performance share units. These awards have a cash settlement provision. The Company recognizes the liability and expense for these awards ratably over the requisite service period giving effect to the adjusted fair value at the end of each reporting period.
NOTE 15 FAIR VALUE ACCOUNTING
Fair value accounting establishes a fair value hierarchy that prioritizes the inputs to valuation techniques used to measure fair value. The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). The three levels of the fair value hierarchy are described below:
Level 1    Unadjusted quoted prices in active markets that are accessible at the measurement date for identical, unrestricted assets or liabilities;
Level 2    Quoted prices in markets that are not active, quoted prices for similar assets or liabilities in active markets, quoted prices or inputs that are observable, either directly or indirectly, for substantially the full term of the asset or liability and model-based valuation techniques (e.g. the Black-Scholes model) for which all significant inputs are observable in the market or can be corroborated by observable market data for substantially the full term of the assets or liabilities; and
Level 3    Prices or valuation techniques that require inputs that are both significant to the fair value measurement and unobservable (supported by little or no market activity).
The following tables set forth the Company’s assets and liabilities measured at fair value on a recurring (at least annually) and nonrecurring basis by level within the fair value hierarchy. As required by accounting guidance, assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Fair Value at December 31, 2021
TotalLevel 1Level 2Level 3
Assets:
Cash and cash equivalents $4,992 $4,992 $— $— 
Restricted cash101 101 — — 
Trade receivable from provisional concentrate sales, net 297 — 297 — 
Assets held for sale (Note 8)
68 — 68 — 
Marketable and other equity securities (Note 16) (1)
397 318 17 62 
Restricted marketable debt securities (Note 16)
35 28 — 
Restricted other assets (Note 16)
16 16 — — 
Contingent consideration assets171 — — 171 
$6,077 $5,455 $389 $233 
Liabilities:
Debt (2)
$6,712 $— $6,712 $— 
Contingent consideration liabilities— — 
Other— — 
$6,723 $— $6,718 $
Fair Value at December 31, 2020
TotalLevel 1Level 2Level 3
Assets:
Cash and cash equivalents$5,540 $5,540 $— $— 
Restricted cash108 108 — — 
Trade receivable from provisional concentrate sales, net 
379 — 379 — 
Marketable and other equity securities (Note 16) (1)
682 604 25 53 
Restricted marketable debt securities (Note 16)
38 24 14 — 
Contingent consideration assets119 — — 119 
$6,866 $6,276 $418 $172 
Liabilities:
Debt (2)
$7,586 $— $7,586 $— 
Other11 — 11 — 
$7,597 $— $7,597 $— 
____________________________
(1)Marketable and other equity securities classified as Level 2 includes warrants reported in the Maverix equity method investment balance of $8 and $14 at December 31, 2021 and December 31, 2020, respectively.
(2)Debt is carried at amortized cost. The outstanding carrying value was $5,652 and $6,031 at December 31, 2021 and December 31, 2020, respectively. The fair value measurement of debt was based on an independent third-party pricing source.
The fair values of the derivative instruments in the table above are presented on a net basis. The gross amounts related to the fair value of the derivative instruments above are immaterial. All other fair value disclosures in the above table are presented on a gross basis.
The Company’s cash and cash equivalents and restricted cash (which includes restricted cash and cash equivalents) are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices in active markets and are primarily money market securities and U.S. Treasury securities.
The Company’s net trade receivables from provisional metal concentrate sales, which contain an embedded derivative and are subject to final pricing, are valued using quoted market prices based on forward curves for the particular metal. As the contracts themselves are not traded on an exchange, these receivables are classified within Level 2 of the fair value hierarchy.
The Company's assets held for sale consist of the Conga mill assets to be sold under a binding agreement entered into during the third quarter of 2021. The assets were measured to fair value based on the negotiated sale price of $68 less costs to sell. The assets are classified as non-recurring within Level 2 of the fair value hierarchy. Refer to Note 8 for further information.
The Company’s marketable and other equity securities with readily determinable fair values are valued using quoted market prices in active markets and as such are classified within Level 1 of the fair value hierarchy. The fair value of the marketable equity
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
securities are calculated as the quoted market price of the marketable equity security multiplied by the quantity of shares held by the Company.
The Company’s marketable and other equity securities without readily determinable fair values primarily consists of the Company’s ownership in MARA and warrants in publicly traded companies. The ownership in MARA is accounted for under the measurement alternative and is classified as a non-recurring Level 3 investment within the fair value hierarchy. Warrants are valued using a Black-Scholes model using quoted market prices in active markets of the underlying securities. As the warrants themselves are not traded on the exchange, these equity securities are classified within Level 2 of the fair value hierarchy.
The Company’s restricted marketable debt securities are primarily U.S. government issued bonds and international bonds. The Company’s South American debt securities are classified within Level 1 of the fair value hierarchy, using published market prices of actively traded securities. The Company’s North American debt securities are classified within Level 1 and Level 2 of the fair value hierarchy. The Level 1 debt securities are valued using published market prices of actively traded securities and the Level 2 debt securities are valued using pricing models which are based on published market inputs for similar, actively traded securities.
The Company's restricted other assets are primarily money market securities with a term longer than three months which are valued using quoted market prices in active markets. As such, they are classified within Level 1 of the fair value hierarchy.
The estimated fair value of the contingent consideration assets and liabilities are determined using discounted cash flow models. The contingent consideration assets and liabilities consist of financial instruments that meet the definition of a derivative, but are not designated for hedge accounting under ASC 815. The assets and liabilities are classified within Level 3 of the fair value hierarchy. Increases in the discount rate will result in a decrease in the estimated fair value of the contingent consideration assets and liabilities.
The following tables set forth a summary of the quantitative and qualitative information related to the significant observable and unobservable inputs used in the calculation of the Company’s Level 3 financial assets and liabilities at December 31, 2021 and December 31, 2020:
DescriptionAt December 31, 2021Valuation techniqueSignificant inputRange, point estimate or average
Equity securities$62 Discounted cash flowDiscount rate9.50%
Long-term gold price$1,500
Long-term copper price$3.00
Contingent consideration assets$171 Discounted cash flow
Discount rate (1)
4.48 - 5.88
%
Contingent consideration liabilities$Discounted cash flow
Discount rate (1)
2.48 - 3.35
%
____________________________
(1)The weighted average discount rates used to calculate the Company’s contingent consideration assets and liabilities are 5.63% and 2.83%, respectively. Various other inputs including, but not limited to, metal prices and production profiles were considered in determining the fair value of the individual contingent consideration assets.
DescriptionAt December 31, 2020Valuation techniqueSignificant inputRange, point estimate or average
Marketable and other equity securities$53 Discounted cash flowDiscount rate9.50%
Long-term gold price$1,500
Long-term copper price$3.00
Contingent consideration assets$119 Discounted cash flow
Discount rate (1)
4.53 - 9.19
%
____________________________
(1)The weighted average discount rate used to calculate the Company’s contingent consideration assets is 7.63%. Various other inputs including, but not limited to, metal prices, production profiles and new mineralization discoveries were considered in determining the fair value of the individual contingent consideration assets.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
The following tables set forth a summary of changes in the fair value of the Company’s recurring Level 3 financial assets and liabilities:
Continental convertible debt(1)
Contingent consideration assets(2)
Total assetsHolt royalty obligationContingent consideration liabilitiesTotal liabilities
Fair value at December 31, 2019$39 $38 $77 $257 $— $257 
Additions and settlements— 39 39 (8)— (8)
Revaluation42 43 (249)— (249)
Sales(40)$— (40)$— $— $— 
Fair value at December 31, 2020$— $119 $119 $— $— $— 
Additions and settlements— — — — — — 
Revaluation— 52 52 — 
Fair value at December 31, 2021$— $171 $171 $— $$
____________________________
(1)In March 2020, the Company completed the sale of its interest in Continental, which included an unrestricted convertible debenture. The gain recognized on the revaluation completed prior to the sale is included in Other comprehensive income (loss). The gain recognized on sale is included in Gain on asset and investment sales, net.
(2)In 2020, additions of $39 relate to contingent consideration assets received from the sale of Red Lake. See Note 10 for additional information. The gain (loss) recognized on revaluation in 2021 of $3 and $49 are included in Other income (loss), net and Net income (loss) from discontinued operations, respectively.
NOTE 16 INVESTMENTS
At December 31,
20212020
Current: 
Marketable equity securities$82 $290 
Non-current: 
Marketable and other equity securities$307 $378 
Equity method investments: 
Pueblo Viejo Mine (40.0%)
$1,320 $1,202 
NuevaUnión Project (50.0%)
950 949 
Norte Abierto Project (50.0%)
505 493 
Maverix Metals Inc. (28.6%)
160 160 
TMAC Resources, Inc. (—%)
— 13 
Other
2,936 2,819 
$3,243 $3,197 
Non-current restricted investments: (1)
Marketable debt securities$35 $38 
Other assets16 — 
$51 $38 
____________________________
(1)Non-current restricted investments are legally pledged for purposes of settling reclamation and remediation obligations and are included in Other non-current assets. For further information regarding these amounts, see Note 6.
Equity Method Investments
Income (loss) from the Company's equity method investments is recognized in Equity income (loss) of affiliates, which for the years ended 2021, 2020 and 2019 primarily consists of income of $166, $193 and $124, respectively, from the Pueblo Viejo mine.
See below for further information on the Company's equity method investments.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Pueblo Viejo
The Pueblo Viejo mine is located in the Dominican Republic and commenced operations in September 2014. Barrick operates and holds the remaining interest in the mine. At acquisition, the carrying value of Newmont’s equity investment in Pueblo Viejo was lower than the underlying net assets of its investment resulting in a basis difference, which is being amortized into Equity income (loss) of affiliates over the remaining estimated useful life of the mine. As of December 31, 2021 the net basis difference was $277.
In June 2009, Goldcorp entered into a $400 shareholder loan agreement with Pueblo Viejo with a term of fifteen years. In April 2012, additional funding of $300 was issued to Pueblo Viejo with a term of twelve years. Both loans bear interest at 95% of LIBOR plus 2.95% which is compounded semi-annually in arrears on February 28 and August 31 of each year. The loans have no set repayment terms.
In November 2020, the Company and Barrick entered into an agreement with Pueblo Viejo to provide additional funding of up to $1,300 ($520 attributable to Newmont's 40% ownership interest) through a loan facility for the expansion of Pueblo Viejo's operations (“Loan Facility”). Under the terms of the agreement, the Company and Barrick will distribute funds based on their respective proportionate ownership interest in Pueblo Viejo. The Loan Facility bears interest at 95% of LIBOR plus 4.00% which is compounded semi-annually in arrears on February 28 and August 31 of each year. The Loan Facility will be provided in two tranches of $800 and $500, respectively. Unused proceeds under the first tranche will be available for use under the second tranche. The tranches mature February 28, 2032 and February 28, 2035, respectively.

As of December 31, 2021 and December 31, 2020, the Company had outstanding shareholder loans to Pueblo Viejo of $260 and $244, with accrued interest of $3 and $4, respectively, related to the Loan Facility and the existing shareholder loan facilities acquired in the Newmont Goldcorp transaction. All loans receivable and accrued interest are included in the Pueblo Viejo equity method investment balance.

In September 2019, the Company and Barrick entered into a $70 revolving loan facility (“Revolving Facility”) to provide short-term financing to Pueblo Viejo. The Company will fund 40% of the borrowings based on its ownership interest in Pueblo Viejo. Under the terms of the Revolving Facility, borrowings earn interest at LIBOR plus 2.09% and expires on December 31, 2022. There were no borrowings outstanding under the Revolving Facility as of December 31, 2021 and December 31, 2020.
The Company purchases its portion (40.0%) of gold and silver produced from Pueblo Viejo at market price and resells those ounces to third parties. Total payments made to Pueblo Viejo for gold and silver purchased were $616 and $660 for the years ended December 31, 2021 and December 31, 2020, respectively. These purchases, net of subsequent sales, were included in Other income (loss), net and the net amount is immaterial. There were no amounts due to or due from Pueblo Viejo for gold and silver purchases as of December 31, 2021 or December 31, 2020.
NuevaUnión
The NuevaUnión project is located in Chile and is currently under development. The project is jointly managed by Newmont and Teck Resources, who holds the remaining interest. At acquisition, the carrying value of Newmont’s equity investment in NuevaUnión was lower than the underlying net assets of its investment resulting in a basis difference. This basis difference will be amortized into Equity income (loss) of affiliates over the remaining estimated useful life of the mine beginning when commercial production is declared. As of December 31, 2021 the net basis difference was $67.
Norte Abierto
The Norte Abierto project is located in Chile and is currently under development. The project is jointly managed by Newmont and Barrick, who holds the remaining interest. As part of the Newmont Goldcorp transaction, Newmont assumed deferred payments to Barrick to be satisfied through funding a portion of Barrick’s share of project expenditures at the Norte Abierto project. At December 31, 2021, there were $22 and $102 of deferred payments included in Other current liabilities and Other non-current liabilities on the Consolidated Balance Sheet, respectively. At December 31, 2020, there were $33 and $123 of deferred payments included in Other current liabilities and Other non-current liabilities on the Consolidated Balance Sheet, respectively.
At December 31, 2021 the carrying value of Newmont’s equity investment in Norte Abierto was lower than the underlying net assets of its investment by $209. This basis difference will be amortized into Equity income (loss) of affiliates over the remaining estimated useful life of the mine beginning when commercial production is declared.
Maverix Metals, Inc.
In October 2020, Newmont acquired an additional 12 million common share units in Maverix as part consideration from the sale of certain royalty interests resulting in an increase in ownership in Maverix. As of December 31, 2021, Newmont holds 28.6% equity ownership in Maverix. Refer to Note 10 for additional information.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
TMAC Resources, Inc.
During the first quarter of 2021, TMAC sold all of the company’s outstanding shares of TMAC to Agnico Eagle Mines Ltd ("Agnico") for cash consideration of $55. The carrying value of our investment in TMAC was $13 resulting in a gain of $42 recognized in Gain on asset and investment sales, net.
NOTE 17     INVENTORIES
At December 31,
20212020
Materials and supplies$669 $673 
In-process132 148 
Concentrate (1)
58 39 
Precious metals (2)
71 103 
$930 $963 
____________________________
(1)Concentrate includes gold, copper, silver, lead and zinc.
(2)Precious metals includes gold and silver doré.
NOTE 18     STOCKPILES AND ORE ON LEACH PADS
At December 31,
20212020
Current:
Stockpiles$491 $514 
Ore on leach pads366 313 
$857 $827 
Non-current:
Stockpiles$1,442 $1,446 
Ore on leach pads333 259 
$1,775 $1,705 
Total:
Stockpiles$1,933 $1,960 
Ore on leach pads699 572 
$2,632 $2,532 
In 2021, the Company recorded write-downs of $45 and $19, classified as components of Costs applicable to sales and Depreciation and amortization, respectively, to reduce the carrying value of stockpiles and ore on leach pads to net realizable value. Of the write-downs in 2021, $25 was related to Yanacocha, $21 to CC&V and $18 to NGM.
In 2020, the Company recorded write-downs of $42 and $22, classified as components of Costs applicable to sales and Depreciation and amortization, respectively, to reduce the carrying value of stockpiles and ore on leach pads to net realizable value. Of the write-downs in 2020, $24 was related to Yanacocha and $40 to NGM.
In 2019, the Company recorded write-downs of $112 and $45, classified as components of Costs applicable to sales and Depreciation and amortization, respectively, to reduce the carrying value of stockpiles and ore on leach pads to net realizable value. Of the write-downs in 2019, $15 is related to CC&V, $21 to Yanacocha, $22 to Boddington, $34 to Akyem, $18 to NGM, $44 to Carlin and $3 to Twin Creeks. In July 2019, Carlin and Twin Creeks were contributed to NGM. See Note 1 for additional information.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
NOTE 19     PROPERTY, PLANT AND MINE DEVELOPMENT
Depreciable
Life
(in years)
At December 31, 2021At December 31, 2020
CostAccumulated
Depreciation
Net Book
Value
CostAccumulated
Depreciation
Net Book
Value
Land $260 $— $260 $259 $— $259 
Facilities and equipment (1)
1-23
18,829 (10,487)8,342 18,346 (9,628)8,718 
Mine development 
1-23
5,419 (3,133)2,286 4,429 (2,608)1,821 
Mineral interests 
1-23
13,296 (2,369)10,927 12,673 (1,664)11,009 
Construction-in-progress 2,309 — 2,309 2,474 — 2,474 
$40,113 $(15,989)$24,124 $38,181 $(13,900)$24,281 
____________________________
(1)At December 31, 2021 and 2020, Facilities and equipment include finance lease right of use assets of $619 and $666, respectively.
Depreciable
Life
(in years)
At December 31, 2021At December 31, 2020
Mineral InterestsCostAccumulated
Depreciation
Net Book
Value
CostAccumulated
Depreciation
Net Book
Value
Production stage 
1-23
$8,712 $(2,369)$6,343 $8,324 $(1,664)$6,660 
Development stage 
(1)
1,000 — 1,000 1,106 — 1,106 
Exploration stage 
(1)
3,584 — 3,584 3,243 — 3,243 
$13,296 $(2,369)$10,927 $12,673 $(1,664)$11,009 
____________________________
(1)These amounts are currently non-depreciable as these mineral interests have not reached production stage.
Construction-in-progress at December 31, 2021 of $2,309 included $231 at North America primarily related to construction at Peñasquito and Porcupine, $964 at South America primarily related to engineering and construction at Conga and infrastructure at Yanacocha, $488 at Australia primarily related to Tanami Expansion 2 project and other infrastructure at Boddington, $447 at Africa primarily related to the Ahafo North project and other infrastructure at Ahafo and Akyem and $138 at Nevada primarily related to infrastructure at NGM. There have been no new costs capitalized during 2021 or 2020 for the Conga project in South America, reported in Other South America. In the third quarter of 2021, the Company reclassified the Conga mill assets, previously included within construction-in-progress with a carrying value of $593, as held for sale, included in Other current assets on our Consolidated Balance Sheet as of December 31, 2021. Refer to Note 8 for further information.
Construction-in-progress at December 31, 2020 of $2,474 included $212 at North America primarily related to construction at Peñasquito and CC&V, $1,476 at South America primarily related to engineering and construction at Conga and infrastructure at Yanacocha, Argentina and Suriname, $365 at Australia primarily related to Tanami Expansion 2 project and other infrastructure at Boddington, $275 at Africa primarily related to the Ahafo North project and other infrastructure at Ahafo and Akyem and $123 at Nevada primarily related to infrastructure at NGM.
NOTE 20     GOODWILL
Changes in the carrying amount of goodwill by reportable segment were as follows:
North AmericaSouth AmericaAustraliaNevadaTotal
Balance at December 31, 2019$1,964 $442 $— $268 $2,674 
Additions due to Newmont Goldcorp transaction (1)
80 17 — — 97 
Balance at December 31, 2020$2,044 $459 $— $268 $2,771 
Balance at December 31, 2021$2,044 $459 $— $268 $2,771 
____________________________
(1)For further information regarding the Newmont Goldcorp transaction, refer to Note 3.
The Company completed its annual goodwill impairment testing at December 31, 2021 and concluded that fair value exceeded carrying value for all reporting units. The estimated cash flows used to assess the fair value of each reporting unit were derived from the Company’s current business plans, which are developed using short-term price forecasts reflective of the current price environment and management’s projections for long-term average metal prices. In addition to short and long-term metal price assumptions, other assumptions include estimates of commodity-based and other input costs; capital investment; proven and probable mineral reserve and measured, indicated, and inferred resource estimates, including the timing and cost to develop and produce the reserves; value beyond proven and probable mineral reserve and measured, indicated and inferred resource estimates; estimated future closure costs; and the use of appropriate discount rates.
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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Examples of events or circumstances that could reasonably be expected to negatively affect the underlying key assumptions and ultimately impact the estimated fair value of our reporting units include, but are not limited to, such items as: (i) a decrease in forecasted production levels if we are unable to realize the mineable reserves, resources and exploration potential at our mining properties and extend the life of mine (ii) increased production or capital costs (iii) adverse changes in macroeconomic conditions including the market price of metals and changes in the equity and debt markets or country specific factors which could result in higher discount rates, (iv) significant unfavorable changes in tax rates including increased corporate income or mining tax rates, and (v) negative changes in regulation, legislation, and political environments which could impact our ability to operate in the future. While historical performance and current expectations have resulted in fair values of our reporting units equal to or in excess of carrying values, if our assumptions are not realized, it is possible that an impairment charge may need to be recorded in the future.

NOTE 21     DEBT
At December 31, 2021At December 31, 2020
CurrentNon-Current
Fair Value (1)
CurrentNon-Current
Fair Value (1)
$550 3.625% Senior Notes due June 2021
$— $— $— $551 $— $556 
$1,500 3.50% Senior Notes due March 2022
— — — — 491 512 
$1,000 3.70% Senior Notes due March 2023
87 — 90 — 418 441 
$700 2.80% Senior Notes due October 2029
— 689 726 — 689 770 
$1,000 2.25% Senior Notes due October 2030
— 985 994 — 984 1,060 
$1,000 2.60% Senior Notes due July 2032
— 990 1,003 — — — 
$600 5.875% Senior Notes due April 2035
— 578 790 — 576 886 
$1,100 6.25% Senior Notes due October 2039
— 860 1,237 — 859 1,344 
$1,000 4.875% Senior Notes due March 2042
— 986 1,270 — 985 1,375 
$450 5.45% Senior Notes due June 2044
— 482 602 — 482 642 
Debt issuance costs on Corporate Revolving Credit Facilities— (5)— — (4)— 
$87 $5,565 $6,712 $551 $5,480 $7,586 
____________________________
(1)The estimated fair value of these Senior Notes was determined by an independent third party pricing source and may or may not reflect the actual trading value of this debt.
All outstanding Senior Notes are unsecured and rank equally with one another.
Scheduled minimum debt repayments are as follows:
Year Ending December 31,
2022$— 
202387 
2024— 
2025— 
2026— 
Thereafter5,624 
$5,711 
Corporate Revolving Credit Facilities and Letters of Credit Facilities
In March 2021, the Company entered into an agreement to amend (the “Amendment”) certain terms of the existing $3,000 revolving credit agreement dated April 4, 2019 (the “Existing Credit Agreement”). The Existing Credit Agreement was entered into with a syndicate of financial institutions and provided for borrowings in U.S. dollars and contained a letter of credit sub-facility. Per the Amendment, the expiration date of the credit facility was extended from April 4, 2024 to March 30, 2026 and the interest rate on the credit facility was amended to include a margin adjustment based on the Company’s environment, social and governance (“ESG”) scores. The maximum adjustment resulting from the ESG scores is plus or minus 0.05%. Facility fees vary based on the credit ratings of the Company’s senior, uncollateralized, non-current debt. Debt covenants under the amendment are substantially the same as the Existing Credit Agreement. At December 31, 2021, the Company had no borrowings outstanding under the facility. There was $— and $72 outstanding on the letters of credit sub-facility at December 31, 2021 and 2020, respectively.
The Company had a $175 committed letter of credit facility that terminated in September 2020 and was replaced with a new $175 uncommitted letter of credit facility. The uncommitted letter of credit facility was entered into with BNP Paribas, New York Branch, to support reclamation obligations and is extended on a month-to-month basis. The Company had letters of credit outstanding in the amount of $100 at December 31, 2021 and 2020. None of these letters of credit have been drawn on for reclamation obligations as of December 31, 2021.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)

Prior to the closing of the Newmont Goldcorp transaction, Goldcorp held a series of letters of credit with various institutions, several of which represented guarantees for reclamation obligations. Newmont continues to hold these letters of credit. At December 31, 2021, the Company had letters of credit outstanding in the amount of $354 of which $323 represented guarantees for reclamation obligations. At December 31, 2020, the Company had letters of credit outstanding in the amount of $326 of which $286 represented guarantees for reclamation obligations. None of these letters of credit have been drawn on for reclamation obligations as of December 31, 2021.
2021, 2023 and 2044 Senior Notes
Subsequent to closing of the Newmont Goldcorp transaction, the Company completed a like-for-like exchange for the majority of the outstanding notes issued by Goldcorp (“Existing Goldcorp notes”), with an aggregate principal amount of $2,000, for new notes issued by Newmont (the “New Newmont notes”) and nominal cash consideration. The New Newmont notes, issued on April 22, 2019, and the Existing Goldcorp notes that were not tendered for exchange, consisted of $472 and $78 of 3.625% notes due June 9, 2021, $810 and $190 of 3.70% notes due March 15, 2023 and $444 and $6 of 5.45% notes due June 9, 2044, respectively. Pursuant to registration rights issued with the New Newmont notes, the Company filed Form S-4 on June 28, 2019, which was declared effective on July 9, 2019. The exchange for the registered notes was completed on August 9, 2019. In 2020, the Company purchased approximately $487 and $99 of its 2023 Newmont Senior Notes and 2023 Goldcorp Senior Notes, respectively, through debt tender offers. In April 2021, the Company fully redeemed all of the outstanding 2021 Senior Notes. The redemption price of $557 equaled the principal amount of the outstanding 2021 Senior Notes of $550 plus accrued and unpaid interest in accordance with the terms of the 2021 Notes. Interest on the 2021 Notes ceased to accrue on the date of redemption. In December 2021, the Company purchased approximately $89 and $4 of its 2023 Newmont Senior Notes and 2023 Goldcorp Senior Notes, respectively, through debt tender offers. The tender offers were completed with the proceeds from the issuance of the 2032 Senior Notes. See below for additional information on the 2032 Senior Notes. In December 2021, subsequent to the debt tender offer, the Company extinguished the outstanding 2023 Newmont Senior Notes by way of defeasance with funds in trust, which were subsequently used by the trust for full redemption in January 2022. The redemption price of $246 equaled the principal amount of the outstanding 2023 Newmont Senior Notes of $234 plus accrued and unpaid interest and future coupon payments in accordance with the terms of the 2023 Newmont Senior Notes.
In January 2022, the Company fully redeemed all of the outstanding 2023 Goldcorp Senior Notes. The redemption price of $90 equaled the principal amount of the outstanding 2023 Goldcorp Senior Notes of $87 plus accrued and unpaid interest and future coupon payments in accordance with the terms of the 2023 Goldcorp Senior Notes.
2022 and 2042 Senior Notes
In March 2012, the Company completed a two part public offering of $1,500 and $1,000 uncollateralized Senior Notes maturing on March 15, 2022 and March 15, 2042, respectively. Net proceeds from the 2022 and 2042 Senior Notes were $1,479 and $983, respectively. The 2022 Senior Notes paid interest semi-annually at a rate of 3.50% per annum and the 2042 Senior Notes pay semi-annual interest of 4.875% per annum. In November 2016, the Company purchased approximately $508 of its 2022 Senior Notes through a debt tender offer. In 2020, the Company purchased approximately $500 of its 2022 Senior Notes through debt tender offers. In December 2021, the Company fully redeemed all of the outstanding 2022 Senior Notes. The redemption price of $496 equaled the principal amount of the outstanding 2022 Senior Notes of $492 plus accrued and unpaid interest in accordance with the terms of the 2022 Notes.
2029 Senior Notes
In September 2019, the Company completed a public offering of $700 unsecured Senior Notes due October 1, 2029 (“2029 Senior Notes”). Net proceeds from the 2029 Senior Notes were $690. The 2029 Senior Notes pay interest semi-annually at a rate of 2.80% per annum.
2030 Senior Notes
In March 2020, the Company completed a public offering of $1,000 unsecured Senior Notes due October 1, 2030 (“2030 Senior Notes”). Net proceeds from the 2030 Senior Notes were $985. The 2030 Senior Notes pay interest semi-annually at a rate of 2.25% per annum. The proceeds from this issuance, supplemented with cash from the Company's balance sheet, were used to fund the debt tender offers of the 2023 Newmont Senior Notes and the 2023 Goldcorp Senior Notes in 2020.
2032 Senior Notes
In December 2021, the Company completed a public offering of $1,000 sustainability-linked, unsecured convertible Senior Notes due July 15, 2032 ("2032 Senior Notes") for net proceeds of approximately $992. Per the terms of the 2032 Senior Notes, the 2032 Senior Notes pay interest semi-annually at a rate of 2.60% per annum and are subject to an increase if the Company fails to reach stated targets by 2030. Beginning in 2031, the coupon of the 2032 Senior Notes is linked to the Company’s performance against the 2030 emissions reduction targets and the representation of women in senior leadership roles targets. The maximum adjustment resulting from the sustainability-linked objectives is 0.60%. The proceeds from this issuance were used to redeem the remaining balance of the 2023 Newmont Senior Notes and the 2023 Goldcorp Senior Notes in December 2021 and January 2022, respectively.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
2035 Senior Notes
In March 2005, Newmont issued uncollateralized Senior Notes with a principal amount of $600 due April 1, 2035 bearing an annual interest rate of 5.875%.
2039 Senior Notes
In September 2009, the Company completed a public offering of $1,100 uncollateralized Senior Notes maturing on October 1, 2039. Net proceeds from the 2039 Senior Notes were $1,080 and pay semi-annual interest of 6.25% per annum. In March 2016, the Company purchased approximately $226 of its 2039 Senior Notes through a debt tender offer.
Debt Covenants
The Company’s senior notes and revolving credit facility contain various covenants and default provisions including payment defaults, limitation on liens, leases, sales and leaseback agreements and merger restrictions. Furthermore, the Company’s senior notes and corporate revolving credit facility contain covenants that include, limiting the sale of all or substantially all of the Company’s assets, certain change of control provisions and a negative pledge on certain assets.
The corporate revolving credit facility contains a financial ratio covenant requiring the Company to maintain a net debt (total debt net of cash and cash equivalents) to total capitalization ratio of less than or equal to 62.50% in addition to the covenants noted above.
At December 31, 2021 and 2020, the Company and its related entities were in compliance with all debt covenants and provisions related to potential defaults.
NOTE 22     LEASE AND OTHER FINANCING OBLIGATIONS
The Company primarily has operating and finance leases for corporate and regional offices, processing facilities and mining equipment. These leases have a remaining lease term of less than 1 year to 37 years, some of which may include options to extend the lease for up to 15 years, and some of which may include options to terminate the lease within 1 year. Certain of our leases include payments that vary based on the Company’s level of usage and operations. These variable payments are not included within ROU assets and lease liabilities in the Consolidated Balance Sheets. Additionally, short-term leases, which have an initial term of 12 months or less, are not recorded in the Consolidated Balance Sheets.
Total lease cost includes the following components:
Year Ended December 31,
20212020
Operating lease cost$21 $21 
Finance lease cost
Amortization of ROU assets85 88 
Interest on lease liabilities36 37 
121 125 
Variable lease cost393 335 
Short-term lease cost36 24 
$571 $505 
Supplemental cash flow information related to leases includes the following:
Year Ended December 31,
20212020
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows relating to operating leases$17 $18 
Operating cash flows relating to finance leases$36 $31 
Financing cash flows relating to finance leases$73 $66 
Non-cash lease obligations arising from obtaining ROU assets:
Operating leases$35 $76 
Finance leases$41 $16 
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Information related to lease terms and discount rates is as follows:
Operating LeasesFinance Leases
Weighted average remaining lease term (years)910
Weighted average discount rate4.90 %5.45 %
Future minimum lease payments under non-cancellable leases as of December 31, 2021, were as follows:
Operating Leases(1)
Finance Leases(2)
2022$27 $100 
202322 91 
202420 83 
202512 82 
202611 76 
Thereafter59 403 
Total future minimum lease payments151 835 
Less: Imputed interest(23)(217)
Total$128 $618 
____________________________
(1)The current and non-current portion of operating lease liabilities are included in Other current liabilities and Other non-current liabilities, respectively, on the Consolidated Balance Sheets.
(2)Future minimum lease payments for finance leases exclude payments for built-to-suit leases with commencement dates in the future. The Company has recognized $32 in Leases and other financing obligations at December 31, 2021 related to built-to-suit.
As of December 31, 2021, the Company has additional leases that have not yet commenced. At commencement, the Company anticipates that these leases will result in additional ROU assets and lease liabilities of $40. The leases are anticipated to commence in 2022 with lease terms of 2 to 7 years.
NOTE 23     OTHER LIABILITIES
At December 31,
20212020
Other current liabilities:
Reclamation and remediation liabilities$273 $214 
Accrued operating costs201 285 
Accrued capital expenditures155 144 
Payables to NGM (1)
114 94 
Other (2)
430 445 
$1,173 $1,182 
Other non-current liabilities:
Income and mining taxes (3)
$328 $382 
Other (4)
280 317 
$608 $699 
____________________________
(1)Payables to NGM at December 31, 2021 and December 31, 2020 consist of amounts due to (from) NGM representing Barrick's 61.5% proportionate share of the amount owed to NGM for gold and silver purchased by Newmont and CC&V toll milling provided by NGM. Newmont’s 38.5% share of such amounts is eliminated upon proportionate consolidation of its interest in NGM. The CC&V toll milling agreement with NGM expires on December 31, 2022. Receivables for Newmont's 38.5% proportionate share related to NGM's activities with Barrick are presented within Other current assets.
(2)Other, included in Other current liabilities, primarily includes royalties, the current portion of the silver streaming agreement liability, accrued interest, taxes other than income and mining, the current portion of the Norte Abierto deferred payments and the Conga assets contract liability.
(3)Income and mining taxes at December 31, 2021 and December 31, 2020 includes unrecognized tax benefits, including penalties and interest, of $319 and $367, respectively.
(4)Other, included in Other non-current liabilities, primarily includes the non-current portion of the Norte Abierto deferred payments, the Galore Creek deferred payments and social development and community obligations.
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NOTE 24     RECLASSIFICATIONS OUT OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
Unrealized Gain (Loss) on Marketable Debt SecuritiesForeign Currency Translation AdjustmentsPension and Other Post-retirement Benefit AdjustmentsUnrealized Gain (Loss) on Cash flow Hedge InstrumentsTotal
Balance at December 31, 2019$$119 $(281)$(108)$(265)
Net current-period other comprehensive income (loss):
Gain (loss) in other comprehensive income (loss) before reclassifications
— (2)(51)(4)(57)
(Gain) loss reclassified from accumulated other comprehensive income (loss)
(5)— 95 16 106 
Other comprehensive income (loss)(5)(2)44 12 49 
Balance at December 31, 2020$— $117 $(237)$(96)$(216)
Net current-period other comprehensive income (loss):
Gain (loss) in other comprehensive income (loss) before reclassifications
45 50 
(Gain) loss reclassified from accumulated other comprehensive income (loss)
— — 26 33 
Other comprehensive income (loss)71 83 
Balance at December 31, 2021$$119 $(166)$(88)$(133)
Details about Accumulated Other Comprehensive Income (Loss) ComponentsAmount Reclassified from Accumulated Other Comprehensive Income (Loss)Affected Line Item in the Consolidated Statements of Operations
Year Ended December 31,
202120202019
Marketable debt securities adjustments:
Sale of marketable securities$— $(5)$— Gain on asset and investment sales, net
Total before tax— (5)— 
Tax— — — 
Net of tax$— $(5)$— 
Pension and other post-retirement benefit adjustments:
Amortization$27 $28 $14 Other income (loss), net
Curtailment— — (23)Other income (loss), net
Settlement92 — Other income (loss), net
Total before tax31 120 (9)
Tax(5)(25)— 
Net of tax$26 $95 $(9)
Hedge instruments adjustments:
Interest rate contracts$$17 $11 
Interest expense, net (1)
Operating cash flow hedgesCosts applicable to sales
Total before tax19 14 
Tax(2)(3)(2)
Net of tax$$16 $12 
Total reclassifications for the period, net of tax$33 $106 $
____________________________
(1)Interest rate contracts relate to swaps entered into, and subsequently settled, associated with the issuance of the 2022 Senior Notes, 2035 Senior Notes, 2039 Senior Notes, and 2042 Senior Notes. The related gains and losses are reclassified from Accumulated Other Comprehensive Income (Loss) and amortized to Interest expense, net over the term of the respective hedged notes. During the years ended December 31, 2021 and December 31, 2020, $1 and $(8), respectively, was reclassified to Other income (loss), net as a result of the redemption and tender offers of the 2022 Senior Notes. See Note 21 for additional information.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
NOTE 25     NET CHANGE IN OPERATING ASSETS AND LIABILITIES
Net cash provided by (used in) operating activities of continuing operations attributable to the net change in operating assets and liabilities is composed of the following:
Year Ended December 31,
202120202019
Decrease (increase) in operating assets:
Trade and other receivables $142 $29 $(193)
Inventories, stockpiles and ore on leach pads (136)(139)(132)
Other assets 36 34 29 
Increase (decrease) in operating liabilities:
Accounts payable(11)(50)144 
Reclamation and remediation liabilities (161)(101)(102)
Accrued tax liabilities(317)378 47 
Other accrued liabilities(94)144 (102)
$(541)$295 $(309)
NOTE 26     COMMITMENTS AND CONTINGENCIES
General
Estimated losses from contingencies are accrued by a charge to income when information available prior to issuance of the financial statements indicates that it is probable that a liability could be incurred and the amount of the loss can be reasonably estimated. Legal expenses associated with the contingency are expensed as incurred. If a loss contingency is not probable or reasonably estimable, disclosure of the contingency and estimated range of loss, if determinable, is made in the financial statements when it is at least reasonably possible that a material loss could be incurred.
Operating Segments
The Company’s operating and reportable segments are identified in Note 4. Except as noted in this paragraph, all of the Company’s commitments and contingencies specifically described herein are included in Corporate and Other. The Yanacocha matters relate to the South America reportable segment. The Newmont Ghana Gold and Newmont Golden Ridge matters relate to the Africa reportable segment. The Mexico tax matter relates to the North America reportable segment.
Environmental Matters
Refer to Note 6 for further information regarding reclamation and remediation. Details about certain significant matters are discussed below.
Minera Yanacocha S.R.L.
In early 2015 and again in June 2017, the Peruvian government agency responsible for certain environmental regulations, the Ministry of the Environment (“MINAM”), issued proposed modifications to water quality criteria for designated beneficial uses which apply to mining companies, including Yanacocha. These criteria modified the in-stream water quality criteria pursuant to which Yanacocha has been designing water treatment processes and infrastructure. In December 2015, MINAM issued the final regulation that modified the water quality standards. These Peruvian regulations allow time to formulate a compliance plan and make any necessary changes to achieve compliance.
In February 2017, Yanacocha submitted a modification to its previously approved compliance achievement plan to the Mining Ministry (“MINEM”). The Company did not receive a response or comments to this submission until April 2021 and is now in the process of updating its compliance achievement plan to address these comments. During this interim period, Yanacocha separately submitted an Environmental Impact Assessment (EIA) modification considering the ongoing operations and the projects to be developed and obtained authorization from MINEM for such projects. This authorization included a deadline for compliance with the modified water quality criteria by January 2024. Consequently, part of the Company response to MINEM will include a request for an extension of time for coming into full compliance with the new regulations. In the event that MINEM does not grant Yanacocha an extension of the previously authorized timeline for, and agree to, the updated compliance achievement plan, fines and penalties relating to noncompliance may result beyond January 2024.
The Company currently operates five water treatment plants at Yanacocha that have been and currently meet all currently applicable water discharge requirements. The Company is conducting detailed studies to better estimate water management and other closure activities that will ensure water quality and quantity discharge requirements, including the modifications promulgated by MINAM, as referenced above, will be met. This also includes performing a comprehensive update to the Yanacocha reclamation plan to
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
address changes in closure activities and estimated closure costs while preserving optionality for potential future projects at Yanacocha. These ongoing studies, which will extend beyond the current year, were progressed in the fourth quarter of 2021 as the study team continued to evaluate and revise assumptions and estimated costs of changes to the reclamation plan. While certain estimated costs remain subject to revision, in conjunction with the Company’s annual 2021 update process for all asset retirement obligations, the Company recorded an increase of $1,597 to the Yanacocha reclamation liability based on the progress of the closure studies with a corresponding non-cash charge of $1,554 recorded to reclamation expense related to portions of site operations no longer in production with no expected substantive future economic value and $43 recorded as an increase to the asset retirement cost for producing areas of the operation.
The annual 2021 update related primarily to the expected construction of two water treatment plants, a related increase in the annual operating costs over the extended closure period, and initial consideration of known risks (including the associated risk that these water treatment estimates could change in the future as more work is completed). However, these and other additional risks and contingencies that are the subject of ongoing studies could result in future material increases to the reclamation obligation at Yanacocha, including, but not limited to, a comprehensive review of our tailings storage facility management, review of Yanacocha’s water balance and storm water management system, and review of post-closure management costs. The ongoing studies, which are expected to be progressed in 2022, are intended to evaluate and further understand these risks and determine what, if any, additional modification may be required to the reclamation plan, therefore, the Company is currently unable to reasonably estimate the impacts these risks, if realized, may have on the reclamation obligation as of December 31, 2021.
In February 2022, the Company completed the acquisition of Buenaventura’s 43.65% noncontrolling interest in Yanacocha (the “Yanacocha Transaction”). Upon close of the Yanacocha Transaction, the Company’s ownership interest in Yanacocha increased from 51.35% to 95%. Refer to Note 1 for further information regarding the Yanacocha Transaction.
Cripple Creek & Victor Gold Mining Company LLC - 100% Newmont Owned
In December 2021, Cripple Creek & Victor Gold Mining Company LLC (“CC&V”, a wholly-owned subsidiary of the Company) entered into a Settlement Agreement (“Settlement Agreement”) with the Water Quality Control Division of the Colorado Department of Public Health and Environment (the “Division”) with a mutual objective of resolving issues associated with the new discharge permits issued by the Division in January 2021 for the historic Carlton Tunnel. The Carlton Tunnel was a historic tunnel completed in 1941 with the purpose of draining the southern portion of the mining district, subsequently consolidated by CC&V. CC&V has held discharge permits for the Carlton Tunnel since 1983, but the January 2021 new permits contained new water quality limits. The Settlement Agreement, once implemented through permit modification applications, would involve installation of interim passive water treatment and ongoing monitoring over the next three years, and then more long-term water treatment installed with target compliance by November 2027. The Company is currently considering various interim passive water treatment options, with related studies expected to be progressed in 2022, and based on an evaluation of those options, a remediation liability of $10 was recorded as of December 31, 2021. If one of these passive water treatment options is determined not to be a viable long-term water treatment strategy, CC&V may be required to develop and implement alternative remediation plans for water discharged from the Carlton Tunnel. Depending on the remediation plans that may ultimately be agreed with the Division, a material adjustment to the remediation liability may be required.
Dawn Mining Company LLC (“Dawn”) - 58.19% Newmont Owned
Midnite mine site and Dawn mill site. Dawn previously leased an open pit uranium mine, currently inactive, on the Spokane Indian Reservation in the State of Washington. The mine site is subject to regulation by agencies of the U.S. Department of Interior (the Bureau of Indian Affairs and the Bureau of Land Management), as well as the U.S. Environmental Protection Agency (“EPA”).
As per the Consent Decree approved by the U.S. District Court for the Eastern District of Washington on January 17, 2012, the following actions were required of Newmont, Dawn, the Department of the Interior and the EPA: (i) Newmont and Dawn would design, construct and implement the cleanup plan selected by the EPA in 2006 for the Midnite mine site; (ii) Newmont and Dawn would reimburse the EPA for its past costs associated with overseeing the work; (iii) the Department of the Interior would contribute a lump sum amount toward past EPA costs and future costs related to the cleanup of the Midnite mine site; (iv) Newmont and Dawn would be responsible for all future EPA oversight costs and Midnite mine site cleanup costs; and (v) Newmont would post a surety bond for work at the site.
During 2012, the Department of Interior contributed its share of past EPA costs and future costs related to the cleanup of the Midnite mine site in a lump sum payment of $42, which Newmont classified as restricted assets with interest on the Consolidated Balance Sheets for all periods presented. In 2016, Newmont completed the remedial design process (with the exception of the new water treatment plant (“WTP”) design which was awaiting the approval of the new National Pollutant Discharge Elimination System (“NPDES”) permit). Subsequently, the new NPDES permit was received in 2017 and the WTP design commenced in 2018. The EPA completed their assessment and approval of the WTP design in 2021 and Newmont is in the process of coordinating work with selected contractors for the construction of a new water treatment plant.
The Dawn mill site is regulated by the Washington Department of Health and is in the process of being closed. Remediation at the Dawn mill site began in 2013. The Tailing Disposal Area 1-4 reclamation earthworks component was completed during 2017 with the embankment erosion protection completed in the second quarter of 2018. The remaining closure activity will consist primarily of addressing groundwater issues and evaporating the remaining balance of process water on site.
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
The remediation liability for the Midnite mine site and Dawn mill site is approximately $172 at December 31, 2021.
Other Legal Matters
Minera Yanacocha S.R.L.
Administrative Actions. The Peruvian government agency responsible for environmental evaluation and inspection, Organismo Evaluacion y Fiscalizacion Ambiental (“OEFA”), conducts periodic reviews of the Yanacocha site. From 2011 to the fourth quarter of 2021, OEFA issued notices of alleged violations of OEFA standards to Yanacocha and Conga relating to past inspections. The water authority that is in charge of supervising the proper water administration has also issued notices of alleged regulatory violations in previous years. The experience with OEFA and the water authority is that in the case of a finding of violation, remedial action is often the outcome rather than a significant fine. There are no current alleged OEFA violations and the water authority alleged violations range from zero to 10 units, with each unit having a potential fine equivalent to approximately $.001110 based on current exchange rates, with a total potential fine amount for outstanding matters of $— to $0.01. Yanacocha is responding to all notices of alleged violations, but cannot reasonably predict the outcome of the agency allegations.
Conga Project Constitutional Claim. On October 18, 2012, Marco Antonio Arana Zegarra filed a constitutional claim against the Ministry of Energy and Mines and Yanacocha requesting the Court to order the suspension of the Conga project as well as to declare not applicable the October 27, 2010, directorial resolution approving the Conga project Environmental Impact Assessment (“EIA”). On October 23, 2012, a Cajamarca judge dismissed the claims based on formal grounds finding that: (i) plaintiffs had not exhausted previous administrative proceedings; (ii) the directorial resolution approving the Conga EIA is valid, and was not challenged when issued in the administrative proceedings; (iii) there was inadequate evidence to conclude that the Conga project is a threat to the constitutional right of living in an adequate environment; and (iv) the directorial resolution approving the Conga project EIA does not guarantee that the Conga project will proceed, so there was no imminent threat to be addressed by the Court. The plaintiffs appealed the dismissal of the case. The Civil Court of the Superior Court of Cajamarca confirmed the above mentioned resolution and the plaintiff presented an appeal. On March 13, 2015, the Constitutional Court published its ruling stating that the case should be sent back to the first court with an order to formally admit the case and start the judicial process in order to review the claim and the proofs presented by the plaintiff. Yanacocha has answered the claim. Neither the Company nor Yanacocha can reasonably predict the outcome of this litigation.
Yanacocha Tax Dispute. In 2000, Yanacocha paid Buenaventura and Minas Conga S.R.L. a total of $29 to assume their respective contractual positions in mining concession agreements with Chaupiloma Dos de Cajamarca S.M.R.L. The contractual rights allowed Yanacocha the opportunity to conduct exploration on the concessions, but were not a purchase of the concessions. The tax authority alleged that the payments to Buenaventura and Minas Conga S.R.L. were acquisitions of mining concessions requiring the amortization of the amounts under the Peru Mining Law over the life of the mine. Yanacocha expensed the amounts at issue in the initial year since the payments were not for the acquisition of a concession but rather these expenses represented the payment of an intangible and therefore, were amortizable in a single year or proportionally for up to ten years according to Income Tax Law. In 2010, the tax court in Peru ruled in favor of Yanacocha and the tax authority appealed the issue to the judiciary. The first appellate court confirmed the ruling of the tax court in favor of Yanacocha. However, in November 2015, a Superior Court in Peru made an appellate decision overturning the two prior findings in favor of Yanacocha. Yanacocha appealed the Superior Court ruling to the Peru Supreme Court. In January 2019, the Peru Supreme Court issued notice that three judges supported the position of the tax authority and two judges supported the position of Yanacocha. Because four votes are required for a final decision, an additional judge was selected to issue a decision and the parties conducted oral arguments in April 2019. In February 2020, the additional judge ruled in favor of the tax authority, finalizing a decision of the Peru Supreme Court against Yanacocha. As a result of the decision, the company recognized the amount of $29 in 2020. However, Yanacocha filed two constitutional actions in 2020, and one legal claim in 2021, objecting to potential excessive interest and duplicity of criteria of up to $50, $73, and $68, respectively. In March 2021, in one of the constitutional actions, Yanacocha’s request for an injunction to suspend the collection of interest was denied. The matter was sent back to the tax authority, which issued a resolution with an update of the total amount. Yanacocha appealed the tax authority’s resolution and, in October 2021, the tax court denied the appeal. As a result, the administrative case went back to the tax authority for collection and the Company paid the amount claimed due in October 2021 of approximately $80 and recognized income tax expense of $55 for the year ended December 31, 2021. In January 2022, Yanacocha filed a fourth legal claim, objecting to the amount of up to $72. The Company continues to pursue the legal actions that remain pending, seeking to recover up to $73 of the total amount paid based on current exchange rates, but it is not possible to fully predict the outcome of such litigation.
In February 2022, the Company completed the acquisition of Buenaventura’s 43.65% noncontrolling interest in Yanacocha (the “Yanacocha Transaction”). Upon close of the Yanacocha Transaction, the Company’s ownership interest in Yanacocha increased from 51.35% to 95%. Refer to Note 1 for further information regarding the Yanacocha Transaction.
Newmont Corporation, as well as Newmont Canada Corporation, and Newmont Canada FN Holdings ULC – 100% Newmont Owned

Kirkland Lake Gold Inc. (“Kirkland”) owns certain mining and mineral rights in northeastern Ontario, Canada, referred to here as the Holt-McDermott property, on which it suspended operations in April 2020. A subsidiary of the Company has a retained royalty obligation (“Holt royalty obligation”) to Royal Gold, Inc. (“Royal Gold”) for production on the Holt-McDermott property. In August 2020,
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NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
the Company and Kirkland signed a Strategic Alliance Agreement (the “Kirkland Agreement”). As part of the Kirkland Agreement, the Company purchased an option (the “Holt option”) for $75 from Kirkland for the mining and mineral rights subject to the Holt royalty obligation. The Company has the right to exercise the Holt option and acquire ownership to the mineral interests subject to the Holt royalty obligation in the event Kirkland intends to resume operations and process material subject to the obligation. Kirkland has the right to assume the Company’s Holt royalty obligation at any time, in which case the Holt option would terminate.
On August 16, 2021, International Royalty Corporation (“IRC”), a wholly-owned subsidiary of Royal Gold, filed an action in the Supreme Court of Nova Scotia against Newmont Corporation, Newmont Canada Corporation, Newmont Canada FN Holdings ULC, and Kirkland. IRC alleges the Kirkland Agreement is oppressive to the interests of Royal Gold under the Nova Scotia Companies Act and the Canada Business Corporations Act, and that, by entering into the Kirkland Agreement, Newmont breached its contractual obligations to Royal Gold. IRC seeks declaratory relief, and $350 in alleged royalty payments that it claims Newmont expected to pay under the Holt royalty obligation, but for the Kirkland Agreement. The Company intends to vigorously defend this matter, but cannot reasonably predict the outcome.
NWG Investments Inc. v. Fronteer Gold Inc.
In April 2011, Newmont acquired Fronteer Gold Inc. (“Fronteer”).
Fronteer acquired NewWest Gold Corporation (“NewWest Gold”) in September 2007. At the time of that acquisition, NWG Investments Inc. (“NWG”) owned approximately 86% of NewWest Gold and an individual named Jacob Safra owned or controlled 100% of NWG. Prior to its acquisition of NewWest Gold, Fronteer entered into a June 2007 lock-up agreement with NWG providing that, among other things, NWG would support Fronteer’s acquisition of NewWest Gold. At that time, Fronteer owned approximately 47% of Aurora Energy Resources Inc. (“Aurora”), which, among other things, had a uranium exploration project in Labrador, Canada.
NWG contends that, during the negotiations leading up to the lock-up agreement, Fronteer represented to NWG, among other things, that Aurora would commence uranium mining in Labrador by 2013, that this was a firm date, that Aurora faced no current environmental issues in Labrador and that Aurora’s competitors faced delays in commencing uranium mining. NWG further contends that it entered into the lock-up agreement and agreed to support Fronteer’s acquisition of NewWest Gold in reliance upon these purported representations. On October 11, 2007, less than three weeks after the Fronteer-NewWest Gold transaction closed, a member of the Nunatsiavut Assembly introduced a motion calling for the adoption of a moratorium on uranium mining in Labrador. On April 8, 2008, the Nunatsiavut Assembly adopted a three-year moratorium on uranium mining in Labrador. NWG contends that Fronteer was aware during the negotiations of the NWG/Fronteer lock-up agreement that the Nunatsiavut Assembly planned on adopting this moratorium and that its adoption would preclude Aurora from commencing uranium mining by 2013, but Fronteer nonetheless fraudulently induced NWG to enter into the lock-up agreement.
On September 24, 2012, NWG served a summons and complaint on the Company, and then amended the complaint to add Newmont Canada Holdings ULC as a defendant. The complaint also named Fronteer Gold Inc. and Mark O’Dea as defendants. The complaint sought rescission of the merger between Fronteer and NewWest Gold and $750 in damages. In August 2013 the Supreme Court of New York, New York County issued an order granting the defendants’ motion to dismiss on forum non conveniens. Subsequently, NWG filed a notice of appeal of the decision and then a notice of dismissal of the appeal on March 24, 2014.
On February 26, 2014, NWG filed a lawsuit in Ontario Superior Court of Justice against Fronteer Gold Inc., Newmont Mining Corporation, Newmont Canada Holdings ULC, Newmont FH B.V. and Mark O’Dea. The Ontario complaint is based upon substantially the same allegations contained in the New York lawsuit with claims for fraudulent and negligent misrepresentation. NWG seeks disgorgement of profits since the close of the NWG deal on September 24, 2007 and damages in the amount of C$1,200. Newmont, along with other defendants, served the plaintiff with its statement of defense on October 17, 2014. Newmont intends to vigorously defend this matter, but cannot reasonably predict the outcome.
Newmont Ghana Gold Limited and Newmont Golden Ridge Limited - 100% Newmont Owned
On December 24, 2018, two individual plaintiffs, who are members of the Ghana Parliament (“Plaintiffs”), filed a writ to invoke the original jurisdiction of the Supreme Court of Ghana. On January 16, 2019, Plaintiffs filed the Statement of Plaintiff’s Case outlining the details of the Plaintiff’s case and subsequently served Newmont Ghana Gold Limited (“NGGL”) and Newmont Golden Ridge Limited (“NGRL”) along with the other named defendants, the Attorney General of Ghana, the Minerals Commission of Ghana and 33 other mining companies with interests in Ghana. The Plaintiffs allege that under article 268 of the 1992 Constitution of Ghana that the mining company defendants are not entitled to carry out any exploitation of minerals or other natural resources in Ghana, unless their respective transactions, contracts or concessions are ratified or exempted from ratification by the Parliament of Ghana. Newmont’s current mining leases are both ratified by Parliament; NGGL June 13, 2001 mining lease, ratified by Parliament on October 21, 2008, and NGRL January 19, 2010 mining lease; ratified by Parliament on December 3, 2015. The writ alleges that any mineral exploitation prior to Parliament ratification is unconstitutional. The Plaintiffs seek several remedies including: (i) a declaration as to the meaning of constitutional language at issue; (ii) an injunction precluding exploitation of minerals for any mining company without prior Parliament ratification; (iii) a declaration that all revenue as a result of violation of the Constitution shall be accounted for and recovered via cash equivalent; and (iv) an order that the Attorney General and Minerals Commission submit all un-ratified mining leases, undertakings or contracts to Parliament for ratification. Newmont intends to vigorously defend this matter, but cannot reasonably predict the outcome.
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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
Goldcorp, Inc. - 100% Newmont Owned
Shareholder Action. On October 28, 2016 and February 14, 2017, separate proposed class actions were commenced in the Ontario Superior Court of Justice pursuant to the Class Proceedings Act (Ontario) against the Company and certain of its current and former officers. Both statement of claims alleged common law negligent misrepresentation in Goldcorp, Inc.’s public disclosure concerning the Peñasquito mine and also pleaded an intention to seek leave from the Court to proceed with an allegation of statutory misrepresentation pursuant to the secondary market civil liability provisions under the Securities Act (Ontario). By a consent order, the latter lawsuit proceeded, and the former action has been stayed. The active lawsuit purports to be brought on behalf of persons who acquired Goldcorp Inc.’s securities in the secondary market during an alleged class period from October 30, 2014 to August 23, 2016. An amended complaint was filed in the active lawsuit, which removed the individual defendants, and requested leave of the Court to pursue only the statutory cause of action. In July of 2021, plaintiff’s counsel filed a motion to discontinue the active lawsuit. The motion was granted by the Court in September 2021, discontinuing the active lawsuit, but the Company was not provided notice of the Court’s decision until the first quarter of 2022.
Mexico Tax Matter
Tax Reassessment from Mexican Tax Authority. During 2016, the Mexican Tax Authority issued reassessment notices to several of Goldcorp, Inc.’s Mexican subsidiaries. Topics under dispute generally involve transfer pricing, deductibility of mine stripping costs, and gain recognized on certain asset sales. The Company has made significant progress in reaching resolution with the Mexican Tax Authority on these matters. In the second quarter of 2019, a number of issues were settled, resulting in a $96 payment, which was fully accrued in the financial statements. In the first quarter of 2020, further settlement was reached for an immaterial amount, with dialogue continuing in an effort to resolve the outstanding reassessment. Additionally, the Company continues to work through several audits in which observation letters have been received from the Mexican Tax Authority. During the fourth quarter of 2021, a framework to settle a number of years and matters was reached, resulting in a $76 payment, which was fully accrued in the financial statements. Full settlement of these years and matters is expected to be reached first half of next year.
Other Commitments and Contingencies
As part of its ongoing business and operations, the Company and its affiliates are required to provide surety bonds, bank letters of credit and bank guarantees as financial support for various purposes, including environmental remediation, reclamation, exploration permitting, workers compensation programs and other general corporate purposes. At December 31, 2021 and 2020, there were $1,927 and $1,807, respectively, of outstanding letters of credit, surety bonds and bank guarantees. The obligations associated with these instruments are generally related to performance requirements that the Company addresses through its ongoing operations. As the specific requirements are met, the beneficiary of the associated instrument cancels and/or returns the instrument to the issuing entity. Certain of these instruments are associated with operating sites with long-lived assets and will remain outstanding until closure. Generally, bonding requirements associated with environmental regulation are becoming more restrictive. However, the Company believes it is in compliance with all applicable bonding obligations and will be able to satisfy future bonding requirements through existing or alternative means, as they arise.
Newmont is from time to time involved in various legal proceedings related to its business. Except in the above described proceedings, management does not believe that adverse decisions in any pending or threatened proceeding or that amounts that may be required to be paid by reason thereof will have a material adverse effect on the Company’s financial condition or results of operations.
In connection with our investment in Galore Creek, Newmont will owe NovaGold Resources Inc. $75 upon the earlier of approval to construct a mine, mill and all related infrastructure for the Galore Creek project or the initiation of construction of a mine, mill or any related infrastructure. The amount due is non-interest bearing. The decision for an approval and commencement of construction is contingent on the results of a prefeasibility and feasibility study, neither of which have occurred. As such, this amount has not been accrued.
Deferred payments to Barrick of $124 and $156 as of December 31, 2021 and December 31, 2020, respectively, are to be satisfied through funding a portion of Barrick’s share of project expenditures at the Norte Abierto project. These deferred payments to Barrick are included in Other current liabilities and Other non-current liabilities.
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NEWMONT CORPORATION
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
(dollars in millions, except per share, per ounce and per pound amounts)
ITEM 9.       CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
None.
ITEM 9A.       CONTROLS AND PROCEDURES
Evaluation of Disclosure Controls and Procedures
The Company’s management, with the participation of the Chief Executive Officer and Chief Financial Officer of the Company, carried out an evaluation of the effectiveness of the design and operation of the Company’s disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) as of December 31, 2021, the end of the period covered by this report. Based on such evaluation, the Company’s Chief Executive Officer and Chief Financial Officer have concluded that, as of December 31, 2021, the Company’s disclosure controls and procedures are effective to ensure that information required to be disclosed by the Company in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the required time periods and are designed to ensure that information required to be disclosed in its reports is accumulated and communicated to the Company’s management, including the Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.
Management’s Report on Internal Control over Financial Reporting
The management of the Company is responsible for establishing and maintaining adequate internal control over financial reporting. Internal control over financial reporting is a process designed by, or under the supervision of, the Company’s principal executive and principal financial officers and effected by the Company’s Board of Directors, management and other personnel, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. GAAP. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.
The Company’s management assessed the effectiveness of the Company’s internal control over financial reporting at December 31, 2021. In making this assessment, the Company’s management used the criteria set forth by the Committee of Sponsoring Organizations of the Treadway Commission (COSO) in Internal Control-Integrated Framework 2013. Based upon its assessment, management concluded that, at December 31, 2021, the Company’s internal control over financial reporting was effective.
As permitted by the SEC Staff interpretive guidance for proportionately consolidated entities, the Company’s management excluded NGM from its assessment of internal control over financial reporting at December 31, 2021, as management does not have the ability to dictate, modify or assess the controls at NGM. The Company has implemented internal controls over financial reporting for recognizing its proportionate share of the assets, liabilities, and operations of NGM. Refer to Part II, Item 8 "Financial Statements and Supplementary Data" for NGM's "Report of Independent Registered Public Accounting Firm" for Opinion on the Financial Statements and Internal Controls over Financial Reporting.
NGM represented 19% of the Company’s consolidated Total assets at December 31, 2021, while its Sales comprised 19% of the Company’s consolidated sales and its Net income attributable to Newmont stockholders comprised 327% of the Company’s net income for the year ended December 31, 2021.
Ernst & Young LLP, an independent registered public accounting firm, who audited the Company’s Consolidated Financial Statements at December 31, 2021 and the year then ended included in this Form 10-K, has issued an attestation report on the Company’s internal control over financial reporting, at December 31, 2021, which is included herein.
Changes in Internal Controls
There were no changes in the Company’s internal control over financial reporting that occurred during the quarter ended December 31, 2021, that have materially affected, or are reasonably likely to materially affect, our internal controls over financial reporting.
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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
To the Board of Directors and Stockholders of Newmont Corporation

Opinion on Internal Control Over Financial Reporting
We have audited Newmont Corporation’s internal control over financial reporting as of December 31, 2021, based on criteria established in Internal Control—Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission 2013 framework (the COSO criteria). In our opinion, Newmont Corporation (the Company), based on our audit and the report of other auditors, maintained, in all material respects, effective internal control over financial reporting as of December 31, 2021, based on the COSO criteria.

We did not examine the effectiveness of internal control over financial reporting of Nevada Gold Mines LLC, a 38.5% owned investment which is proportionately consolidated, whose financial statements reflect total assets, sales and net income constituting 19%, 19%, and 327%, respectively, of the related consolidated financial statement amounts as of and for the year ended December 31, 2021. The effectiveness of Nevada Gold Mines LLC’s internal control over financial reporting was audited by other auditors whose report has been furnished to us, and our opinion, insofar as it relates to the effectiveness of Nevada Gold Mines LLC’s internal control over financial reporting, is based solely on the report of the other auditors.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), the consolidated balance sheets of the Company as of December 31, 2021 and 2020, the related consolidated statements of operations, comprehensive income (loss), changes in equity and cash flows for each of the three years in the period ended December 31, 2021, the related notes and financial statement schedule in Item 15(a)(2) and our report dated February 24, 2022 expressed an unqualified opinion thereon, based on our audit and the report of the other auditors.

Basis for Opinion
The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting included in the accompanying Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit and the report of the other auditors. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects.

Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit and the report of other auditors provides a reasonable basis for our opinion

Definition and Limitations of Internal Control Over Financial Reporting
A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ Ernst & Young LLP

Denver, Colorado
February 24, 2022
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ITEM 9B.       OTHER INFORMATION
Compensatory Arrangements of Certain Officers:
On February 22, 2022, following review of market compensation and individual performance, the Company’s Board of Directors approved for Mr. Tom Palmer, President and Chief Executive Officer, an annual base salary of $1,435,000, effective March 1, 2022, and target long term incentives of $8,900,000, payable in future years according to the terms of the Company’s long term incentive programs.
On February 22, 2022, following review of market compensation and individual performance, the Company’s Leadership Development and Compensation Committee of the Board of Directors approved annual base salaries, effective March 1, 2022, as follows: Mr. Rob Atkinson, Executive Vice President and Chief Operating Officer - $832,000; Ms. Nancy Buese, Executive Vice President and Chief Financial Officer - $765,000; and Mr. Stephen Gottesfeld, Executive Vice President and Chief Sustainability Officer - $575,000.
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PART III
ITEM 10.       DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE
Information concerning Newmont’s directors, Audit Committee, compliance with Section 16(a) of the Exchange Act and Code of Ethics is contained in Newmont’s definitive Proxy Statement, filed pursuant to Regulation 14A promulgated under the Securities Exchange Act of 1934 for the 2022 Annual Meeting of Stockholders and is incorporated herein by reference.
Information concerning Newmont’s executive officers, as of December 31, 2021, is set forth below:
NameAgeOffice
Thomas R. Palmer54President and Chief Executive Officer
Rob Atkinson51Executive Vice President and Chief Operating Officer
Nancy K. Buese51Executive Vice President and Chief Financial Officer
Jennifer Cmil51Executive Vice President, Human Resources
Dean Gehring53Executive Vice President and Chief Technology Officer
Stephen P. Gottesfeld54Executive Vice President and Chief Sustainability & External Affairs Officer
Nancy Lipson51Executive Vice President and General Counsel
Blake Rhodes54Senior Vice President, Strategic Development
Brian C. Tabolt40Vice President, Controller and Chief Accounting Officer
There are no family relationships by blood, marriage or adoption among any of the above executive officers or members of the Board of Directors of Newmont. Each executive officer is elected annually by the Board of Directors of Newmont to serve for one year or until his or her respective successor is elected and qualified. There is no arrangement or understanding between any of the above executive officers and any other person pursuant to which he or she was selected as an executive officer.
Mr. Palmer was first elected as President and Chief Executive Officer and a member of the Board of Directors in October 2019. He served as President since June 2019 and as President and Chief Operating Officer from November 2018 until June 2019. Previously, he served as Executive Vice President and Chief Operating Officer since May 2016. Mr. Palmer was elected Senior Vice President, Asia Pacific in February 2015 after serving as Senior Vice President, Indonesia since March 2014. Prior to joining Newmont, he was the Chief Operating Officer, Pilbara Mines at Rio Tinto Iron Ore. Over a 20-year career with Rio Tinto, Mr. Palmer worked in a variety of roles across a number of commodities, including General Manager, Technology for the Bauxite and Alumina business; General Manager, Operations at Hail Creek coal mine; and General Manager, Asset Management at Palabora Mining Company in South Africa.
Mr. Atkinson was first elected Executive Vice President and Chief Operating Officer in June 2019. Mr. Atkinson most recently served as Head of Productivity and Technical Support for Rio Tinto from June 2016 to February 2019. He also served as Chief Operating Officer for Rio Tinto’s portfolio of copper interests in Mongolia, the US, Chile and Indonesia from September 2013 to May 2016. Prior to that Mr. Atkinson lead ASX-listed Energy Resources of Australia as Chief Executive and Director from September 2008 to August 2013 and served as General Manager of Weipa Bauxite from June 2005 to August 2008.
Ms. Buese was first elected Executive Vice President and Chief Financial Officer in October 2016. Ms. Buese most recently served as Executive Vice President and Chief Financial Officer for MPLX, a publicly traded energy company formed by Marathon Petroleum Corporation. Prior to MPLX’s acquisition of MarkWest Energy Partners in 2015, Ms. Buese served for 11 years as Executive Vice President and Chief Financial Officer of MarkWest. Ms. Buese also is a former Partner with Ernst & Young and worked in public accounting for 12 years.
Ms. Cmil was first elected Executive Vice President, Human Resources in October 2019. She served as Senior Vice President, Human Resources since June 2019 after having previously serving as Vice President, Talent Management since February 2018. Ms. Cmil joined the Company in 2010 and has held the roles of Group Executive, Human Resources from April 2014 to February 2018, and Senior Director, Human Resources from May 2010 to March 2014.
Mr. Gehring was first elected as Executive Vice President and Chief Technology Officer in June 2019 after serving as Regional Senior Vice President, South America since June 2017. Prior to joining Newmont, Mr. Gehring spent 14 years with Rio Tinto in a variety of executive roles including President and Chief Executive Officer of Rio Tinto Minerals from October 2014 to October 2016. Prior roles also included Global Head of Safety and Security and General Manager of Resource Development for the Oyu Tolgoi mine in Mongolia. He previously worked as Manager of Technical Services at Freeport’s Grasberg mine and held various operational and technical roles with BHP Billiton prior that.
Mr. Gottesfeld was first elected as Executive Vice President and Chief Sustainability & External Affairs Officer in June 2019 after having served as Executive Vice President and General Counsel since March 2015. Prior to that he served as Executive Vice President, General Counsel and Corporate Secretary since February 2013. He previously served as Senior Vice President, General Counsel and Corporate Secretary since February 2012 and Vice President and General Counsel since January 2010. Mr. Gottesfeld was Vice President, Communications and Public Affairs from 2006 to 2010. Mr. Gottesfeld was Newmont's Associate General Counsel from 2004 to 2006, responsible for Newmont's Latin American, African and Central Asian legal affairs. From 2002 to 2004, Mr. Gottesfeld
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was Newmont's Associate General Counsel and General Manager of Newmont Peru S.R.L., working in Lima, Peru. From 1997 to 2001, Mr. Gottesfeld served in various roles, including as Assistant General Counsel and Senior Counsel.
Ms. Lipson was first elected as Executive Vice President and General Counsel in June 2019, after previously serving as Vice President and Deputy General Counsel since February 2013. Prior to that she served as Associate General Counsel and Assistant Secretary since January 2010. From July 2005 to January 2010, she was Assistant General Counsel. Prior to joining the Company in July 2005 she was Senior Counsel for Sports Authority and for Qwest Communications. Ms. Lipson was also an Associate with the law firm of Otten, Johnson, Robinson, Neff & Ragonetti, P.C.
Mr. Rhodes was first elected to Senior Vice President, Strategic Development in June 2019. He joined Newmont in September 1996 and has spent the past 10 years in corporate development and Indonesia-focused roles, following 13 years in legal positions with the Company. Mr. Rhodes worked extensively in Indonesia, serving as both Indonesia Country Manager and Regional Senior Vice President. He has been at the corporate office since May 2014, serving in various corporate and strategic development roles of increasing responsibility.
Mr. Tabolt was first elected Vice President, Controller and Chief Accounting Officer in May 2021. Mr. Tabolt previously served as Molson Coors Beverage Company’s Vice President, Controller and Chief Accounting Officer since 2014. Prior to that role, he held other senior management roles within Molson Coors’ Accounting function, including as Senior Director of SEC Reporting and Technical Accounting and Senior Manager Technical Accounting. Mr. Tabolt began his career in public accounting with Deloitte, holds Bachelor and Master of Science degrees in Accounting from Pennsylvania State University and is a Certified Public Accountant.
ITEM 11.       EXECUTIVE COMPENSATION
Information concerning this item is contained in Newmont’s definitive Proxy Statement, filed pursuant to Regulation 14A promulgated under the Securities Exchange Act of 1934 for the 2022 Annual Meeting of Stockholders and is incorporated herein by reference.
ITEM 12.       SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS
Information concerning this item is contained in Newmont’s definitive Proxy Statement, filed pursuant to Regulation 14A promulgated under the Securities Exchange Act of 1934 for the 2022 Annual Meeting of Stockholders and incorporated herein by reference.
Equity Compensation Plan Information
The following table sets forth at December 31, 2021 information regarding Newmont’s Common Stock that may be issued under Newmont’s equity compensation plans:
Number of Securities to be issued upon exercise of outstanding options, warrants and rightsWeighted average exercise price of outstanding options, warrants and rightsNumber of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
Plan Category(a)
(b) (1)
(c)
Equity compensation plans approved by security holders (2)
3,616,947 
(3)
56.6123 22,796,541 
(4)
Equity compensation plans not approved by security holders— N/A— 
____________________________
(1)The weighted average exercise price includes Goldcorp Options. It does not take into account the shares issuable upon vesting of restricted stock units, performance leveraged stock units or strategic stock units.
(2)Newmont’s 2020 Stock Incentive Plan was approved by the stockholders on April 21, 2020. A maximum of 20,000,000 shares of Newmont's Common Stock, plus up to 3,644,782 shares available for grant under the 2013 Incentive Plan as of May 1, 2020, were authorized to be issued under the 2013 Stock Incentive Plan at that time. There are currently 22,796,541 shares registered and available to grant under the 2020 Stock Incentive Plan. There are no equity compensation plans not approved by stockholders.
(3)This balance includes outstanding Goldcorp RSUs exchanged for Newmont awards (“Substitute Awards”) upon acquisition. These Substitute Awards do not count against Newmont’s plan balance pursuant to paragraphs 2(ww) and 4(b) (vi) of Newmont’s 2020 Stock Incentive Plan.
(4)Securities remaining available for future issuance under the 2020 Stock Incentive Plan. No additional grants or awards will be made under any of the Company’s other plans. This balance does not include the Substitute Awards, as they are excluded from Newmont’s plan balance pursuant to paragraphs 2(ww) and 4(b)(vi) of Newmont’s 2020 Stock Incentive Compensation Plan.
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ITEM 13.       CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE
Information concerning this item is contained in Newmont’s definitive Proxy Statement, filed pursuant to Regulation 14A promulgated under the Securities Exchange Act of 1934 for the 2022 Annual Meeting of Stockholders and incorporated herein by reference.
ITEM 14.       PRINCIPAL ACCOUNTANT FEES AND SERVICES
Information concerning this item is contained in Newmont’s definitive Proxy Statement, filed pursuant to Regulation 14A promulgated under the Securities Exchange Act of 1934 for the 2022 Annual Meeting of Stockholders and incorporated herein by reference.
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PART IV
ITEM 15.       EXHIBITS, FINANCIAL STATEMENT SCHEDULES
The following documents are filed as a part of this report:
(a)Financial Statements
(1)The Consolidated Financial Statements, together with the reports of the independent auditors thereon dated February 24, 2022, are included as part of Item 8, Financial Statements and Supplementary Data.
Page
(2)Financial Statement Schedules:
Included on page SCH-1 is Schedule II - Valuation and Qualifying Accounts.
(3)Exhibits:
Exhibit
Number
Description
1.1
2.1-
2.2**-
2.3-
2.4**-
2.5-
3.1-
3.2-
3.3-
4.1-
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4.2-
4.3-
4.4-
4.5-
4.6-
4.7-
4.8-
4.9-
4.10-
4.11
4.12
4.13
4.14-
4.15-
10.1*-
10.2*-
10.3*-
10.4*-
10.5*-
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10.6*-
10.7*-
10.8*-
10.9*-
10.10*-
10.11*-
10.12*-
10.13*-
10.14*-
10.15*-
10.16*-
10.17*-
10.18*-
10.19*-
10.20*-
10.21*-
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10.22*-
10.23*-
10.24*-
10.25*-
10.26*-
10.27*-
10.28*-
10.29*-
10.30*-
10.31*-
10.32*-
10.33*-
10.34*-
10.35*-
10.36*-
10.37*-
10.38*-
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10.39*-
10.40*-
10.41-
10.42-
10.43-
10.44-
10.45-
10.46-
21-
22-
23.1-
23.2-
23.3-
24-
31.1-
31.2-
32.1-
32.2-
95-
96.1-
96.2-
96.3-
96.4-
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101-101.INSXBRL Instance - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCHXBRL Taxonomy Extension Schema
101.CALXBRL Taxonomy Extension Calculation
101.DEFXBRL Taxonomy Extension Definition
101.LABXBRL Taxonomy Extension Labels
101.PREXBRL Taxonomy Extension Presentation
104Cover Page Interactive Data File (embedded within the XBRL document)

*These exhibits relate to executive compensation plans and arrangements.
**    Certain schedules are omitted pursuant to item 601(b) (2) of Regulation S-K. Registrant agrees to furnish supplementally any omitted schedules to the SEC upon request.
***    Portions of this exhibit have been redacted pursuant to Item 601(b) (10) of Regulation S-K. Registrant agrees to furnish supplementally an unedited copy of the exhibit to the SEC upon request.

ITEM 16.       FORM 10-K SUMMARY
None.
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SIGNATURES
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this Annual Report on Form 10-K to be signed on its behalf by the undersigned, thereunto duly authorized.
NEWMONT CORPORATION
By:/s/ NANCY LIPSON
Nancy Lipson
Executive Vice President and General Counsel
February 24, 2022
Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities indicated on February 24, 2022.
SignatureTitle
 *
President, Chief Executive Officer and Director
Thomas R. Palmer(Principal Executive Officer)
*Executive Vice President and Chief Financial Officer
Nancy K. Buese(Principal Financial Officer)
*Vice President, Controller and Chief Accounting Officer
Brian C. Tabolt(Principal Accounting Officer)
Patrick G. Awuah, Jr.*Director
Gregory H. Boyce*Non-Executive Chair
Bruce R. Brook*Director
Maura J. Clark*Director
Matthew Coon Come*Director
Emma FitzGerald*Director
Mary Laschinger*Director
José Manuel Madero*Director
René Médori*Director
Jane Nelson*Director
Julio M. Quintana*Director
Susan N. Story*Director
*By:/s/ NANCY LIPSON
Nancy Lipson
Attorney-in-Fact

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SCHEDULE II-VALUATION AND QUALIFYING ACCOUNTS
Year Ended December 31,
202120202019
(in millions)
Deferred Income Tax Valuation Allowance
Balance at beginning of year$3,418 $3,112 $2,994 
Additions due to acquisition of Goldcorp— 86 521 
Additions to deferred income tax expense769 372 97 
Reduction of deferred income tax expense(350)(186)(392)
Re-classification to Assets Held for Sale— (371)
Additions and reductions reflected in other components of the financial statements(46)34 263 
Balance at end of year$3,791 $3,418 $3,112 
Refer to Note 12 of the Consolidated Financial Statements for additional information.
SCH- 2

Exhibit 4.12

DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12
OF THE SECURITIES EXCHANGE ACT OF 1934

As of the date of the Annual Report on Form 10-K of which this exhibit is part, Newmont Corporation (“We”, “Newmont” or the “Company”) has one class of securities registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”): our common stock, $1.60 par value per share (“Common Stock”).

DESCRIPTION OF CAPITAL STOCK

The rights of our stockholders are governed by the applicable provisions of the Delaware General Corporation Law (the "DGCL"), our Certificate of Incorporation and our By-Laws. The following is a summary of the material terms of our capital stock. For additional information regarding our capital stock, please refer to the applicable provisions of the DGCL, our Certificate of Incorporation and our By-Laws.

At December 31, 2021, we had 1,285,000,000 shares of authorized capital stock. Those shares consisted of:

1,280,000,000 shares of Common Stock, of which 792,452,213 shares were outstanding; and
5,000,000 shares of preferred stock, par value $5.00 per share, none of which is issued and outstanding.

Common Stock

The following is a summary of the terms of our Common Stock. For additional information regarding our Common Stock, please refer to our Certificate of Incorporation, our By-Laws and the applicable provisions of the DGCL.

Dividend Rights

Holders of our Common Stock may receive dividends when, as and if declared by our Board of Directors out of funds of Newmont legally available for the payment of dividends. Subject to the terms of any outstanding preferred stock, holders of our Common Stock may not receive dividends until we have satisfied our obligations to any holders of our preferred stock.

As a Delaware corporation, we may pay dividends out of our surplus capital or, if there is no surplus capital, out of our net profits for the fiscal year in which a dividend is declared and/or the preceding fiscal year. Section 170 of the DGCL also provides that dividends may not be paid out of net profits if, after the payment of the dividend, capital is less than the capital represented by the outstanding stock of all classes having a preference upon the distribution of assets.

Currently, we pay dividends on our Common Stock each quarter. The declaration and payment of future dividends remains at the discretion of the Board of Directors and will depend on the Company's financial results, cash requirements, future prospects and other factors deemed relevant by the Board of Directors.

Voting and Other Rights

Holders of our Common Stock are entitled to one vote per share and, in general, a majority of votes cast with respect to a matter will be sufficient to authorize action upon routine matters.

The holders of record of a majority of the outstanding shares of our capital stock entitled to vote at the meeting of our stockholders must be present in person or represented by proxy at the meeting in order to constitute a quorum for all matters to come before the meeting.

Special meetings of our stockholders may be called by our Board of Directors or by the Chair of the Board or by our President, and will be called by the Chair of the Board or by our President or Secretary upon a written request stating the purposes of the proposed meeting and signed by a majority of our Board of Directors or stockholders owning at least 25% of our outstanding capital stock entitled to vote at the meeting.
Written notice of a meeting of our stockholders is given personally, by mail, or other means of electronic transmission not less than 10 days nor more than 60 days before the date on which the meeting is held, to each stockholder of record entitled to vote at the meeting. The notice must state the time, place and purposes of the meeting. In the event of a special meeting called upon the written request of our stockholders, the notice will describe any business set forth in the statement of purpose in the written stockholder request, as well as any additional business that our Board of Directors proposes to be conducted at the meeting. If mailed, the notice will be sent to our stockholders at their respective addresses appearing on our stock records or to such other addresses as they may designate in writing, and will be deemed given when mailed. A waiver of any notice, in writing by a stockholder or by electronic transmission given by the person or persons entitled to such notice before or after the time for the meeting, will be deemed equivalent to that stockholder having received the notice.

1




Our Board of Directors is not classified. Directors are to be elected by a majority of the votes cast by stockholders entitled to vote thereon at a duly held meeting of stockholders at which a quorum is present, and our stockholders do not have the right to cumulate their votes in the election of directors.

Liquidation

In the event of any liquidation, dissolution or winding up of Newmont, holders of our Common Stock would be entitled to receive proportionately any assets legally available for distribution to our stockholders with respect to shares held by them, subject to any prior rights of the holders of any of our preferred stock then outstanding.

Redemption

Our Common Stock is not redeemable or convertible.

Other Provisions

All of the issued and outstanding shares of our Common Stock are validly issued, fully paid and nonassessable. Holders of our Common Stock have no preemptive rights with respect to any of our securities.

Listing

Our Common Stock trades on the New York Stock Exchange under the symbol “NEM.” Computershare Investor Service Inc. is the registrar, transfer agent and dividend disbursing agent for our Common Stock. Our Common Stock also trades on the Torronto Stock Exchange under the symbol “NGT.”

Preferred Stock—General

The applicable prospectus supplement relating to the particular series of preferred stock and any related depositary shares to be offered will describe the specific terms of that series as fixed by our Board of Directors, including, as applicable:

voting rights,
designations,
dividend rate,
redemption rights,
liquidation rights,
sinking fund or purchase fund provisions,
conversion or exchange rights,
any other preferences, relative participating and option or other special rights, and qualifications, limitations and restrictions that are not inconsistent with the terms of our restated certificate of incorporation, including any restriction on the repurchase or redemption while we are in arrears in the payment of dividends or sinking fund installments.
Anti-Takeover Provisions

Article Ninth of our Certificate of Incorporation may make it more difficult for various corporations, entities or persons to acquire control of us or to remove management.
Article Ninth of our Certificate of Incorporation requires us to get the approval of the holders of 80% of all classes of our capital stock who are entitled to vote in elections of directors, voting together as one class, to enter into the following types of transactions:

a merger or consolidation between us and another corporation that holds 10% or more of our outstanding shares;
the sale or lease of all or a substantial part of our assets to another corporation or entity that holds 10% or more of our outstanding shares; or
any sale or lease to us of assets worth more than $10 million in exchange for our securities by another corporation or entity that holds 10% or more of our outstanding shares.
However, Article Ninth does not apply to any transaction if:

our Board of Directors approves the transaction before the other corporation, person or entity becomes a holder of 10% or more of our outstanding shares; or
we or our subsidiaries own a majority of the outstanding voting shares of the other corporation.
Article Ninth can be altered or repealed only with the approval of the holders of 80% of all classes of our capital stock who are entitled to vote in elections of directors, voting together as one class.
2



EXHIBIT 21
NEWMONT CORPORATION AND SUBSIDIARIES
As of January 31, 2022
NameIncorporationOwnership*
Newmont CorporationDelaware, USA
Goldcorp Inc.Delaware, USA100%
1144963 B.C. Ltd.British Columbia100%
North American Metals Corp.British Columbia52.9083%
Administradora de Negocios Mineros S.A. de C.V.Mexico>99.9999%
Goldcorp S.A. de C.V.Mexico27.8636%
Administradora de Negocios Mineros S.A. de C.V.Mexico<0.0001%
Goldcorp Faja de Plata S.A. de C.V.Mexico0.0260%
Minera Faja de Plata S.A. de C.V.Mexico99.9800%
Goldcorp Internacional S.A. de C.V.Mexico93.8597%
Goldcorp Faja de Plata S.A. de C.V.Mexico99.9740%
Goldcorp Peñasquito S.A. de C.V.Mexico>99.9999%
Minera Peñasquito S.A. De C.V.Mexico99.9856%
Goldcorp Peñasquito S.A. de C.V.Mexico<0.0001%
Minas de la Alta Pimeria S.A. de C.V.Mexico>99.9999%
Goldcorp Internacional S. A. de C.V.Mexico6.1403%
Minas de San Luis S.A. de C.V.Mexico>99.9999%
Sermineros Zacatecas S.A. de C.V.Mexico99.9800%
Servicios Administrativos Goldcorp, S.A. de C.V.Mexico>99.9999%
Minas de San Luis S.A. de C.V.Mexico<0.0001%
Servicios Administrativos Goldcorp, S.A. de C.V.Mexico<0.0001%
Goldcorp Canada Ltd.Canada Federal100%
Goldcorp (Barbados) Inc.Barbados100%
Goldcorp Aureus Inc.Barbados100%
Pueblo Viejo (Jersey) 1 LimitedJersey40%
Pueblo Viejo (Jersey) 2 LimitedJersey100%
Newmont Servicios Chile S.p.A.Chile0.0077%
Goldcorp Tesoro Inc.Barbados100%
Datawave Sciences Inc.British Virgin Islands100%
Minera Goldcorp Chile S.p.A.Chile0.1600%
NuevaUnion S.p.A.Chile11.9086%
El Morro S.p.A.Chile100%
Minera Goldcorp Chile S.p.A.Chile99.8400%
NuevaUnion S.p.A.Chile38.0914%
Goldcorp Kaminak Ltd.British Columbia100%
Goldcorp Porcupine Nominee Ltd.British Columbia100%
Newmont Goldcorp Red Lake Holdings Ltd.British Columbia100%
Red Lake Gold MinesOntario0.1000%
Red Lake Gold MinesOntario99.9000%
Goldcorp Capital CorporationBarbados100%
Minera Agua Rica Alumbrera LimitedCayman Islands18.7500%
Minera Agua Rica LLCDelaware, USA100%
Minera Alumbrera LimitedAntigua and Barbuda100%
Newmont Goldcorp Insurance Company Inc.Barbados100%
Honduras Holdings Ltd.Cayman Islands100%
Montana Exploradora de Guatemala S.A.Guatemala99%
Goldcorp Exeter Ltd.British Columbia100%
Goldcorp MC Holding S.p.A.Chile100%
Norte Abierto S.p.A.Chile34.1615%
Goldcorp Stratum Inc.Barbados100%



AC40689 LimitedCayman Islands50%
Norte Abierto S.p.A.Chile31.6770%
Newmont Servicios Chile S.p.A.Chile99.9923%
Goldcorp General Holdings Ltd.British Columbia100%
Goldcorp Global Services Inc.British Columbia100%
Goldcorp S.A. de C.V.Mexico72.1364%
Goldcorp USA Holdings Ltd.Delaware, USA100%
Goldcorp America Holdings Inc.Nevada, USA100%
Goldcorp USA Inc.Nevada, USA100%
Goldcorp USA Services Inc.Nevada, USA100%
Glamis Rand Mining CompanyNevada, USA100%
International Mineral Finance B.V.Netherlands100%
Goldcorp Holdings B.V.Netherlands100%
Goldcorp Trading B.V.Netherlands100%
Oroplata S.A.Argentina99.7450%
Mexicana Resources Inc.British Columbia100%
Minas de la Alta Pimeria S.A. de C.V.Mexico<0.0001%
Minera Faja de Plata S.A. de C.V.Mexico0.0200%
Minera Peñasquito S.A. de C.V.Mexico0.0144%
Montana Exploradora de Guatemala S.A.Guatemala1%
Peridot S.A.Guatemala2%
Sermineros de Mexico S.A. de C.V.Mexico<0.0001%
Sermineros Zacatecas S.A. de C.V.Mexico0.0200%
Minas de la Alta Pimeria S.A. de C.V.Mexico<0.0001%
MMC Acquisition LimitedOntario100%
Newmont Goldcorp Integrated Services Inc.Ontario100%
Newmont Saddle Minerals Ltd.British Columbia100%
North American Metals Corp.British Columbia47.0917%
Oroplata S.A.Argentina0.2550%
Peridot S.A.Guatemala98%
Sermineros de Mexico S.A. de C.V.Mexico>99.9999%
Moydow LimitedGhana100%
Newmont LaSource SASFrance16.9251%
Newmont Ghana Gold LimitedGhana100%
Newmont Australia Pty LtdVictoria, Australia100%
Newmont AP Power Pty LtdWestern Australia100%
Newmont Boddington Pty LtdWestern Australia100%
Newmont Boddington Gold Pty LtdWestern Australia100%
Newmont Capital Pty LtdNew South Wales, Australia100%
Newmont Exploration Holdings Pty LtdQueensland, Australia100%
Newmont Exploration Pty LtdVictoria, Australia100%
Newmont Landco Pty LtdWestern Australia100%
Newmont Mining Finance Pty LtdAustralian Capital Territory100%
Newmont Mining Holdings Pty LtdSouth Australia100%
Newmont Gold Pty LtdWestern Australia100%
Newmont NGL Holdings Pty LtdNorthern Territory, Australia100%
Newmont Pacific Energy Pty LtdWestern Australia100%
Newmont Mining Services Pty LtdWestern Australia100%
Newmont Tanami Pty LtdWestern Australia100%
Newmont Woodcutters Pty LtdNew South Wales, Australia100%
Newmont Yandal Operations Pty LtdVictoria, Australia100%
Newmont Canada FN Holdings ULCBritish Columbia<.0001%
Newmont Capital LimitedNevada, USA100%
Miramar Gold CorporationNevada, USA100%
Newmont Indonesia, LLCDelaware, USA100%
NVL (USA) LimitedDelaware, USA100%
Orcana Resources Inc.Nevada, USA100%



Talapoosa Mining Inc.Nevada, USA100%
Newmont CC&V Mining CorporationDelaware, USA100%
Cripple Creek & Victor Gold Mining Company LLCColorado, USA99.9000%
The LeClair Consolidated Mines CompanyColorado, USA100%
The Matoa Gold Mining CompanyWyoming, USA100%
GCGC LLCColorado, USA100%
Cripple Creek & Victor Gold Mining Company LLCColorado, USA0.1000%
Newmont FH B.V.Netherlands100%
Newmont Canada Holdings ULCBritish Columbia100%
Newmont Golden Ridge LimitedGhana100%
Newmont Holdings ULCNova Scotia100%
Minera La Zanja S.R.L.Peru46.9407%
Newmont Canada FN Holdings ULCBritish Columbia99.9846%
Miramar Northern Mining Ltd.British Columbia100%
Con Exploration Ltd.British Columbia100%
Miramar HBG Inc.Quebec100%
Newmont Canada CorporationNova Scotia100%
Hemlo Gold Mines (Ghana) LimitedGhana100%
Newmont Canada FN Holdings ULCBritish Columbia0.0154%
PT Newmont Minahasa RayaIndonesia80%
Newmont Galore Creek Holdings CorporationBritish Columbia100%
Galore Creek PartnershipBritish Columbia50%
Galore Creek Mining CorporationBritish Columbia100%
NeXtech Drilling Ltd.Alberta100%
Newmont LaSource SASFrance83.0749%
Newmont Nusa Tenggara Holdings B.V.Netherlands100%
Newmont Suriname, LLCDelaware, USA100%
Suriname Gold Project CVSuriname75%
Newmont USA LimitedDelaware, USA100%
Battle Mountain Resources Inc.Nevada, USA100%
Dawn Mining Company LLCDelaware, USA58.1855%
Elko Land and Livestock CompanyNevada, USA100%
ELLC Grazing Membership LLCNevada, USA100%
Empresa Minera Maria SRLBolivia75.4286%
Fronteer Development (USA) LLCDelaware, USA100%
Fronteer Development LLCDelaware, USA100%
Fronteer Royalty LLCDelaware, USA100%
Nevada Eagle Resources LLCNevada, USA100%
Hospah Holdings CompanyDelaware, USA100%
Idarado Mining CompanyDelaware, USA80.1674%
Minera BMGNevada, USA100%
Minera Choluteca S.A. de C.V.Honduras48%
Minera Newmont (Chile) LimitadaChile99.3827%
Nevada Gold Mines LLCDelaware, USA38.5000%
Nevada Gold Energy LLCDelaware, USA100.0000%
Newmont Australia Investment LimitedDelaware, USA100%
Newmont Bolivia LimitedNevada, USA100%
Newmont de Mexico, S.A. de C.V.Mexico>99.9999%
Minera Oro Valenciana, S.A.P.I. de C.V.Mexico49%
Newmont Global Employment Limited PartnershipBermuda99%
Newmont Gold CompanyDelaware, USA100%
Newmont GTR LLCNevada, USA100%
Newmont Indonesia Investment LimitedDelaware, USA100%
Newmont International Services LimitedDelaware, USA100%
Newmont Global Employment Limited PartnershipBermuda1%
PT Newmont Pacific NusantaraIndonesia1%
Newmont Latin America LimitedDelaware, USA100%



Minera Los Tapados S.A.Peru0.0134%
Minera Newmont (Chile) LimitadaChile0.6173%
Newmont de Mexico S.A. de C.V.Mexico<0.0001%
Newmont McCoy Cove LimitedNevada, USA100%
Newmont North America Exploration LimitedDelaware, USA100%
Newmont Overseas Exploration LimitedDelaware, USA100%
Minera Monte Aguila S.A.SColombia50%
PT Newmont Pacific NusantaraIndonesia99%
Takari Mining SASFrance50%
Newmont Peru LimitedDelaware, USA100%
Minera Los Tapados S.A.Peru99.9866%
Newmont Investment Holdings LLCDelaware, USA100%
Newmont Peru S.R.L.Peru<.0001%
Newmont Peru S.R.L.Peru>99.9999%
Minera Chaupiloma Dos de Cajamarca S.R.L.Peru40%
Minera Ninobamba S.R.L.Peru60%
Newmont Realty CompanyDelaware, USA100%
Newmont Second Capital CorporationDelaware, USA100%
Minera Yanacocha S.R.L.**Peru51.3500%
Newmont Mines LimitedDelaware, USA100%
Newmont Technologies LimitedNevada, USA100%
New Verde Mines LLCDelaware, USA100%
Resurrection Mining CompanyDelaware, USA100%
San Juan Basin Holdings CompanyDelaware, USA100%
Santa Fe Pacific Gold CorporationDelaware, USA100%
Newmont Ventures LimitedDelaware, USA100%
EMH (BVI) Inc.British Virgin Islands100%
Marien Mining Company, S.A.Haiti99.9750%
NVL Haiti Limited S.A.Haiti0.0500%
Newmont (Guyana) IncorporatedGuyana100%
NVL Argentina S.R.L.Argentina90.0344%
NVL Haiti Limited S.A.Haiti99.9500%
Marien Mining Company, S.A.Haiti0.0250%
NVL PNG LimitedPapua New Guinea100%
NVL Solomon Islands LimitedSolomon Islands100%
Saddleback Investments Pty LtdWestern Australia100%
Normandy Overseas Holding Company Sdn BhdMalaysia100%
Normandy Company (Malaysia) Sdn BhdMalaysia100%
NVL Argentina S.R.L.Argentina9.9656%
Pittston Nevada Gold Company, Ltd.Nevada, USA100%
West Pequop Project LLCNevada, USA100%
Pequop Exploration LLCNevada, USA100%

* Ownership percentages relate to that of the entity directly above, with indentation used to reflect intermediary levels of ownership. Note that this exhibit is as of January 31, 2022, and does not reflect subsequent changes in ownership.

**On February 8, 2022, with the closing of the acquisition of Buenaventura's 43.65% interest in Minera Yanacocha S.R.L., the Company's interest increased to 95%. See Note 1 of the Consolidated Financial Statements of the Form 10-K for additional information.






Exhibit 22
Guarantor Subsidiary of Newmont Corporation

The following subsidiary of Newmont Corporation (the "Company") was, as of December 31, 2021, guarantor of the Company's (i) 3.700% Senior Notes due 2023, (ii) 2.800% Senior Notes due 2029, (iii) 2.250% Senior Notes due 2030, (iv) 2.600% Sustainability-Linked Senior Notes due 2032; (v) 5.875% Senior Notes due 2035, (vi) 6.250% Senior Notes due 2039, (vii) 4.875% Senior Notes due 2042, and (viii) 5.450% Senior Notes due 2044:
Name Incorporation
Newmont USA Limited Delaware

1

Exhibit 23.1
Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the following Registration Statements:   

1)Registration Statements (Form S-8 Nos. 333-64795, 333-04161, 333-118693 and 333-38178) pertaining to the Newmont Mining Corporation 1996 Employees Stock Plan;
2)Registration Statement (Form S-8 No. 333-75993) pertaining to the Newmont Mining Corporation 1999 Employees Stock Plan;
3)Registration Statements (Form S-8 Nos. 333-124653 and 333-171298) pertaining to the Newmont Mining Corporation 2005 Stock Incentive Plan;
4)Registration Statements (Form S-8 Nos. 333-188128 and 333-214662) pertaining to the Newmont Mining Corporation 2013 Stock Incentive Plan;
5)Registration Statement (Form S-8 No. 333-140819), pertaining to the Newmont Mining Corporation Savings Equalization Plan of Newmont;
6)Registration Statement (Form S-8 No. 333-232143), pertaining to the Goldcorp Inc. Amended and Restated 2005 Stock Option Plan;
7)Registration Statement (Form S-4 No. 333-232446), of Newmont Goldcorp Corporation;
8)Registration Statement (Form S-8 No. 333-238048), pertaining to the Newmont Corporation 2020 Stock Incentive Compensation Plan; and
9)Registration Statement (Form S-3 No. 333-258097), pertaining to the Newmont Corporation 2021 Automatic Shelf Registration Statement;
of our reports dated February 24, 2022, with respect to the consolidated financial statements and schedule of Newmont Corporation and the effectiveness of internal control over financial reporting of Newmont Corporation included in this Annual Report (Form 10-K) of Newmont Corporation for the year ended December 31, 2021.

/s/ Ernst & Young LLP

Denver, Colorado
February 24, 2022



Exhibit 23.2
Consent of Independent Registered Public Accounting Firm
We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos. 333-238048, 333-64795, 333-04161, 333-118693, 333-38178, 333-75993, 333-124653, 333-171298, 333-188128, 333-214662, 333-140819), Form S-3 (No.333-258097) and Form S-4 (No. 333-232446) of Newmont Corporation, and Form S-8 No. (333-232143) of Newmont Goldcorp Corporation (now referred to as Newmont Corporation) of our report dated February 24, 2022 relating to the consolidated financial statements and the effectiveness of internal control over financial reporting of Nevada Gold Mines LLC, which appears in this Form 10-K of Newmont Corporation.

/s/ PricewaterhouseCoopers LLP


Chartered Professional Accountants, Licensed Public Accountants
Toronto, Canada
February 24, 2022
PricewaterhouseCoopers LLP
PwC Tower, 18 York Street, Suite 2600, Toronto, Ontario, Canada M5J 0B2
T: +1 416 863 1133, F: +1 416 365 8215, www.pwc.com/ca

“PwC” refers to PricewaterhouseCoopers LLP, an Ontario limited liability partnership.



Exhibit 23.3


CONSENT OF QUALIFIED PERSON

I, Mr. Donald Doe, in connection with the Annual Report on Form 10-K for the year ended December 31, 2021 and any amendments or supplements and/or exhibits thereto (collectively, the Form 10-K), consent to:

the filing and use of the technical report summaries for Peñasquito, Boddington, Ahafo and Nevada operations, each with an effective date of December 31, 2021, as exhibits 96.1, 96.2, 96.3 and 96.4, respectively, (each a “Technical Report Summary” and collectively, the “Technical Report Summaries”) to and referenced in the Form 10-K;
the use of and references to my name, including my status as an expert or “qualified person” (as defined in Subpart 1300 of Regulation S-K promulgated by the U.S. Securities and Exchange Commission), in connection with the Form 10-K and any such Technical Report Summary; and
the use of information derived, summarized, quoted or referenced from the Technical Report Summaries, or portions thereof, that was prepared by me, that I supervised the preparation of and/or that was reviewed and approved by me, that is included or incorporated by reference in the Form 10-K.

I am the qualified person responsible for authoring for the Technical Report Summaries.

I also consent to the incorporation by reference in Registration Statements on Form S-8 (Nos. 333-238048, 333-64795, 333-04161, 333-118693, 333-38178, 333-75993, 333-124653, 333-171298, 333-188128, 333-214662, 333-140819, 333-232143), Form S-3 (No.333-258097) and Form S-4 (No. 333-232446) of Newmont Corporation of the above items as included in the Form 10-K.

Dated February 24, 2022

/s/ Donald Doe
Name:Donald Doe, RM SME
Title:
Group Executive, Reserves
Newmont Corporation





Exhibit 24

POWER OF ATTORNEY

KNOW ALL PERSONS BY THESE PRESENT, that each person whose signature appears below hereby constitutes and appoints Nancy Lipson and Logan H. Hennessey, each of them acting individually, his or her true and lawful attorney-in-fact and agent, with full power of substitution and revocation, in his or her name and on his or her behalf, to do any and all acts and things and to execute any and all instruments which said attorney-in-fact and agent may deem necessary or advisable to enable Newmont Corporation to comply with the Securities Exchange Act of 1934, as amended (the “Act”), and any rules, regulations or requirements of the Securities and Exchange Commission in respect thereof, including, without limitation, the power and authority to sign his or her name in any and all capacities (including his or her capacity as an Officer of Newmont Corporation) to the Annual Report on Form 10-K of Newmont Corporation for the fiscal year ended December 31, 2021 and any amendments thereto and the undersigned hereby ratifies and confirms all that said attorney-in-fact and agent shall lawfully do or cause to be done by virtue hereof.

IN WITNESS WHEREOF, the undersigned have subscribed these presents as of the 24th day of February 2022.



Signature    Title
/s/ Thomas R. PalmerDirector and Chief Executive Officer
Thomas R. Palmer(Principal Executive Officer)
/s/ Nancy K. BueseExecutive Vice President and Chief Financial
Nancy K. BueseOfficer
(Principal Financial Officer)
/s/ Brian C. TaboltVice President, Controller and Chief
Brian C. TaboltAccounting Officer
(Principal Accounting Officer)
/s/ Patrick G. AwuahDirector
Patrick G. Awuah
/s/ Gregory H. BoyceNon-Executive Chair
Gregory H. Boyce
/s/ Bruce R. BrookDirector
Bruce R. Brook
/s/ Maura J. ClarkDirector
Maura J. Clark
/s/ Matthew Coon ComeDirector
Matthew Coon Come
/s/ Emma FitzGeraldDirector
Emma FitzGerald
/s/ Mary LaschingerDirector
Mary Laschinger



/s/ José Manuel MaderoDirector
José Manuel Madero
/s/ René MédoriDirector
René Médori
/s/ Jane NelsonDirector
Jane Nelson
/s/ Julio M. QuintanaDirector
Julio M. Quintana
/s/ Susan M. StoryDirector
Susan M. Story


Exhibit 31.1
CERTIFICATION OF PRINCIPAL EXECUTIVE OFFICER
(Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002)
I, Thomas R. Palmer, certify that:
1.I have reviewed this Annual Report on Form 10-K of Newmont Corporation;
2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
/s/ THOMAS R PALMER
Thomas R. Palmer
Chief Executive Officer
(Principal Executive Officer)
February 24, 2022

Exhibit 31.2
CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER
(Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002)
I, Nancy K. Buese, certify that:
1.I have reviewed this Annual Report on Form 10-K of Newmont Corporation;
2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;
3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;
4.The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:
(a)Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;
(b)Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;
(c)Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and
(d)Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and
5.The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):
(a)All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and
(b)Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.
/s/ NANCY K. BUESE
Nancy K. Buese
Chief Financial Officer
(Principal Financial Officer)
February 24, 2022

Exhibit 32.1
CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350
(Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002)
In connection with the Annual Report on Form 10-K for the year ended December 31, 2021 of Newmont Corporation (the “Company”) as filed with the Securities and Exchange Commission on the date hereof (the “Report”) and pursuant to 18. U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, I, Thomas R. Palmer, Chief Executive Officer of the Company, certify, that to my knowledge:
1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and
2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
/s/ THOMAS R. PALMER
Thomas R.  Palmer
Chief Executive Officer
(Principal Executive Officer)
February 24, 2022
Note: A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.

Exhibit 32.2
CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350
(Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002)
In connection with the Annual Report on Form 10-K for the year ended December 31, 2021 of Newmont Corporation (the “Company”) as filed with the Securities and Exchange Commission on the date hereof (the “Report”) and pursuant to 18. U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, I, Nancy K. Buese, Chief Financial Officer of the Company, certify, that to my knowledge:
1.The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and
2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.
/s/ NANCY K. BUESE
Nancy K. Buese
Chief Financial Officer
(Principal Financial Officer)
February 24, 2022
Note: A signed original of this written statement required by Section 906 has been provided to the Company and will be retained by the Company and furnished to the Securities and Exchange Commission or its staff upon request.


Exhibit 95

Mine Safety Disclosure
The following disclosures are provided pursuant to the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Act”) and Item 104 of Regulation S-K, which require certain disclosures by companies required to file periodic reports under the Securities Exchange Act of 1934, as amended, that operate mines regulated under the Federal Mine Safety and Health Act of 1977 (the “Mine Act”). The disclosures reflect our U.S. mining operations only as the requirements of the Act and Item 104 of Regulation S-K do not apply to our mines operated outside the United States.
Mine Safety Information. Whenever the Federal Mine Safety and Health Administration (“MSHA”) believes a violation of the Mine Act, any health or safety standard or any regulation has occurred, it may issue a citation which describes the alleged violation and fixes a time within which the U.S. mining operator (e.g. our subsidiary, Newmont USA Limited) must abate the alleged violation. In some situations, such as when MSHA believes that conditions pose a hazard to miners, MSHA may issue an order removing miners from the area of the mine affected by the condition until the alleged hazards are corrected. When MSHA issues a citation or order, it generally proposes a civil penalty, or fine, as a result of the alleged violation, that the operator is ordered to pay. Citations and orders can be contested and appealed, and as part of that process, are often reduced in severity and amount, and are sometimes dismissed. The number of citations, orders and proposed assessments vary depending on the size and type (underground or surface) of the mine as well as by the MSHA inspector(s) assigned. In addition to civil penalties, the Mine Act also provides for criminal penalties for an operator who willfully violates a health or safety standard or knowingly violates or fails or refuses to comply with an order issued under Section 107(a) or any final decision issued under the Act.

The below table reflects citations and orders issued to us by MSHA during the year ended December 31, 2021. The proposed assessments for the year ended December 31, 2021 were taken from the MSHA data retrieval system as of January 10, 2022. 
Additional information about the Act and MSHA references used in the table follows.
Section 104(a) Significant and Substantial ("S&S") Citations: Citations received from MSHA under section 104(a) of the Mine Act for violations of mandatory health or safety standards that could significantly and substantially contribute to the cause and effect of a mine safety or health hazard.
Section 104(b) Orders: Orders issued by MSHA under section 104(b) of the Mine Act, which represents a failure to abate a citation under section 104(a) within the period of time prescribed by MSHA. This results in an order of immediate withdrawal from the area of the mine affected by the condition until MSHA determines that the violation has been abated.
Section 104(d) S&S Citations and Orders: Citations and orders issued by MSHA under section 104(d) of the Mine Act for unwarrantable failure to comply with mandatory, significant and substantial health or safety standards.
Section 110(b)(2) Violations: Flagrant violations issued by MSHA under section 110(b)(2) of the Mine Act.
Section 107(a) Orders: Orders issued by MSHA under section 107(a) of the Mine Act for situations in which MSHA determined an “imminent danger” (as defined by MSHA) existed.
Mine (1)
Section 104(a) S&S Citations (2)
Section 104(b) Orders
Section 104(d) S&S Citations and Orders (2)
Section 110(b) ViolationsSection 107(a) Orders
($ in millions) Proposed MSHA Assessments (3)
Fatalities
Cripple Creek & Victor— — — — $— — 
TOTAL3     $  
____________________________
(1)The definition of a mine under section 3 of the Mine Act includes the mine, as well as other items used in, or to be used in, or resulting from, the work of extracting minerals, such as land, structures, facilities, equipment, machines, tools, and minerals preparation facilities. Unless otherwise indicated, any of these other items associated with a single mine have been aggregated in the totals for that mine. MSHA assigns an identification number to each mine and may or may not assign separate identification numbers to related facilities such as preparation facilities. We are providing the information in the table by mine rather than MSHA identification number because that is how we manage and operate our mining business and we believe this presentation will be more useful to investors than providing information based on MSHA identification numbers.
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(2)0 Section 104(a) S&S Citations and 0 Section 104(d) S&S Citations and Orders were subject to contest as of December 31, 2021.  
(3)Represents the total dollar value of the proposed assessment from MSHA under the Mine Act pursuant to the citations and or orders preceding such dollar value in the corresponding row. No proposed assessments of the orders or citations listed above had yet been posted to the MSHA data retrieval system or made available to the Company by MSHA as of January 10, 2022. Proposed assessments amounted to $0 for the quarter. 
Pattern or Potential Pattern of Violations. During the year ended December 31, 2021, none of the mines operated by us received written notice from MSHA of (a) a pattern of violations of mandatory health or safety standards that are of such nature as could have significantly and substantially contributed to the cause and effect of mine health or safety hazards under section 104(e) of the Mine Act or (b) the potential to have such a pattern.
Pending Legal Actions. The following table reflects pending legal actions before the Federal Mine Safety and Health Review Commission (the “Commission”), an independent adjudicative agency that provides administrative trial and appellate review of legal disputes arising under the Mine Act, as of December 31, 2021, together with the number of legal actions instituted and the number of legal actions resolved during the year ended December 31, 2021.
Mine (1)
Pending Legal Actions as of December 31, 2021(2)
Legal Actions Instituted during the year ended December 31, 2021
Legal Actions Resolved during the year ended December 31, 2021
Cripple Creek & Victor— — — 
TOTAL   
____________________________
(1)The definition of a mine under section 3 of the Mine Act includes the mine, as well as other items used in, or to be used in, or resulting from, the work of extracting minerals, such as land, structures, facilities, equipment, machines, tools and minerals preparation facilities. Unless otherwise indicated, any of these other items associated with a single mine have been aggregated in the totals for that mine. MSHA assigns an identification number to each mine and may or may not assign separate identification numbers to related facilities such as preparation facilities. We are providing the information in the table by mine rather than MSHA identification number because that is how we manage and operate our mining business and we believe this presentation will be more useful to investors than providing information based on MSHA identification numbers.
(2)The foregoing list includes legal actions which were initiated prior to the current reporting period and which do not necessarily relate to citations, orders or proposed assessments issued by MSHA during the year ended December 31, 2021. The number of legal actions noted above are reported on a per docket basis.
Legal actions pending before the Commission may involve, among other questions, challenges by operators to citations, orders and penalties they have received from MSHA or complaints of discrimination by miners under section 105 of the Mine Act. The following is a brief description of the types of legal actions that may be brought before the Commission.
Contests of Citations and Orders: A contest proceeding may be filed with the Commission by operators, miners or miners’ representatives to challenge the issuance of a citation or order issued by MSHA.
Contests of Proposed Penalties (Petitions for Assessment of Penalties): A contest of a proposed penalty is an administrative proceeding before the Commission challenging a civil penalty that MSHA has proposed for the alleged violation contained in a citation or order. The validity of the citation may also be challenged in this proceeding as well.
Complaints for Compensation: A complaint for compensation may be filed with the Commission by miners entitled to compensation when a mine is closed by certain withdrawal orders issued by MSHA. The purpose of the proceeding is to determine the amount of compensation, if any, due miners idled by the orders.
Complaints of Discharge, Discrimination or Interference: A discrimination proceeding is a case that involves a miner’s allegation that he or she has suffered a wrong by the operator because he or she engaged in some type of activity protected under the Mine Act, such as making a safety complaint.
Applications for Temporary Relief: An application for temporary relief from any modification or termination of any order or from any order issued under section 104 of the Mine Act.
Appeals of Judges’ Decisions or Orders to the Commission: A filing with the Commission of a petition for discretionary review of a Judge’s decision or order by a person who has been adversely affected or aggrieved by such decision or order.
2


The following table reflects the types of legal actions pending before the Commission as of December 31, 2021.
Mine (1)
Contests of Citations and Orders
Contests of Proposed Penalties (2)
Complaints for CompensationComplaints of Discharge, Discrimination or InterferenceApplications for Temporary ReliefAppeals of Judges' Decisions or Orders to the Commission
Cripple Creek & Victor— — — — — — 
TOTAL  —  —  
____________________________
(1)The definition of a mine under section 3 of the Mine Act includes the mine, as well as other items used in, or to be used in, or resulting from, the work of extracting minerals, such as land, structures, facilities, equipment, machines, tools and minerals preparation facilities. Unless otherwise indicated, any of these other items associated with a single mine have been aggregated in the totals for that mine. MSHA assigns an identification number to each mine and may or may not assign separate identification numbers to related facilities such as preparation facilities. We are providing the information in the table by mine rather than MSHA identification number because that is how we manage and operate our mining business and we believe this presentation will be more useful to investors than providing information based on MSHA identification numbers.
(2)The number of contests of proposed penalties noted above is reported on a per docket basis. In some cases, an individual docket may include more than one type of legal action. If presented on a per citation basis the number of contests of proposed penalties would be Cripple Creek & Victor: none.
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Peñasquito Operations
Mexico
Technical Report Summary
Report current as of:
December 31, 2021
Qualified Person:
Mr. Donald Doe, RM SME.

Peñasquito Operations
Mexico
Technical Report Summary
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NOTE REGARDING FORWARD-LOOKING INFORMATION
This Technical Report Summary contains forward-looking statements within the meaning of the U.S. Securities Act of 1933 and the U.S. Securities Exchange Act of 1934 (and the equivalent under Canadian securities laws), that are intended to be covered by the safe harbor created by such sections. Such forward-looking statements include, without limitation, statements regarding Newmont’s expectation for its mines and any related development or expansions, including estimated cash flows, production, revenue, EBITDA, costs, taxes, capital, rates of return, mine plans, material mined and processed, recoveries and grade, future mineralization, future adjustments and sensitivities and other statements that are not historical facts.
Forward-looking statements address activities, events, or developments that Newmont expects or anticipates will or may occur in the future and are based on current expectations and assumptions. Although Newmont’s management believes that its expectations are based on reasonable assumptions, it can give no assurance that these expectations will prove correct. Such assumptions, include, but are not limited to: (i) there being no significant change to current geotechnical, metallurgical, hydrological and other physical conditions; (ii) permitting, development, operations and expansion of operations and projects being consistent with current expectations and mine plans, including, without limitation, receipt of export approvals; (iii) political developments in any jurisdiction in which Newmont operates being consistent with its current expectations; (iv) certain exchange rate assumptions being approximately consistent with current levels; (v) certain price assumptions for gold, copper, silver, zinc, lead and oil; (vi) prices for key supplies being approximately consistent with current levels; and (vii) other planning assumptions.
Important factors that could cause actual results to differ materially from those in the forward-looking statements include, among others, risks that estimates of mineral reserves and mineral resources are uncertain and the volume and grade of ore actually recovered may vary from our estimates, risks relating to fluctuations in metal prices; risks due to the inherently hazardous nature of mining-related activities; risks related to the jurisdictions in which we operate, uncertainties due to health and safety considerations, including COVID-19, uncertainties related to environmental considerations, including, without limitation, climate change, uncertainties relating to obtaining approvals and permits, including renewals, from governmental regulatory authorities; and uncertainties related to changes in law; as well as those factors discussed in Newmont’s filings with the U.S. Securities and Exchange Commission, including Newmont’s latest Annual Report on Form 10-K for the period ended December 31, 2021, which is available on newmont.com.
Newmont does not undertake any obligation to release publicly revisions to any “forward-looking statement,” including, without limitation, outlook, to reflect events or circumstances after the date of this document, or to reflect the occurrence of unanticipated events, except as may be required under applicable securities laws. Investors should not assume that any lack of update to a previously issued “forward-looking statement” constitutes a reaffirmation of that statement. Continued reliance on “forward-looking statements” is at investors’ own risk.
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CONTENTS
1.0    SUMMARY
1.4    Ownership
1.7    History
1.21.1    Risks
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3.8    Royalties
4.3    Climate
5.0    HISTORY
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7.2    Drilling
7.2.3    Logging
7.2.6    Downhole Surveys
7.4.2    Models
8.1.1    RC
8.1.2    Core
8.6    Analysis
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Mexico
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8.8    Database
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14.3.1    Energy
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22.6    History
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22.20.1    Risks
25.3    Markets
TABLES
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Mexico
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FIGURES
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Mexico
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1.0    SUMMARY
1.1    Introduction
This technical report summary (the Report) was prepared for Newmont Corporation (Newmont) on the Peñasquito Operations (Peñasquito Operations or the Project) located in Zacatecas State, Mexico.
The operating entity is an indirectly wholly-owned Newmont subsidiary, Minera Peñasquito S.A. de C.V. (Minera Peñasquito). For the purpose of this Report, “Newmont” is used interchangeably to refer to the parent and the fully-owned subsidiary companies in Mexico.
1.2    Terms of Reference
The Report was prepared to be attached as an exhibit to support mineral property disclosure, including mineral resource and mineral reserve estimates, for the Peñasquito Operations in Newmont’s Form 10-K for the year ending December 31, 2021.
Mineral resources and mineral reserves are reported for the Peñasco and Chile Colorado deposits. Mineral reserves are also estimated for material in stockpiles.
Open pit mining commenced in 2010, and commercial production was reached during 2011. The open pit feeds a sulfide concentrator (mill).
Unless otherwise indicated, all financial values are reported in United States dollars (US$). Unless otherwise indicated, the metric system is used in this report for mineral resources and mineral reserves and associated financials. Mineral resources and mineral reserves are reported using the definitions in Regulation S–K 1300 (SK1300), under Item 1300. The Report uses US English. The Report contains forward-looking information; refer to the note regarding forward-looking information at the front of the Report.
1.3    Property Setting
The Peñasquito Operations are situated in the western half of the Concepción Del Oro district in the northeast corner of Zacatecas State, Mexico, approximately 200 km northeast of the city of Zacatecas. There are two main access routes, the first via a turnoff from Highway 54 onto the State La Pardita road, then onto the Mazapil to Cedros State road. The mine entrance is approximately 10 km after turning northeast onto the Cedros access road. The second is via the Salaverna by-pass road from Highway 54 approximately 25 km south of Concepcion Del Oro. The Salaverna by-pass is a purpose-built gravel road that eliminates steep switchback sections of cobblestone road just west of Concepción Del Oro and passes the town of Mazapil. From Mazapil, this is a well-maintained 12 km gravel road that accesses the mine main gate. There is a private airport on site and commercial airports in the cities of Saltillo, Zacatecas and Monterrey.
The climate is generally dry with precipitation being limited for the most part to a rainy season in the months of June and July. Mining operations are conducted year-round.
The terrain is generally flat, with some rolling hills. The prevailing elevation is approximately 1,900 m above sea level. Vegetation is principally scrub, with cactus and coarse grasses.
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1.4    Ownership
The Peñasquito Operations is indirectly 100% held by Newmont through its subsidiary Minera Peñasquito.
1.5    Mineral Tenure, Surface Rights, Water Rights, Royalties and Agreements
Newmont currently holds 77 mining concessions (approximately 82,632 ha). The mining operations are within the Las Peñas, Alfa, La Peña and El Peñasquito concessions. As per Mexican requirements for grant of tenure, the concessions comprising the Project were surveyed by a licensed surveyor. Duty payments for the concessions have been made as required.
Surface rights in the vicinity of the Chile Colorado and Peñasco open pits are held by four ejidos: Ejido Cedros, Ejido Mazapil, Ejido El Vergel and Ejido Cerro Gordo. Newmont has entered into agreements with a number of ejidos in relation to surface rights, either for mining or exploration activities. Under current agreements with the ejidos, payments are made to the ejidos on an annual basis, in addition to certain upfront payments that have already been made. All temporary occupancy (such as land use) agreements are filed with the Public Agrarian Registry and the Public Mining Registry. All required power line and road easements have been granted.
Based on completed applications, a 4.6 Mm3 concession was obtained in August 2006 and an additional water concession of 9.1 Mm3 per year was received in early 2008. A concession title to pump 4.837 Mm3 was received in November 2008. A concession title to pump an additional 0.450 Mm3 was obtained in April 2009, and an additional 16.87 Mm3 concession title was obtained in July 2009.
On July 24, 2007, Goldcorp Inc. (a predecessor Newmont company) and Wheaton Precious Metals (Wheaton) entered into a transaction where Wheaton acquired 25% of the silver produced over the life-of mine (LOM) from the Peñasquito Operations for an upfront cash payment of US$485 million. Under this transaction, Wheaton pays Newmont a per-ounce cash payment of the lesser of US$3.90 and the prevailing market price (subject to an inflationary adjustment that commenced in 2011), for silver delivered under the contract.
A 2% net smelter return (NSR) royalty is payable to Royal Gold on production from the Chile Colorado and Peñasco deposits. The Mexican Government levies a 7.5% mining royalty that is imposed on earnings before interest, taxes, depreciation, and amortization. There is also a 0.5% environmental erosion fee payable on precious metals, based on gross revenues.
1.6    Geology and Mineralization
The deposits within the Peñasquito Operations are considered to be examples of breccia pipe deposits developed as a result of intrusion-related hydrothermal activity.
The regional geology of the project area is dominated by Mesozoic sedimentary rocks, which are intruded by Tertiary stocks of intermediate composition (granodiorite and quartz monzonite) and overlain by Tertiary terrestrial sediments and Quaternary alluvium.
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Peñasco and Brecha Azul are funnel-shaped breccia pipes, which flare upward, and are filled with brecciated sedimentary and intrusive rocks, cut by intrusive dikes. Polymetallic mineralization is hosted by the diatreme breccias, intrusive dikes, and surrounding siltstone and sandstone units of the Cretaceous Caracol Formation.
The diatreme and sediments contain, and are surrounded by, disseminated, veinlet and vein-hosted sulfides and sulfosalts containing base metals, silver, and gold. Mineralization is breccia or dike hosted, mantos, or associated with skarns. Mineralization consists of disseminations, veinlets and veins of various combinations of medium to coarse-grained pyrite, sphalerite, galena, and argentite (Ag2S). Sulfosalts of various compositions are also abundant in places, including bournonite (PbCuSbS3), jamesonite (PbSb2S4), tetrahedrite, polybasite ((Ag,Cu)16(Sb,As)2S11), and pyrargyrite (Ag3SbS3). Stibnite (Sb2S3), rare hessite (AgTe), chalcopyrite, and molybdenite have also been identified. Telluride minerals are the main gold-bearing phase, with electrum and native gold also identified.
1.7    History
Prior to Newmont obtaining 100% interest in the Peñasquito Operations, the following companies either held an interest or performed exploration activities: Minera Kennecott SA de CV (Kennecott), Western Copper Holdings Ltd. (Western Copper), Western Silver Corporation (Western Silver), Mauricio Hochschild & Cia Ltda. (Hochschild), Glamis Gold Corporation (Glamis) and Goldcorp Inc. (Goldcorp). Work undertaken included reconnaissance geological inspections, regional-scale geochemical and geophysical surveys (including gravity, controlled source audio frequency magnetollurics, reconnaissance induced polarization, scaler induced polarization, airborne radiometrics and magnetics and ground magnetics), rotary air blast (RAB), reverse circulation (RC) and core drilling. A pre-feasibility study was undertaken in 2004, a feasibility study in 2005 and a feasibility study update in 2006. Mine construction commenced in 2007.
Newmont acquired Goldcorp in 2019, and became the Project operator. Newmont has continued mining operations, and has conducted additional metallurgical testwork, internal mining studies, and core and RC drill programs in support of mine area and regional exploration activities.
1.8    Drilling and Sampling
1.8.1    Drilling
Drilling to December 31, 2021 comprises 1,670 core holes (867,075 m), 52 RC holes with core tails (26,332 m) and 270 RC holes (42,247 m) for a total of 1,992 drill holes (935,638 m). Drilling focused on the exploration and delineation of Chile Colorado, Brecha Azul Zone and Peñasco.
Drilling that supports mineral resource and mineral reserve estimation consists of core and RC drill holes, and totals 1,647 holes for 816,195 m.
Standardized logging procedures and software are used to record geological and geotechnical information. The level of detail collected varied by drill program and operator, but generally collected lithology, alteration, mineralization, structural features, oxidation description, and vein
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types. Core recovery is good, averaging about 97%. Collar location methods included chain-and-compass, or digital global positioning system (DGPS) instruments. Downhole survey instrumentation included single shot and gyroscopic tools.
1.8.2    Hydrogeology
A combination of historical and current hydrological data, together with operating experience, govern the pit dewatering plan. There are currently two groundwater models for pit dewatering that cover the two open pits, and a regional-scale aquifer model.
Pit dewatering is undertaken using vertical, in-pit dewatering wells. Mining operations staff perform water level monitoring on observation and pumping wells.
Monitoring wells are used to track potential environmental non-compliance in the vicinity of the tailings storage facility (TSF) and heap leach pad facilities; to date, no significant issues have been identified by the monitoring programs.
1.8.3    Geotechnical
A combination of historical and current geotechnical data, together with mining experience, are used to established pit slope designs and procedures that all benches must follow. The geotechnical model for the Peñasquito Operations was defined by geotechnical drilling and logging, laboratory testwork, rock mass classification, structural analysis and stability modeling. Analytical methods are used to evaluate structural behavior of the rock mass. Third-party consultants were retained to provide the recommended pit slope guidelines.
A geotechnical events register is maintained, and incidences are logged. There is also a record of the zones of instability zones in each pit, with information such as location, key structural data, lithologies, and event type noted.
1.8.4    Sampling and Assay
RC and core drill holes were sampled at intervals of 2 m.
Bulk density values were collected primarily using the water immersion method.
Independent laboratories used for sample preparation and analysis included ALS Chemex, and Bondar Clegg (absorbed into ALS Chemex in 2001). At the time the early work was performed ALS Chemex was ISO-9000 accredited for analysis; the laboratory is currently ISO-17025 certified. Independent check laboratories included Acme Laboratories in Vancouver, which at the time held ISO-9000 accreditation, and more recently, SGS Mexico (SGS), which holds ISO/IEC 17025:2005 certification. The on-site mine laboratory is not certified and is not independent of Newmont.
Various sample preparation crushing and pulverizing protocols were used since the late 1900s, depending on the drill campaign. ALS Chemex crushed to either ≥70% or 75% passing 10 mesh (2.0 mm) and pulverized to either ≥85% or ≥95% passing 200 mesh (75 µm). The onsite laboratory crushed to ≥70% passing 10 mesh and pulverized to ≥85% passing 200 mesh (75 µm). Analytical methods also varied by campaign. Gold analyses consisted of fire assays with either atomic absorption (AA) or inductively-coupled plasma (ICP) emissions spectrometer (ES) finishes. Overlimits were assayed using fire assay with a gravimetric finish. Silver assays were
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performed using ICP-ES or ICP atomic emission spectroscopy (AES). Overlimits were assayed using fire assay with a gravimetric finish. Zinc and lead assays were reported from either ICP-AES or ICP mass spectrometer (MS) methods.
1.8.5    Quality Assurance and Quality Control
A quality assurance and quality control (QA/QC) program was in place from 2006 onward. Goldcorp, Newmont Goldcorp, and Newmont maintained a quality assurance and quality control (QA/QC) program for the Peñasquito Operations. This included regular submissions of blank, duplicate and standard reference materials (standards) in samples sent for analysis from both exploration and mine geology.
Results were and are regularly monitored. The QA/QC programs adequately address issues of precision, accuracy and contamination.
1.9    Data Verification
Newmont personnel regularly visit the laboratories that process Newmont samples to inspect sample preparation and analytical procedures.
The database that supports mineral resource and mineral reserve estimates is checked using electronic data scripts and triggers. Newmont also conducted a number of internal data verification programs since obtaining its Project interest. Newmont conducts internal audits, termed Reserve and Resource Review (3R) audits, of all its operations. The most recent Peñasquito Operations 3R audits were conducted in 2019 and 2021. The 2021 3R audit found that the Peñasquito Operations were generally adhering to Newmont’s internal standards and guidelines with respect to the estimation of mineral resources and mineral reserves.
Data verification was performed by external consultants in support of mine development and operations. These external reviews were also undertaken in support of acquisitions, support of feasibility-level studies, and in support of technical reports, producing independent assessments of the database quality.
The QP receives and reviews monthly reconciliation reports from the mine site. These reports include the industry standard reconciliation factors for tonnage, grade and metal. Through the review of these reconciliation factors the QP is able to ascertain the quality and accuracy of the data and its suitability for use in the assumptions underlying the mineral resource and mineral reserve estimates.
1.10    Metallurgical Testwork
Metallurgical testwork was conducted by a number of laboratories prior to and during early operations. Current testwork is being performed at Newmont’s internal Malozemoff Technical Facility and by independent laboratories.
Metallurgical testwork included: mineralogy; open and closed-circuit flotation; lead–copper separation flotation; pyrite flotation; bottle and column cyanide leaching; flotation kinetics and cell design parameters, flowsheet definition, and leach response with regrind size, slurry density, leaching time, reagent consumption values, and organic carbon effects; gravity-recoverable gold; hardness characterization (SMC, breakage parameter, Bond ball mill work index, drop
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weight index, rod work index, unconfined compressive strength, semi-autogenous grind (SAG) power index); and batch and pilot plant tests. These test programs were sufficient to establish the optimal processing routes for the oxide and sulfide ores, performed on mineralization that was typical of the deposits. The results obtained supported estimation of recovery factors for the various ore types.
Since the early start-up of operations, metallurgical testing was performed on a daily basis for all ores that have been feed to the mill. These daily tests have been aimed to capture the expected performance of the ore in the sulfide plant to determine in advance any change in the reagent scheme or in the impurity levels into the final concentrates. Historically, this resulted in identification of a number of different ore types. Current understanding of ore characterization and variability has simplified forecast metallurgical recovery classification to sediment and diatreme ores and the relative organic carbon content.
Samples selected for metallurgical testing during feasibility and development studies were representative of the various types and styles of mineralization within the deposit. Samples were selected from a range of locations within the deposit zones. Sufficient samples were taken so that tests were performed on sufficient sample mass.
The mineralogical complexity of the Peñasquito ores makes the development of recovery models difficult as eight elements (gold, silver, lead, zinc, copper, iron, arsenic, and antimony) are tracked through the process. Recovery models need to be sufficiently robust to allow for changes in mineralogy and plant operations, while providing reasonable predictions of concentrate quality and tonnage. LOM recovery forecasts the sulfide plant are 69% for gold, 87% for silver, 73% for lead, and 81% for zinc.
Sulfosalts can carry varying amounts of deleterious elements such as arsenic, antimony, copper and mercury. At the date of this Report, the processing plant, in particular the flotation portion of the circuit, does not separate the copper-bearing minerals from the lead minerals, so when present the sulfosalts report (primarily) to the lead concentrate. The future impact of the deleterious elements is thus highly dependent on the lead–copper ratio in ores. There is no direct effect of deleterious elements on the recovery of precious and base metals. The marketing contracts are structured to allow for small percentages of these deleterious elements to be incorporated into the final product, with any exceedances then incurring nominal penalties.
One small area of the mine was defined as containing above-average mercury grades. Due to its limited size, blending should be sufficient to minimize the impact of mercury from this area on concentrate quality.
Organic carbon has also been recognized as a deleterious element affecting the recovery of gold and the operational cost in the process plant. The carbon pre-flotation process was built to allow for removal of liberated organic carbon ahead of lead and zinc flotation and the pyrite leach plant, so that those process steps could operate in a similar fashion to operation with low-carbon ores
1.11    Mineral Resource Estimation
1.11.1    Estimation Methodology
The database supporting resource estimation contains core drilling information from numerous drilling campaigns beginning in the 1990s through to the database close-out date of 10 June,
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2021. Geological interpretations were compiled using Leapfrog software. MineSight was used for compositing and grade interpolation. Exploratory data analysis included statistical reviews and contact analysis to determine estimation domain boundaries.
Models constructed included lithology, alteration, structure, oxidation, grade shells, north–south domains, fault domains, and organic carbon.
Density was tabulated by a combination of lithology, alteration and zone. Density values may be decreased based on the presence of oxides and/or faulting within the block being estimated.
Grade caps were applied by domain and could vary. Depending on domain, gold, silver, lead, zinc, copper, arsenic, antimony and sulfur grades could be capped. No capping was applied to organic carbon or iron values. An isotropic search distance that ranged from about 50–100 m was used to constrain the extrapolation of high grades (outlier restriction) for most elements and domains. Compositing was done on 5 m intervals. Spatial variability of the grades was examined using correlograms and/or variograms.
Ordinary kriging was used to interpolate blocks, using two passes for all elements other than iron. A range of inputs were used by domain. Iron was estimated using inverse distance weighting to the second power.
Validation used Newmont-standard methods, including a combination of visual checks, swath plots, global statistical bias checks against input data, alternate estimation methods and reconciliation with historical mine/plant performance. The validation procedures indicated that the geology and resource models used are acceptable to support the mineral resource estimation.
Mineral resource classification was undertaken based primarily on drill spacing and number of drill holes used in the estimate. Mineral resources were classified as measured, indicated, and inferred. A quantitative assessment of geological risk was undertaken using Newmont-standard methods and applied on a block by block basis. Primary risks to resource quality include quantity and spacings of drill data, geological knowledge, geological interpretation and grade estimates. All identified risks are within acceptable tolerances with associated management plans.
Mineral resources considered amenable to open pit mining methods are reported within a mine design. Commodity prices used in resource estimation are based on long-term analyst and bank forecasts, supplemented with research by Newmont’s internal specialists. The estimated timeframe used for the price forecasts is the 10-year LOM that supports the mineral reserve estimates.
1.11.2    Mineral Resource Statement
Mineral resources are reported using the mineral resource definitions set out in SK1300, and are reported in situ. Mineral resources are reported exclusive of those mineral resources converted to mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
The mineral resource estimates for the Peñasquito Operations are provided as follows:
Gold: Table 1-1 (measured and indicated); Table 1-2 (inferred);
Silver: Table 1-3 (measured and indicated); Table 1-4 (inferred);
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Lead: Table 1-5 (measured and indicated); Table 1-6 (inferred);
Zinc: Table 1-7 (measured and indicated); Table 1-8 (inferred).
Table 1-1:    Measured and Indicated Mineral Resource Statement (Gold)
AreaMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Peñasquito31,4000.27280176,6000.271,500208,0000.271,780
Table 1-2:    Inferred Mineral Resource Statement (Gold)
Area
Inferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Peñasquito89,8000.41,160
Table 1-3:    Measured and Indicated Mineral Resource Statement (Silver)
AreaMeasured Mineral
Resources
Indicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Peñasquito31,40025.7125,990176,60026.36149,620208,00026.26175,610
Table 1-4:    Inferred Mineral Resource Statement (Silver)
AreaInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Peñasquito89,80028.080,840
Table 1-5:    Measured and Indicated Mineral Resource Statement (Lead)
AreaMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(% Pb)
Contained
Lead
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Pb)
Contained
Lead
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Pb)
Contained
Lead
(M lbs)
Peñasquito31,4000.29200176,6000.261,020208,0000.271,230
Table 1-6:    Inferred Mineral Resource Statement (Lead)
AreaInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(% Pb)
Contained
Lead
(M lbs)
Peñasquito89,8000.2480
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Table 1-7:    Measured and Indicated Mineral Resource Statement (Zinc)
AreaMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(% Zn)
Contained
Zinc
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Zn)
Contained
Zinc
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Zn)
Contained
Zinc
(M lbs)
Peñasquito31,4000.66460176,6000.572,230208,0000.592,690
Table 1-8:    Inferred Mineral Resource Statement (Zinc)
AreaInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(% Zn)
Contained
Zinc
(M lbs)
Peñasquito89,8000.51,070
Notes to accompany mineral resource tables:
1.Mineral resources are current as at December 31, 2021. Mineral resources are reported using the definitions in SK1300 on a 100% basis. The Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.The reference point for the mineral resources is in situ.
3.Mineral resources are reported exclusive of mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
4.Mineral resources that are potentially amenable to open pit mining methods are constrained within a designed pit . Parameters used are included in Table 11-1
5.Tonnages are metric tonnes rounded to the nearest 100,000. Gold and silver grades re rounded to the nearest 0.01 grams per tonne. Lead and zinc grade is reported as a %. Gold and silver ounces and lead and zinc pounds are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold and silver ounces are reported as troy ounces, rounded to the nearest 10,000. Lead and zinc are reported as pounds. Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”).
6.Totals may not sum due to rounding.
1.11.3    Factors That May Affect the Mineral Resource Estimate
Areas of uncertainty that may materially impact the mineral resource estimates include: changes to long-term commodity price assumptions; changes in local interpretations of mineralization geometry and continuity of mineralized zones; changes to geological shape and continuity assumptions; changes to metallurgical recovery assumptions; changes to the operating cut-off assumptions for mill feed or stockpile feed; changes to the input assumptions used to derive the conceptual open pit outlines used to constrain the estimate; changes to drill hole spacing assumptions; changes to the cut-off grades used to constrain the estimates; variations in geotechnical, hydrogeological and mining assumptions; changes to governmental regulations; changes to environmental assessments; and changes to environmental, permitting and social license assumptions.

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1.12    Mineral Reserve Estimation
1.12.1    Estimation Methodology
Measured and indicated mineral resources were converted to mineral reserves. Mineral reserves were estimated assuming open pit mining, and the use of conventional Owner-operated equipment. Mineral reserves include mineralization within the Peñasco and Chile Colorado open pits, and stockpiled material. All Inferred blocks are classified as waste in the cashflow analysis that supports mineral reserve estimation.
For mineral reserves, Newmont applies a time discount factor to the dollar value block model that is generated in the pit-limit analysis, to account for the fact that a pit will be mined over a period of years, and that the cost of waste stripping in the early years must bear the cost of the time value of money. Optimization work involved floating pit shells at a series of gold prices. The generated nested pit shells were evaluated using the reserve metal prices of US$1,200/oz for gold, US$20/oz for silver, US$0.90/lb for lead, and US$1.15/lb for zinc and an 8% discount rate. The pit shells with the highest NPV were selected for detailed engineering design work. A realistic schedule was developed in order to determine the optimal pit shell for each deposit; schedule inputs include the minimum mining width, and vertical rate of advance, mining rate and mining sequence.
The mine plan is based on a 36 Mt/a mill throughput. The schedule was developed at an NSR cut-off of US$14.61/t, incorporating processing costs, metallurgical recovery, incremental ore mining costs, process sustaining capital and TSF-related rehabilitation costs. The net revenue calculation assumes the same commodity prices as used in optimization. The assumed exchange rate for mineral reserves was 19.5 Mexican pesos per US$. Mineral reserves are reported above an NSR cut-off of US$14.61/t.
Pit designs are full crest and toe detailed designs with final ramps based on the selected optimum Whittle cones. Pit designs honor geotechnical guidelines.
Dilution and ore loss are included in the block model.
Stockpile estimates were based on mine dispatch data; the grade comes from closely-spaced blasthole sampling and tonnage sourced from truck factors. The stockpile volumes were typically updated based on monthly surveys. The average grade of the stockpiles was adjusted based on the material balance to and from the stockpile.
Mineral reserves that will be mined using open pit mining methods are reported within a mine design. Commodity prices used in mineral reserve estimation are based on long-term analyst and bank forecasts, supplemented with research by Newmont’s internal specialists. The estimated timeframe used for the price forecasts is the 10-year LOM that supports the mineral reserve estimates.
1.12.2    Mineral Reserve Statement
Mineral reserves have been classified using the mineral reserve definitions set out in SK1300 on a 100% basis. The estimates are current as at December 31, 2021. The reference point for the mineral reserve estimate is the point of delivery to the process facilities.
Mineral reserves are reported in Table 1-9. Tonnages in the table are metric tonnes.
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1.12.3    Factors That May Affect the Mineral Reserve Estimate
Areas of uncertainty that may materially impact the mineral reserve estimates include: changes to long-term metal price and exchange rate assumptions; changes to metallurgical recovery assumptions; changes to the input assumptions used to derive the pit designs applicable to the open pit mining methods used to constrain the estimates; changes to the forecast dilution and mining recovery assumptions; changes to the cut-off values applied to the estimates; variations in geotechnical (including seismicity), hydrogeological and mining method assumptions; and changes to environmental, permitting and social license assumptions.
1.13    Mining Methods
Open pit mining is conducted using conventional techniques and an Owner-operated conventional truck and shovel fleet. The Peñasco and Chile Colorado deposits are actively being mined.
The geotechnical model is based on information from geotechnical drilling and logging, laboratory test work, rock mass classification, structural analysis and stability modeling. Pit slope angles are based on inputs from third-party consultants and Newmont staff. As mining operations progress in the pit, additional geotechnical drilling and stability analysis will continue to be conducted to support optimization of the geotechnical parameters in the LOM designs.
A combination of Newmont staff and external consultants have developed the pit water management program, completed surface water studies, and estimated the life- of-mine site water balance. Management of water inflows to date have been appropriate, and no hydrological issues that could impact mining operations have been encountered.
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Table 1-9:    Mineral Reserves Statement (Gold)
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Peñasquito115,0000.612,250247,0000.514,080362,0000.546,330
Table 1-10:    Mineral Reserves Statement (Silver)
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Peñasquito115,00038.26141,460247,00031.78252,430362,00033.84393,880
Table 1-11:    Mineral Reserves Statement (Lead)
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(% Pb)
Contained
Lead
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Pb)
Contained
Lead
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Pb)
Contained
Lead
(M lbs)
Peñasquito115,0000.37940247,0000.301,640362,0000.322,580
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Table 1-12:    Mineral Reserves Statement (Zinc)
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(% Zn)
Contained
Zinc
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Zn)
Contained
Zinc
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Zn)
Contained
Zinc
(M lbs)
Peñasquito115,0000.942,380247,0000.713,870362,0000.786,250
Notes to accompany mineral reserve tables:
1.Mineral reserves current as at December 31, 2021. Mineral reserves are reported using the definitions in SK1300 on a 100% basis. he Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.The reference point for the mineral reserves is the point of delivery to the process plant.
3.Mineral reserves are confined within open pit designs. Parameters used are summarized in Table 12-1.
4.Tonnages are metric tonnes rounded to the nearest 100,000. Gold and silver grades re rounded to the nearest 0.01 grams per tonne. Lead and zinc grade is reported as a %. Gold and silver ounces and lead and zinc pounds are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold and silver ounces are reported as troy ounces, rounded to the nearest 10,000. Lead and zinc are reported as pounds. Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”).
5.Totals may not sum due to rounding.
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The Peñasquito pit has four remaining stages (Phases 6 to 9), and will be excavated to a total depth of 780 m. The Chile Colorado pit has one remaining stage (Phase 2), and will reach 461 m ultimate depth. An ore stockpiling strategy is practiced.
The remaining mine life is 10 years, with the last year, 2031, being a partial year. The open pit operations will progress at a nominal annual mining rate of 193 Mt/a until the end of 2023, subsequently decreasing to a nominal mining rate of 144 Mt/a until the end of 2027. The LOM plan assumes a nominal rate of 36 Mt/a milling to 2031.
1.14    Recovery Methods
The Peñasquito Operations currently consist of a sulfide plant that processes a maximum of 119,000 t/d of sulfide ore. The sulfide process plant design was based on a combination of metallurgical testwork, previous study designs, and previous operating experience. The design is conventional to the gold industry and has no novel parameters.
Active loading of the oxide heap leach pad ceased in 2020. The heap leach pad is being recirculated with water while closure plans are under development.
The sulfide plant consists of the following units: coarse ore stockpile; grinding (semi-autogenous grind (SAG) and ball) mills circuit; augmented feed circuit (cone crusher, pebble crusher and high-pressure grind roll (HPGR)) and carbon, lead and zinc flotation circuits.
A pyrite leach process circuit treats the zinc rougher tailing from the concentrator for recovery of residual gold and silver. The process comprises pyrite rougher and cleaner flotation, pre-cleaner concentrate regrinding, pyrite thickening, and post-cleaner regrind, agitated tank leaching, counter-current decantation, Merrill-Crowe precipitation, precious metals refining and a cyanide detoxification circuit. The pyrite leach process circuit produces doré bars.
The tertiary precious metals recovery process has not been commissioned because, as of the Report date, the organic carbon grades had not been high enough to operate this circuit. It is expected that organic carbon grades will increase after mid-2022 and the circuit will become operational from that point onward. The tertiary precious metals recovery circuit was installed to minimize precious metal lost with the carbon pre-flotation process carbon concentrate, and to indirectly recover precious metal value associated with the pyrite leach process pre-leach flotation concentrate, which will be directed to the carbon pre-treatment cleaner flotation cells. Without the tertiary precious metals recovery plant, the carbon concentrate and contained gold and silver values would be directed to tailings.
Newmont currently uses power sourced from Saavi Energia (formerly Intergen) located in San Luis de la Paz, Guanajuato as its central power grid; however, the Peñasquito Operations are still using Mexican Electricity Federal Commission infrastructure to bring the electricity from Guanajuato to Mazapil. Water is sourced from several locations: the TSF, well fields, pit dewatering wells, and process operational recycle streams. Consumables used in the processing include collectors, depressants, frothers, activators, flocculants, and zinc dust.
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1.15    Project Infrastructure
The key infrastructure to support the Peñasquito Operations mining activities envisaged in the LOM is in place. Personnel reside in an on-site accommodation complex.
Stockpile classification is based on material types that require different treatment at the mill, with three major stockpile types, organic carbon (<0.30% C), low lead (<0.20% Pb), and high lead (>0.20% Pb). The high-lead stockpile is subdivided into three types, based on gold content, which are designated low (<0.30 g/t Au), medium (>0.30–<0.49 g/t au), and high (>0.50 g/t Au).
Five WRSFs will store the LOM waste rock requirements. There is sufficient capacity in these WRSFs for LOM requirements.
Four perimeter containment structures, the north, south, east, and west dams, provide containment of the tailings at the existing TSF.
The maximum storage allowed under the current tailings dam construction plan at elevation 1907.7 masl is 383 Mt, consisting of 356 Mt of stored tailings and 27 Mt of hydraulic sand construction. This is sufficient for the current LOM plan.
The water supply for the Peñasquito Operations is obtained from groundwater in the Cedros basin, from an area known as the Torres and Vergel well field. As much water as practicable is recycled. Newmont continues to monitor the local aquifers to ensure they remain sustainable. A network of monitoring wells was established to monitor water levels and water quality.
Water management infrastructure for mine operations includes pit dewatering and mine surface water drainage infrastructure.
Power is currently supplied from the 182 MW power purchase agreement with Saavi Energia, delivered to the mine by the Mexican Federal Electricity Commission. The Federal Electricity Commission continues to provide backup power supply for both planned and unplanned shutdowns from the Saavi Energia power plant.
1.16    Environmental, Permitting and Social Considerations
1.16.1    Environmental Studies and Monitoring
Baseline and supporting environmental studies were completed to assess both pre-existing and ongoing site environmental conditions, as well as to support decision-making processes during operations start-up. Characterization studies were completed that included the following: hydrogeology and groundwater quality; aquifer assessments; surface water quality and sediment; metals toxicity and acid mine drainage studies; air and climate; noise and vibration; vegetation; wildlife; conservation area management plan; biomass and carbon fixation studies; land use and resources; and socio-economics.
Environmental monitoring is ongoing at the Project and will continue over the life of the operations. Key monitoring areas include air, water, noise, wildlife, forest resources and waste management.
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1.16.2    Closure and Reclamation Considerations
A closure and reclamation plan was prepared for the mine site, and updated in accordance with applicable laws. The cost for this plan was calculated based on the standard reclamation cost estimator (SRCE) model which is based on the Nevada State regulations.
The closure costs used in the economic analysis total US$0.8 B.
A comprehensive study is ongoing to determine potential resettlement and the associated costs involved in resettling communities close to the mine. Any such plan is subject to approval from Newmont’s senior management, and will impact future closure cost estimates.
1.16.3    Permitting
All major permits and approvals are in place to support operations. Where permits have specific terms, renewal applications are made of the relevant regulatory authority as required, prior to the end of the permit term.
Newmont monitors the regulatory regime in place at each of its operations and ensures that all permits are updated in line with any regulatory changes.
1.16.4    Social Considerations, Plans, Negotiations and Agreements
Public consultation and community assistance and development programs are ongoing.
Newmont, Ejido Cedros and Ejido Mazapil have established trust funds for locally-managed infrastructure, education and health projects. Newmont provides annual funding for these trusts. The communities around the Peñasquito mine also benefit from a number of programs and services provided, or supported, by the mine.
1.17    Markets and Contracts
Newmont has established contracts and buyers for its lead and zinc concentrate, and has a corporate internal marketing group that monitors markets for its concentrate. Together with public documents and analyst forecasts, these data support that there is a reasonable basis to assume that for the LOM plan, that the lead and zinc concentrate will be saleable at the assumed commodity pricing.
Doré is sold on the spot market, by corporate in-house marketing experts. The terms in these contracts are in line with industry standard terms and are consistent with doré sold from other operations. The doré is not subject to product specification requirements.
Newmont uses a combination of historical and current contract pricing, contract negotiations, knowledge of its key markets from a long operations production record, short-term versus long-term price forecasts prepared by Newmont’s corporate internal marketing group, public documents, and analyst forecasts when considering long-term commodity price forecasts.
Higher metal prices are used for the mineral resource estimates to ensure the mineral reserves are a sub-set of, and not constrained by, the mineral resources, in accordance with industry-accepted practice.
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The largest in-place contracts other than for product sales cover items such as bulk commodities, operational and technical services, mining and process equipment, and administrative support services. Contracts are negotiated and renewed as needed. Contract terms are typical of similar contracts in Mexico that Newmont is familiar with.
1.18    Capital Cost Estimates
Capital cost estimates are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Capital costs are based on recent prices or operating data. Capital costs include funding for infrastructure, pit dewatering, development drilling, and permitting as well as miscellaneous expenditures required to maintain production. Mobile equipment re-build/replacement schedules and fixed asset replacement and refurbishment schedules are included. Sustaining capital costs reflect current price trends.
The overall capital cost estimate for the LOM is US$1.1 B, as summarized in Table 1-13.
1.19    Operating Cost Estimates
Operating cost estimates are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Operating costs are based on actual costs seen during operations and are projected through the LOM plan. Historical costs are used as the basis for operating cost forecasts for supplies and services unless there are new contract terms for these items. Labor and energy costs are based on budgeted rates applied to headcounts and energy consumption estimates.
Operating costs for the LOM are estimated at US$7.4 B, as summarized in Table 1-14. The estimated LOM mining cost is US$2.03/t. Base processing costs are estimated at US$10.25/t. In addition, G&A costs are estimated at US$3.40/t.
1.20    Economic Analysis
1.20.1    Economic Analysis
The financial model that supports the mineral reserve declaration is a standalone model that calculates annual cash flows based on scheduled ore production, assumed processing recoveries, metal sale prices and MXN$/US$ exchange rate, projected operating and capital costs and estimated taxes.
The financial analysis is based on an after-tax discount rate of 8%. All costs and prices are in unescalated “real” dollars. The currency used to document the cash flow is US$.
All costs are based on the 2022 budget. Revenue is calculated from the recoverable metals and long-term metal price and exchange rate forecasts.
The Peñasquito Operations are subject to a federal tax of 30%, and mining tax of 7.5%.
The economic analysis assumes constant prices with no inflationary adjustments.
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The NPV8% is US$1.7 B. As the cashflows are based on existing operations where all costs are considered sunk to 1 January 2022, considerations of payback and internal rate of return are not relevant.
A summary of the financial results is provided in Table 1-15. In this table, EBITDA = earnings before interest, taxes, depreciation and amortization. The active mining operation ceases in 2031; however, closure costs are estimated to 2071.
Table 1-13:    Capital Cost Estimate
AreaUnitValue
MiningUS$ B0.3
ProcessUS$ B0.5
Site G&AUS$ B0.4
TotalUS$ b1.1
Note: Numbers have been rounded; totals may not sum due to rounding.
Table 1-14:    Operating Cost Estimate
AreaUnitValue
MiningUS$ B2.5
ProcessUS$ B3.7
G&AUS$ B1.2
TotalUS$ B7.4
Note: Numbers have been rounded; totals may not sum due to rounding.
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Table 1-15:    Cashflow Summary Table
ItemUnitValue
Metal Prices
GoldUS$/oz1,200
SilverUS$/oz20
LeadUS$/lb0.90
ZincUS$/lb1.15
Mined Ore
TonnageMtonnes362
Gold gradeg/t0.54
Silver gradeg/t33.84
Lead grade%0.32
Zinc grade%0.78
Gold ouncesMoz6.3
Silver ouncesMoz394
Lead poundsBlb2.6
Zinc poundsBlb6.2
Capital costsUS$B1.1
Costs applicable to salesUS$B8.8
Discount rate%8
Exchange rateUnited States dollar:Mexican peso
(USD:MXN)
19.5
Free cash flowUS$B2.3
Net present valueUS$B1.7
Note: Numbers have been rounded; totals may not sum due to rounding. Table 1-15 contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbor created by such sections and other applicable laws. Please refer to the note regarding forward-looking information at the front of the Report. The cash flow is only intended to demonstrate the financial viability of the Project. Investors are cautioned that the above is based upon certain assumptions which may differ from Newmont’s long-term outlook or actual financial results, including, but not limited to commodity prices, escalation assumptions and other technical inputs. For example, Table 1-15 uses the price assumptions stated in the table, including a gold commodity price assumption of US$1,200/oz, which varies significantly from current gold prices and the assumptions that Newmont uses for its long-term guidance. Please be reminded that significant variation of metal prices, costs and other key assumptions may require modifications to mine plans, models, and prospects.
1.20.2    Sensitivity Analysis
The sensitivity of the Project to changes in metal prices, exchange rate, sustaining capital costs and operating cost assumptions was tested using a range of 25% above and below the base case values (Figure 1-1).
The Project is most sensitive to metal price changes, less sensitive to changes in operating costs, and least sensitive to changes in capital costs.
The sensitivity to grade mirrors the sensitivity performed for the commodity prices and is not shown.
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1.21    Risks and Opportunities
Factors that may affect the mineral resource and mineral reserve estimates are summarized in Chapter 1.11.3 and Chapter 1.12.3.
1.21.1    Risks
The risks associated with the Peñasquito Operations are generally those expected with open pit mining operations and include the accuracy of the resource model, unexpected geological features that cause geotechnical issues, and/or operational impacts.
Other risks noted include:
Commodity price increases for key consumables such as diesel, electricity, tires and chemicals would negatively impact the stated mineral reserves and mineral resources;
Labor cost increases or productivity decreases could also impact the stated mineral reserves and mineral resources, or impact the economic analysis that supports the mineral reserves;
Geotechnical and hydrological assumptions used in mine planning are based on historical performance, and to date historical performance has been a reasonable predictor of current conditions. Any changes to the geotechnical and hydrological assumptions could affect mine planning, affect capital cost estimates if any major rehabilitation is required due to a geotechnical or hydrological event, affect operating costs due to mitigation measures that may need to be imposed, and impact the economic analysis that supports the mineral reserve estimates;
The mineral resource estimates are sensitive to metal prices. Lower metal prices require revisions to the mineral resource estimates;
Risk to assumed process recoveries if the organic carbon present cannot be successfully mitigated during processing;
While there is sufficient space within the TSF for the planned LOM operations, if mineral resources are converted to mineral reserves, additional storage capacity will be required. Any expansion of the TSF is likely to require community relocation;
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Figure 1-1:    NPV Sensitivity
pic11.jpg
Note: Figure prepared by Newmont, 2021. FCF = free cashflow; op cost = operating cost; cap cost = capital cost; NPV = net present value.
There are communities that are within the zone of influence of the TSF that can potentially be affected by control failures at the TSF. Newmont continues to study relocation options for these communities, but there is a risk that impacted stakeholders are not amenable to relocation;
While water supplies are well understood for the LOM operations, supplementary water studies would be required if additional mineral reserves are added to the LOM plan in the future;
Climate changes could impact operating costs and ability to operate;
Assumptions that the long-term reclamation and mitigation of the Peñasquito Operations can be appropriately managed within the estimated closure timeframes and closure cost estimates;
Political risk from challenges to:
Mining licenses;
Environmental permits;
Newmont’s right to operate;
Changes to assumptions as to governmental tax or royalty rates, such as taxation rate increases or new taxation or royalty imposts.
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1.21.2    Opportunities
Opportunities for the Peñasquito Operations include moving the stated mineral resources into mineral reserves through additional drilling and study work. The mineral reserves and mineral resources are based on conservative price estimates for gold, silver, lead, and zinc so upside exists, either in terms of the potential to estimate additional mineral reserves and mineral resources or improved economics should the price used for these metals be increased.
Opportunities include:
Conversion of some or all of the measured and indicated mineral resources currently reported exclusive of mineral reserves to mineral reserves, with appropriate supporting studies;
Upgrade of some or all of the inferred mineral resources to higher-confidence categories, such that better-confidence material could be used in mineral reserve estimation;
Higher metal prices than forecast could present upside sales opportunities and potentially an increase in predicted Project economics;
Newmont holds a significant ground package around the Peñasquito Operations that retains exploration potential.
1.22    Conclusions
Under the assumptions presented in this Report, the Peñasquito Operations have a positive cash flow, and mineral reserve estimates can be supported.
1.23    Recommendations
As the Peñasquito Operations are an operating mine, the QP has no material recommendations to make.
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2.0    INTRODUCTION
2.1    Introduction
This technical report summary (the Report) was prepared for Newmont Corporation (Newmont) on the Peñasquito Operations (Peñasquito Operations or the Project) located in Zacatecas State, Mexico. The location of the operations is shown in Figure 2-1.
The operating entity is an indirectly wholly-owned Newmont subsidiary, Minera Peñasquito S.A. de C.V. (Minera Peñasquito). For the purpose of this Report, “Newmont” is used interchangeably to refer to the parent and the fully owned subsidiary companies in Mexico.
The Peñasquito Operations contain the Peñasco and Chile Colorado deposits. Open pit mining commenced in 2010, and commercial production was reached during 2011. The open pit feeds a sulfide concentrator (mill).
2.2    Terms of Reference
2.2.1    Report Purpose
The Report was prepared to be attached as an exhibit to support mineral property disclosure, including mineral resource and mineral reserve estimates, for the Peñasquito Operations in Newmont’s Form 10-K for the year ending December 31, 2021.
Mineral resources and mineral reserves are reported for Peñasco and Chile Colorado. Mineral reserves are also estimated for material in stockpiles.
2.2.2    Terms of Reference
The Peñasquito Operations consist of an open pit mine. Mining commenced in 2008.
All measurement units used in this Report are metric unless otherwise noted, and currency is expressed in United States (US$) dollars as identified in the text. The Mexican currency is the peso.
Unless otherwise indicated, all financial values are reported in US$.
Unless otherwise indicated, the metric system is used in this Report.
Mineral resources and mineral reserves are reported using the definitions in Regulation S–K 1300 (SK1300), under Item 1300.
The Report uses US English.
The Report contains forward-looking information; refer to the note regarding forward-looking information at the front of the Report.
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Figure 2-1:    Project Location Planfigure2-1.jpg
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2.3    Qualified Persons
This Report was prepared by the following Newmont Qualified Person (QP):
Mr. Donald Doe, RM SME, Group Executive Reserves, Newmont.
Mr. Doe is responsible for all Report Chapters.
2.4    Site Visits and Scope of Personal Inspection
Mr. Doe visited the Peñasquito Operations most recently from October 25 to 29, 2021. During this site visit, he inspected the operating open pits, visited the core shed, and viewed the general locations planned for the additional laybacks in the mine plan. Mr. Doe also viewed the process plant and associated general site infrastructure, including the current tailings storage facility (TSF) operations.
While on site, he discussed aspects of the operation with site-based staff. These discussions included the overall approach to the mine plan, anticipated mining conditions, selection of the production target and potential options for improvement, as well as reconciliation study results. Other areas of discussion included plant operation and recovery forecasts. Mr. Doe reviewed capital and operating forecasts with site staff.
Mr. Doe also reviewed Newmont’s processes and the internal controls on those processes at the mine site with operational staff on the work flow for determining mineral resource and mineral reserve estimates, mineral process performance, production forecasts, mining costs, and waste management.
2.5    Report Date
Information in this Report is current as at December 31, 2021.
2.6    Information Sources and References
The reports and documents listed in Chapter 24 and Chapter 25 of this Report were used to support Report preparation.
2.7    Previous Technical Report Summaries
Newmont has not previously filed a technical report summary on the Project.
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3.0    PROPERTY DESCRIPTION AND LOCATION
3.1    Introduction
The Peñasquito Operations are situated in the western half of the Concepción Del Oro district in the northeast corner of Zacatecas State, Mexico, approximately 200 km northeast of the city of Zacatecas.
Project centroid co-ordinates are approximately 24°45’N latitude/101° 30’W longitude. The Peñasquito pit is located at approximately 24.645268 N latitude, -101.655332 W latitude. The Chile Colorado pit is located at 24.659521 N latitude and -101.636357W longitude.
3.2    Property and Title in Mexico
3.2.1    Mineral Title
In Mexico, mining concessions are granted by the Economy Ministry and are considered exploitation concessions with a 50-year term.
Valid mining concessions can be renewed for an additional 50-year term as long as the mine is active, and the applicant has abided by all appropriate regulations and makes the application within five years prior to the expiration date.
All concessions must be surveyed by a licensed surveyor.
Mining concessions have an annual minimum investment that must be met, an annual mining rights fee to be paid to keep the concessions effective, and compliance with environmental laws. Minimum expenditures, pursuant to Mexican regulations, may be substituted for sales of minerals from the mine for an equivalent amount.
3.2.2    Surface Rights
Surface rights in Mexico are commonly owned either by communities (ejidos) or by private owners. The Mexican Mining Law includes provisions to facilitate purchasing land required for mining activities, installations and development.
3.2.3    Water Rights
The National Water Law and associated regulations control all water use in Mexico. The Comisión Nacional del Agua (CNA) is the responsible agency. Applications are submitted to this agency indicating the annual water needs for the mine operation and the source of water to be used. The CNA grants water concessions based on water availability in the source area.
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3.3    Project Ownership
The Project is indirectly 100% held by Newmont. Newmont uses an indirectly 100% owned subsidiary, Minera Peñasquito SA de C.V. (Minera Peñasquito), as the operating entity for the mining operations.
Newmont acquired the project as part of the merger with Goldcorp in 2019.
3.4    Mineral Tenure
Newmont currently holds 77 mining concessions (approximately 82,632 ha). Claims are summarized in Table 3-1, and the claim locations are shown in Figure 3-1.
As per Mexican requirements for grant of tenure, the concessions comprising the Project were surveyed by a licensed surveyor. Duty payments for the concessions have been made as required.
The mining operations are within the Las Peñas, Alfa, La Peña and El Peñasquito concessions.
3.5    Surface Rights
Newmont has entered into agreements with a number of ejidos in relation to surface rights, either for mining or exploration activities, as summarized in Table 3-2.
Under current agreements with the ejidos, payments are made to the ejidos on an annual basis, in addition to certain upfront payments that have already been made. All temporary occupancy (such as land use) agreements are filed with the Public Agrarian Registry and the Public Mining Registry.
Surface rights in the vicinity of the Chile Colorado and Peñasco open pits are held by four ejidos: Ejido Cedros, Ejido Mazapil, Ejido El Vergel and Ejido Cerro Gordo (Figure 3-2).
Newmont entered into easement agreements with individual parcel owners for the construction and maintenance of the La Pardita–Cedros Highway, as well as easement agreements in relation to the construction and maintenance of the El Salero–Peñasquito powerline.
All required power line and road easements have been granted.
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Table 3-1:    Mineral Tenure Table
No.NameFileTitleValidityArea
(ha)
HolderMining UnitMunicipalityState
FromTo
1Ampl. A El Cobrizo007/0862516924010/27/198110/26/203128.6871MPPeñasquitoMazapilZac.
2La Negra007/008641700483/15/19823/14/203231.6127MPPeñasquitoMazapilZac.
3La Santa Cruz007/009301700493/15/19823/14/203213.5196MPPeñasquitoMazapilZac.
4Las Tres Estrellas007/014691700503/15/19823/14/20328.2248MPPeñasquitoMazapilZac.
5San Vicente321.43/9171705605/13/19825/12/20322MPPeñasquitoMazapilZac.
6La Cruz321.42/9181706786/11/19826/10/20322.9772MPPeñasquitoMazapilZac.
7El Encino321.42/9141709978/5/19825/4/203213.3792MPPeñasquitoMazapilZac.
8Santa Ana y Santa Rita321.43/10061726626/28/19846/27/20342MPPeñasquitoMazapilZac.
9La Favorita007/084201728596/29/19846/28/203421.1612MPPeñasquitoMazapilZac.
10San José321.43/106717650312/12/198512/11/20351MPPeñasquitoMazapilZac.
11El Cobrizo321.43/10311814119/18/19879/17/20371MPPeñasquitoMazapilZac.
12Morena321.1/7-1501870895/30/19905/29/204079.2102MPPeñasquitoMazapilZac.
13Rosa María321.1/7-15318819311/22/199011/21/204034.8928MPPeñasquitoMazapilZac.
14Macocozac321.43/118518861911/29/199011/28/20405MPPeñasquitoMazapilZac.
15El Coyote321.1/7-1521907794/29/19914/28/204115MPPeñasquitoMazapilZac.
16El Cármen321.1/7-15119179312/19/199112/18/204171.2921MPPeñasquitoMazapilZac.
17La Peña7/1.3/5472032646/28/19966/27/204658MPPeñasquitoMazapilZac.
18El Rayo321.43/100220413112/18/19965/30/20362MPPeñasquitoMazapilZac.
19Beta8/1.3/011372119708/18/20008/17/20502,055MPPeñasquitoMazapilZac.
20Las Peñas8/1.3/009832122909/29/20009/28/205040MPPeñasquitoMazapilZac.
21Santa María8/1.3/0099921476911/29/200111/28/20513.8534MPPeñasquitoMazapilZac.
22Paraiso093/248462154372/19/20022/18/205296.6747MPPeñasquitoMazapilZac.
23Paraiso093/248452154572/22/20022/21/205295MPPeñasquitoMazapilZac.
24Paraiso093/248472154582/22/20022/21/205275.9503MPPeñasquitoMazapilZac.
25Paraiso093/258162154682/22/20022/21/205293.007MPPeñasquitoMazapilZac.
26Mazapil 4007/138592155032/22/20022/21/20524,355MPPeñasquitoMazapilZac.
27C. del Oro 28/1.3/013772169286/5/20026/4/20521,947MPS/AgrupamtoMazapilZac.
28Mazapil 3 Frac. I007/138522170016/14/20026/13/20521,951MPPeñasquitoMazapilZac.
29Mazapil 3 Frac. II007/138522170026/14/20026/13/20521,162MPPeñasquitoMazapilZac.
30Paraiso093/257012171787/2/20027/1/205226.842MPPeñasquitoMazapilZac.
31Paraiso Frac. 1093/257012171797/2/20027/1/205212.0844MPPeñasquitoMazapilZac.
32Paraiso Frac. 2093/257012171807/2/20027/1/20522.8463MPPeñasquitoMazapilZac.
33La Blanca093/258222175777/31/20027/30/20528.6982MPPeñasquitoMazapilZac.
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No.NameFileTitleValidityArea
(ha)
HolderMining UnitMunicipalityState
FromTo
34Mazapil8/1.3/0128021840911/5/200211/4/20521,476MPPeñasquitoMazapilZac.
35Mazapil 28/1.3/0128121842011/5/200211/4/20522,397MPPeñasquitoMazapilZac.
36Los Lobos093/263722196283/26/20033/25/20539,522MPPeñasquitoMazapilZac.
37Cerro del Oro 3093/267132202797/3/20037/2/2053104.6815MPS/AgrupamtoMazapilZac.
38Mazapil 8 Frac. 1093/267352207329/30/20039/29/205377MPPeñasquitoMazapilZac.
39Mazapil 8 Frac. 2093/267352207339/30/20039/29/2053235.4514MPPeñasquitoMazapilZac.
40Mazapil 58/1/0152722091510/28/200310/27/205350MPPeñasquitoMazapilZac.
41Mazapil 68/1/0152822091610/28/200310/27/205336MPPeñasquitoMazapilZac.
42Alondra 2093/267582214162/4/20042/3/2054142.9449MPPeñasquitoMazapilZac.
43Alondra 2 Frac. 1093/267582214172/4/20042/3/2054207.9101MPPeñasquitoMazapilZac.
44Mazapil 9 Frac. 1093/267832214182/4/20042/3/205425.8394MPPeñasquitoMazapilZac.
45Mazapil 9 Frac. 2093/267832214192/4/20042/3/2054123.0907MPPeñasquitoMazapilZac.
46Mazapil 7 Frac. 1093/267342218324/2/20044/1/205466.9372MPPeñasquitoMazapilZac.
47Mazapil 7 Frac. 2093/267342218334/2/20044/1/2054224.0083MPPeñasquitoMazapilZac.
48Alondra 1093/267572218354/2/20044/1/2054238.0724MPPeñasquitoMazapilZac.
49Alondra 1 Frac. 1093/267572218364/2/20044/1/20540.8926MPPeñasquitoMazapilZac.
50Santa Olaya Frac. I093/268682227498/27/20048/26/2054130.307MPS/AgrupamtoMazapilZac.
51Santa Olaya Frac. II093/268682227508/27/20048/26/2054512.6659MPS/AgrupamtoMazapilZac.
52Mazapil 1093/2697522332712/2/200412/1/20541,074MPPeñasquitoMazapilZac.
53Puerto Rico2/1/024802237652/15/20052/14/20553,455MPPeñasquitoEl SalvadorZac.
54El Sol 2 Frac. 1093/2746222575410/21/200510/20/2055309MPPeñasquitoMazapilZac.
55El Sol 2 Frac. 2093/2746222575510/21/200510/20/20551,078MPPeñasquitoMazapilZac.
56Arco Iris093/273902265801/27/20061/26/20562,154MPPeñasquitoEl SalvadorZac.
57Mazapil 11 Frac. 1093/274612265821/27/20061/26/20561,974MPPeñasquitoMazapilZac.
58Mazapil 11 Frac. 2093/274612265831/27/20061/26/20564,536MPPeñasquitoMazapilZac.
59Mazapil 11 Frac. 3093/274612265841/27/20061/26/205625MPPeñasquitoMazapilZac.
60Segunda Reduc. Concha8/4/0005922841811/7/200011/6/205023,116MPPeñasquitoMazapilZac.
61Alfa8/4/0007222884110/11/199510/10/20451,100MPPeñasquitoMazapilZac.
62La Pinta 06093/280572297646/13/20076/12/20577,875MPPeñasquitoMazapilZac.
63Mazapil 12093/281092318475/7/20085/6/20582.1039MPPeñasquitoMazapilZac.
64El Chava093/282462318485/7/20085/6/2058200MPEl ChavaEl SalvadorZac.
65Zuloaga 3007/168652334482/25/20092/24/2059546MPZuloaga 3ParrasCoah.
66Mazapil 13093/288422344947/3/20097/2/205970.1347MPPeñasquitoMazapilZac.
67El Chava Tres007/168742356822/16/20102/15/206021.9392MPEl ChavaGaleanaN. L.
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No.NameFileTitleValidityArea
(ha)
HolderMining UnitMunicipalityState
FromTo
68Mazapil 15093/290232361175/11/20105/10/206053.4582MPZuloaga 3Melchor OcampoZac.
69Mazapil 14093/293002361185/11/20105/10/206017.401MPZuloaga 3Melchor OcampoZac.
70Mazapil 16093/293412364647/2/20107/1/206076.4234MPZuloaga 3Melchor OcampoZac.
71Martha9/6/0011523674511/29/19528/25/206012.1655MPPeñasquitoMazapilZac.
72El Peñasquito9/6/001162367466/12/19618/25/20602MPPeñasquitoMazapilZac.
73El Cardito Dos093/3226723875410/25/201110/24/20619MPPeñasquitoMazapilZac.
74Mazapil 20093/324762406886/19/20126/18/20622.9428MPZuloaga 3MazapilZac.
75El Sol Reduc93/272872429683/16/20053/15/2055709.7707MPPeñasquitoMazapilZac.
76El Cardito Reduc.2/1/024392440291/18/20051/17/20555,038MPPeñasquitoMazapilZac.
77El Sol 2 Frac. 3 Reduc8/002-
00215
24481210/21/200510/20/20551,289MPPeñasquitoMazapilZac.
Note: MP = Minera Peñasquito. Frac. = fraccione or fraction. Zac. = Zacatecas.
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Figure 3-1:    Mineral Tenure Location Plan
fig31.jpg
Note: Figure prepared by Newmont, 2021.
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Table 3-2:    Surface Rights Agreements
EjidoAgreement DateTermArea Covered by Agreement
(ha)
CedrosJune 26, 200830 years1,256.50
March 16, 200630 years4,523.58
August 15, 20205 years8,028.25
August 15, 202030 years1,888.94
MazapilJuly 17, 200630 years280.80
August 22, 200630 years1,500
November 25, 201830 years6,706
N.C.P.A.G. El VergelAugust 21, 201329 years from January 1, 2014 to December 31 2043160.10
June 29, 201530 years25.00
June 29, 201530 years25.00
June 29, 201530 years450.00
August 21, 201329 years from January 1, 2014 to December 31 2043900.15
Cerro GordoSeptember 28, 200530 years599.28
General Enrique EstradaNovember 19, 201429 years128.32
November 19, 201429 years5.35
TecolotesOctober 30, 201429 years4.53
October 30, 201429 years146.21
October 30, 201410 years28.17
El RodeoDecember 03, 201331 years129.46
December 6, 201429 years150.71
December 6, 201429 years6.94
MatamorosFebruary 01, 201430 years134.13
San Antonio del PortezueloNovember 22, 201930 years2
27,079.42
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Figure 3-2:    District Surface Rights Map
fig32.jpg
Note: Figure prepared by Newmont, 2017.
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3.6    Water Rights
Hydrogeological studies were completed and indicate that the aquifers in the Cedros Basin (the groundwater basin that hosts the Project) have sufficient available water to provide 40 Mm³ per year. The operations have received permits to pump up to 35 Mm³ of this water per year.
Based on completed applications, a 4.6 Mm3 concession was obtained in August 2006 and an additional water concession of 9.1 Mm3 per year was received in early 2008.
A concession title to pump 4.837 Mm3 was received in November 2008. A concession title to pump an additional 0.450 Mm3 was obtained in April 2009, and an additional 16.87 Mm3 concession title was obtained in July 2009.
Additional information on the Project water supply is included in Section 18.4.
3.7    Property Agreements
On 24 July 2007, Goldcorp and Wheaton Precious Metals (Wheaton) entered into a transaction where Wheaton acquired 25% of the silver produced over the life-of mine (LOM) from the Peñasquito Operations for an upfront cash payment of US$485 million.
Under this transaction, Wheaton pays Newmont a per-ounce cash payment of the lesser of US$3.90 and the prevailing market price (subject to an inflationary adjustment that commenced in 2011), for silver delivered under the contract.
3.8    Royalties
A 2% net smelter return (NSR) royalty is payable to Royal Gold on production from the Chile Colorado and Peñasco deposits.
The Mexican Government levies a 7.5% mining royalty that is imposed on earnings before interest, taxes, depreciation, and amortization.
There is also a 0.5% environmental erosion fee payable on precious based on gross revenues.
3.9    Encumbrances
There are no known encumbrances.
3.10    Permitting
Permitting and permitting conditions are discussed in Chapter 17.9 of this Report. There are no relevant permitting timelines that apply; the operations as envisaged in the LOM plan are either fully permitted, or the processes to obtain permits are well understood and similar permits have been granted to the operations in the past, such as tailings storage facility (TSF) raises.
There are no current material violations or fines as understood in the United States mining regulatory context that apply to the Peñasquito Operations.
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3.11    Significant Factors and Risks That May Affect Access, Title or Work Programs
To the extent known to the QP, there are no other significant factors and risks that may affect access, title, or the right or ability to perform work on the Project that are not discussed in this Report.
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4.0    ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE, AND PHYSIOGRAPHY
4.1    Physiography
The Project is situated in a wide valley bounded to the north by the Sierra El Mascaron and the south by the Sierra Las Bocas. The prevailing elevation is approximately 1,900 m above sea level. The terrain is generally flat, with some rolling hills.
Vegetation is principally scrub, with cactus and coarse grasses.
With the exception of one small outcrop, the Project area is covered by up to 30 m of alluvium.
4.2    Accessibility
There are two access routes to the operations:
The first is via a turnoff from Highway 54 onto the State La Pardita road, then onto the Mazapil to Cedros State road. The mine entrance is approximately 10 km after turning northeast onto the Cedros access road;
The second access is via the Salaverna by-pass road from Highway 54 approximately 25 km south of Concepcion Del Oro. The Salaverna by-pass is a purpose-built gravel road that eliminates steep switchback sections of cobblestone road just west of Concepción Del Oro and passes the town of Mazapil. From Mazapil, this is a well-maintained 12 km gravel road that accesses the mine main gate.
Within the operations area, access is primarily by gravel roads, and foot trails and tracks. The closest rail link is 100 km to the west.
There is a private airport on site and commercial airports in the cities of Saltillo, Zacatecas and Monterrey. Travel from Monterrey/Saltillo is approximately 260 km, about three hours to site. Travel from Zacatecas is approximately 275 km, about 3.5 hours to site.
4.3    Climate
Temperatures range between 30º C and 20º C in the summer and 15º C to 0º C in the winter.
The climate is generally dry with precipitation being limited for the most part to a rainy season in the months of June and July. Annual precipitation for the area is approximately 700 mm, most of which falls in the rainy season. The Project area is affected by tropical storms and hurricanes that result in short-term, high-precipitation events.
Mining operations are conducted year-round.
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4.4    Infrastructure
A skilled labor force is available in the region and surrounding mining areas of Mexico. Fuel and supplies are sourced from nearby regional centers such as Monterrey, Monclova, Saltillo and Zacatecas. Imports from the United States are sourced via Laredo.
The Peñasquito Operations currently have all infrastructure in place to support mining and processing activities (see also discussions in Chapter 13, Chapter 14, and Chapter 15 of this Report). These Report chapters also discuss water sources, electricity, personnel, and supplies.
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5.0    HISTORY
5.1    Exploration History
A summary of the exploration and development history of the Peñasquito Operations is provided in Table 5-1.
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Table 5-1:    Exploration History
YearOperatorWork Undertaken
1950s
Minera Peñoles
Excavation of a 61 m shaft with a crosscut to the old workings and completion of two drill holes.
1994–1998
Minera Kennecott SA de CV (Kennecott)
Discovery of two large mineralized diatreme breccia bodies, the Outcrop (Peñasco) and Azul Breccias.
Geochemical surveys.
Gravity, CSAMT, reconnaissance IP, scaler IP, airborne radiometrics and magnetics and ground magnetics surveys.
250 RAB drill holes (9,314 m). 72 RC and core drill holes (2 ,209 m): 23 drill holes were drilled in the Peñasco Outcrop Breccia zone, 15 drill holes at Brecha Azul, 13 drill holes at Chile Colorado, and other drill holes scattered outside these zones.
1998
Western Copper Holdings Ltd. (Western Copper)
Acquired Project from Kennecott.
9 core holes (3,185 m).
13.4 line km of Tensor CSAMT geophysical survey
2000
Minera Hochschild S.A (Hochschild)
14 core holes (4,601 m); 11 at Chile Colorado.
2000–2003
Western Copper
149 core and RC drill holes (45,916.5 m), and completion of a scoping study.
2003–2006
Western Silver Corporation (Western Silver)
Corporate name change from Western Copper to Western Silver. 480 core drill holes, including 13 metallurgical drill holes.
Scoping, pre-feasibility and feasibility studies completed.
Glamis Gold Ltd. (Glamis Gold) acquired Western Silver in May 2006; Glamis Gold was acquired by Goldcorp Inc. (Goldcorp) in November 2006.
2012
CIVIS Inc on behalf of Goldcorp
Topography surface flown on May 25, 2012; flight over the open pit area covered 16 km2 and had a resolution of 10 cm
2006–2018Goldcorp
Updated feasibility study.
Mining began in July 2007, the first doré was produced in May 2008, mechanical completion of the first mill/ flotation line (50 kt/d) as achieved in July 2009, and the first concentrates were produced and shipped in October 2009.
High-sensitivity aeromagnetic and FALCON Airborne Gravity Gradiometer system flown in 2010; 1,789 line-km of data acquired
HELITEM time domain EM helicopter survey flown in 2010–2011; 1,597 line-km of data acquired
1,143 core and RC holes drilled (542,750.49 m) for resource definition, metallurgy, geotechnical evaluation, and condemnation for infrastructure
2019Goldcorp/Newmont Mining Corp.
Corporate merger; Goldcorp Inc. became a fully owned subsidiary of Newmont Mining Corporation and its shares were delisted from stock exchanges; following transaction completion Newmont changed its name to Newmont Goldcorp Corporation. In acknowledgement of Newmont reaching 100 year history the company name was shortened to Newmont Corporation in 2020.
2019–2020
Newmont
119 holes drilled in 2019 (29,999.52 m);
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6.0    GEOLOGICAL SETTING, MINERALIZATION, AND DEPOSIT
6.1    Deposit Type
The deposits within the Peñasquito Operations are considered to be examples of breccia pipe deposits developed as a result of intrusion-related hydrothermal activity.
Such deposits are hosted in a tectonic setting of continental magmatism, well-inboard of inferred or recognized convergent plate boundaries, and which commonly contains coeval intrusions of alkalic, metaluminous calc-alkalic, and peraluminous compositions. Preferred host strata include reducing basinal sedimentary or metasedimentary rocks. Deposit locations are often controlled by graben faults and ring complexes related to cauldron development.
Deposits typically consist of mineralized, funnel-shaped, pipe-like, discordant breccia bodies and sheeted fracture zones. Mineralization is hosted by a variety of breccia types, including magmatic-hydrothermal, phreatomagmatic, hydraulic and collapse varieties. Breccia cement consists dominantly of quartz and carbonate (calcite, ankerite, siderite), with specularite and tourmaline at some deposits.
Mineralization characteristically has a low sulfide content (<5 volume %), and contains pyrite, chalcopyrite, sphalerite, galena, and pyrrhotite, with minor molybdenite, bismuthinite, tellurobismuthite and tetrahedrite, which occur either in the matrix or in rock fragments. It is typically silver-rich (gold:silver ratios of 1:10), with associated lead, zinc, copper, ± molybdenum, manganese, bismuth, tellurium, and tungsten), and a lateral (concentric) metal zoning is present at some deposits.
A sericite–quartz–carbonate–pyrite alteration assemblage and variably developed silicification is coincident with mineralized zones, grading outward into propylitic alteration. An early-stage potassium–silicate alteration locally occurs in some deposit areas.
6.2    Regional Geology
The regional geology of the project area is dominated by Mesozoic sedimentary rocks, which are intruded by Tertiary stocks of intermediate composition (granodiorite and quartz monzonite) and overlain by Tertiary terrestrial sediments and Quaternary alluvium.
The Mesozoic sedimentary rocks consist of a >2.5 km thick series of marine sediments deposited during the Jurassic and Cretaceous Periods with a 2,000 m thick sequence of carbonaceous and calcareous turbiditic siltstones and interbedded sandstones underlain by a 1,500–2,000 m thick limestone sequence. Following a period of compressional deformation, uplift, and subsequent erosion, the Mesozoic marine sediments were overlain by the Tertiary Mazapil Conglomerate.
Large granodiorite stocks are interpreted to underlie large portions of the mineralized areas within the Concepción Del Oro District, including the Peñasquito area. Slightly younger quartz–feldspar porphyries, quartz monzonite porphyries, and other feldspar-phyric intrusions occurring as dykes, sills, and stocks cut the sedimentary units. The intrusions are interpreted to have been emplaced from the late Eocene to mid-Oligocene.
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6.3    Project Geology
The Mesozoic sedimentary rocks of the Mazapil area were folded into east–west arcuate folds during the Laramide orogeny.     The end-Laramide extension was accommodated by northwest-, northeast- and north-striking faults, contemporaneous with deposition of Tertiary-aged terrestrial sediments in fault–bounded basins. Tertiary granodiorite, quartz monzonite, and quartz–feldspar porphyry bodies were intruded during this period of extension. Typically, the magmatic bodies were emplaced along anticlines and local syncline axes, and fault intersections.
The current topography reflects the underlying geology, with ranges exposing anticlines of the older Mesozoic rocks, while valleys are filled with alluvium and Tertiary sediments overlying synclinal folds in younger Mesozoic units. Tertiary stocks and batholiths are better exposed in the ranges.
Figure 6-1 is a schematic stratigraphic column for the Project area. Figure 6-2 shows the regional geology.
Two breccia pipes, Peñasco and Brecha Azul, intrude Cretaceous Caracol Formation siltstones in the center of the Mazapil valley. The Peñasco diatreme forms the principal host for known gold–silver–lead–zinc mineralization at the Peñasquito deposit. The Chile Colorado deposit comprises mineralized sedimentary rocks adjacent to the Brecha Azul diatreme.
The breccia pipes are believed to be related to quartz–feldspar porphyry stocks beneath the Peñasquito area. The current bedrock surface is estimated to be a minimum of 50 m (and possibly several hundred meters) below the original paleo-surface when the diatremes were formed.
The brecciated nature of the host rock indicates that the diatremes explosively penetrated the Mesozoic sedimentary units and it is likely that they breached the surface; however, eruption craters and ejecta aprons have since been eroded away.
Alluvium thickness averages 30–50 m at Peñasquito, and this cover obscured the diatremes. There is one small outcrop of breccia near the center of the Peñasco diatreme, rising about 5 m above the valley surface. The single outcrop near the center of the Peñasco pipe contained weak sulfide mineralization along the south and west side of the outcrop, representing the uppermost expression of much larger mineralized zones at depth.
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Figure 6-1:    Stratigraphic Column Schematic Sketch
fig61.jpgfigu61.jpg
Note: Figure from Rocha-Rocha, 2016.
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Figure 6-2:    Regional Geology Map
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Note: Figure prepared by Newmont, 2020.

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6.4    Deposit Descriptions
6.4.1    Overview
Peñasco and Brecha Azul are funnel-shaped breccia pipes, which flare upward, and are filled with brecciated sedimentary and intrusive rocks, cut by intrusive dikes.
The larger diatreme, Peñasco, has a diameter of 900 m by 800 m immediately beneath surface alluvial cover, and diatreme breccias extend to at least 1,000 m below surface. The Brecha Azul diatreme, which lies to the southeast of Peñasco, is about 500 m in diameter immediately below alluvium, and diatreme breccias also extend to at least 1,000 m below surface.
Chile Colorado is a mineralized stockwork located southwest of Brecha Azul, hosted in sediments of the Caracol Formation. It has dimensions of approximately 600 m by 400 m immediately beneath surface alluvial cover, and extends to at least 500 m below the current land surface.
Figure 6-3 is a geology plan of the diatreme area.
Polymetallic mineralization is hosted by the diatreme breccias, intrusive dikes, and surrounding siltstone and sandstone units of the Caracol Formation. The diatreme breccias are broadly classified into three units, in order of occurrence from top to bottom within the breccia column, which are determined by clast composition:
Sediment-clast breccia;
Mixed-clast breccia (sedimentary and igneous clasts);
Intrusive-clast breccia.
Sedimentary rock clasts consist of Caracol Formation siltstone and sandstone. Intrusive rock clasts are dominated by quartz–feldspar porphyry. For the purposes of the geological block model, the sediment-clast breccia (BXS), the sediment-crackle breccia (CkBx), mixed-clast breccia (BXM) and intrusion-clast breccia (BXI) are modeled as separate lithological solids.
A variety of dikes cut the breccia pipes and the immediately adjacent clastic wall-rocks. These dikes display a range of textures from porphyry breccia, to quartz–feldspar and quartz-eye porphyries, to aphanitic micro breccias. For block modelling purposes, the units are simplified into three intrusive lithologies; brecciated intrusive rocks (IBX), felsites and felsic breccias (FI/FBX), and quartz–feldspar porphyry (QFP).
6.4.2    Structure
A complex structural setting generated the structural conditions for magma ascent. When the magma encountered phreatic water, violent explosions and brecciation ensued, giving rise to the phreatomagmatic breccias.
A number of mineralized fault zones have been identified and are included as solids in the block model.
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Figure 6-3:    Deposit Geology Map
fig63.jpg
Note: Figure prepared by Newmont, 2020. Ovb = overburden; KucSlt = Kuc Caracol Formation, siltstone>sandstone; Bxi = sediment, QFP and Fi clasts/milled intrusive mixed hydrothermal breccia; Bxm: mixed sediment>intrusive clasts/milled sediment–intrusive mixed breccia; Bxs: sediment clasts/milled sediment mixed breccias; Ibx: quartz–feldspar porphyry intrusive breccia; Ft: felsite intrusive or breccia; Qfp: quartz–feldspar porphyry;
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6.4.3    Alteration
Both of the breccia pipes lie within a hydrothermal alteration shell consisting of a proximal sericite–pyrite–quartz (phyllic) alteration (QSP) assemblage, distal sericite–pyrite–quartz– calcite (QSPC) assemblage, and peripheral pyrite–calcite (PC) alteration halo.
There is an inverse relationship between degree of alteration and organic carbon in the Caracol Formation sedimentary rocks, suggesting organic carbon was mobilized or destroyed during alteration.
6.4.4    Mineralization
The diatreme and sediments contain, and are surrounded by, disseminated, veinlet and vein-hosted sulfides and sulfosalts containing base metals, silver, and gold. Mineralization is breccia or dike hosted, mantos, or associated with skarns (Figure 6-4).
Mineralization consists of disseminations, veinlets and veins of various combinations of medium to coarse-grained pyrite, sphalerite, galena, and argentite (Ag2S). Sulfosalts of various compositions are also abundant in places, including bournonite (PbCuSbS3), jamesonite (PbSb2S4), tetrahedrite, polybasite ((Ag,Cu)16(Sb,As)2S11), and pyrargyrite (Ag3SbS3). Stibnite (Sb2S3), rare hessite (AgTe), chalcopyrite, and molybdenite have also been identified. Telluride minerals are the main gold-bearing phase, with electrum and native gold also identified.
Gangue mineralogy includes calcite, sericite, and quartz, with rhodochrosite, fluorite, magnetite, hematite, garnets (grossularite–andradite) and chlorite–epidote. Carbonate is more abundant than quartz as a gangue mineral in veins and veinlets, particularly in the “crackle breccia” that occurs commonly at the diatreme margins.
6.4.4.1    Breccia- and Dike-Hosted Mineralization
Breccia-hosted mineralization is dominated by sulfide disseminations within the matrix with lesser disseminated and veinlet-controlled mineralization in clasts. All breccia types host mineralization, but the favored host is the intrusion-clast breccia. Much of the mineralization within the Peñasco and Brecha Azul pipes lie within the intrusion-clast breccia.
All of the dike varieties are locally mineralized, and they are almost always strongly altered. Mineralization of dikes occurs as breccia matrix fillings, disseminations and minor veinlet stockworks at intrusion margins, and veinlets or veins cutting the more massive dikes.
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Figure 6-4:    Deposit Types
a40.jpg
Note: Figure prepared by Newmont, 2021.
Mineralized dikes form an important ore host in the Peñasco diatreme but are not as abundant in Brecha Azul.
Mineralization of the Caracol Formation clastic sedimentary units where the units are cut by the diatremes is dominated by sulfide replacement of calcite matrix in sandstone beds and lenses and disseminated sulfides and sulfide clusters in sandstone and siltstones. Cross-cutting vein and veinlet mineralization consists of sulfide and sulfide-calcite fillings.
The Chile Colorado deposit is the largest known sediment-hosted mineralized zone, although others also occur adjacent to Peñasco (e.g., El Sotol), and between the diatremes (e.g., La Palma). El Sotol, located to the west of Peñasco, consists of small horizons mineralized with sulfides and sulfosalts, which are consistent with the stratification of the Caracol Formation.
Reforma is a northwest–southeast oriented vein system consisting of rhodochrosite, sulfides, and sulfosalts that occurs within the Chile Colorado deposit and to the south–southwest of the Peñasco breccia.
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There is a spatial association between strong QSP alteration and the highest degree of sulfide and sulfosalt mineralization. A halo of generally lower-grade disseminated zinc–lead–gold–silver mineralization lies within the QSPC assemblage surrounding the two breccia pipes.
6.4.4.2    Mantos-Style Mineralization
Mantos-style sulfide replacements of carbonate strata have been identified within and beneath the Caracol Formation adjacent to the diatreme pipes, beneath the clastic-hosted disseminated sulfide zones. They consist of semi-massive to massive sulfide replacements of sub-horizontal limestone beds, as well as structurally-controlled cross-cutting chimney-style, steeply dipping, fracture and breccia zones filled with high sulfide concentrations.
The sulfides are generally dominated by sphalerite and galena, but also contain significant pyrite. Gangue minerals (commonly carbonates) are subordinate in these strata-replacement mantos and cross-cutting chimneys. Stratiform and chimney mantos are characterized by their very high zinc, lead, and silver contents, with variable copper and gold contributions.
6.4.4.3    Skarn Mineralization
Garnet skarn-hosted copper–gold–silver–zinc–lead mineralization (carbonate replacement deposits or CRDs) within dissolution breccias was identified at depth between the Peñasco and Brecha Azul diatremes (Figure 6-4). The mineralized skarns trend northwest–southeast, and have been divided into the following zones:
CRD Upper zone: a garnet skarn hosted within the Indidura and Cuesta del Cura Formations; x, y, z dimensions of 1,500 x 600 x 450 m;
CRD Deeps zone: a garnet skarn hosted within the Taraises and La Caja Formations; x, y, z dimensions of 1,300 x 550 x 250 m.
Polymetallic mineralization is hosted by garnet skarn and associated breccias, mainly as chalcopyrite and sphalerite with some gold and silver. Gangue minerals consist of pyrite, calcite, garnet, and magnetite. The garnet skarns are often surrounded by halos of hornfels, especially in siliciclastic units, and/or marble and recrystallized limestone in carbonate units. Deep exploration programs identified quartz feldspar porphyry with strong QSPC and potassic alteration that contains occasional veinlets of quartz with molybdenite, and veins with secondary biotite and magnetite disseminated in the wall rocks.
6.5    QP Comments on “Item 7: Geological Setting and Mineralization”
The QP notes that the knowledge of the deposit setting, lithologies, mineralization style and setting, and structural and alteration controls on mineralization is sufficient to support mineral resource and mineral reserve estimation.
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7.0    EXPLORATION
7.1    Exploration
A summary of the exploration conducted is provided in Table 7-1. As there is a single small outcrop in the Project area, the primary exploration tools have been geophysics and drilling.
7.1.1    Grids and Surveys
The Project uses UTM NAD27. All data collected prior to establishment of the mining operation were converted to this datum.
Digital terrain data were supplied to Newmont by Eagle Mapping, Vancouver, Canada, from aerial photography completed 13 November 2003. Aerial photography provided a 0.24 m resolution and a vertical and horizontal accuracy of ± 1.0 m. Eagle Mapping also provided an updated topographic surface in 2008.
The last version of digital terrain data was supplied by CIVIS Inc. from photographic flights completed on 25 May 2012. The photography covering the open pit and TSF from the 2012 flights was completed with a resolution of 0.1 m.
7.1.2    Petrology, Mineralogy, and Research Studies
A doctoral thesis was completed on the deposit area in 2016:
Rocha-Rocha, M., 2016: Metallogenesis of the Penasquito polymetallic deposit: a contribution to the understanding of the magmatic ore system: PhD thesis, University of Nevada, Reno, 338 p.
7.1.3    Qualified Person’s Interpretation of the Exploration Information
The exploration programs completed to date are appropriate to the style of the deposits and prospects. Additional exploration has a likelihood of generating further exploration successes particularly as regional exploration has been limited to date.
7.1.4    Exploration Potential
Significant potential exists at depth below the current operating pits within the current diatreme bodies as well as skarn and mantos mineralization within the surrounding limestone units. Additionally, the surrounding district has relatively little exploration work completed.
Newmont is planning a staged approach at identifying potential targets with geophysical and geochemical surveys, as well as detailed mapping campaigns. This will aid in prioritizing drill targets.
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Table 7-1:    Exploration Summary Table
TypeComment/Result
Geological mapping
Mapping within the district surrounding Peñasquito is conducted at 1:5,000 scale. Information mapped includes lithology, and structural measurements. Mapping in the field is mylar using a topography base. It is then digitized using ArcMap software.
Open pit mapping
Geological mapping at 1:2,000 scale within the pit identifies lithologies and structural elements that are important for geological modeling and geotechnical considerations.
Geochemical sampling
The only original bedrock exposure at Peñasquito was on a single low hill in the center of what is now known as the Peñasco diatreme. Early explorers in the district collected rock-chip samples from this outcrop. The remainder of the operations area was covered by alluvium, generally 30–40 m thick, and surface sampling was not possible.
Airborne and ground- based magnetic surveys, airborne radiometric surveys, CSAMT and ground gravity and induced polarization (IP) surveys
The aeromagnetic survey defined an 8 km x 4 km, north–south-trending magnetic high which was approximately centered on the Outcrop (Peñasco) Breccia.
The airborne and ground magnetometer surveys suggested the presence of deep-seated granodioritic intrusions and indicated a relationship between mineralization and the underlying plutons.
Kennecott identified and defined IP chargeability and resistivity anomalies in the central Peñasquito area and the surveys were instrumental in locating the sulfide stockwork zone at the Chile Colorado.
The gravity surveys identified the Brecha Azul diatreme and partially outlined the Peñasco diatreme pipe.
Airborne magnetic surveys (Goldcorp)
Included coverage of the Peñasquito and Camino Rojo blocks, in Zacatecas State. The first survey utilized a high-sensitivity aeromagnetic and FALCON Airborne Gravity Gradiometer system. This survey was flown on November 11–19, 2010, with a total of 1,789 line-km of data being acquired.
The second survey used the HELITEM time domain EM helicopter system and was flown between December 11, 2010 and January 9, 2011 for a total of 1,597 line-km.
The two surveys approximately covered the same areas with only modest differences in the positioning of lines. Some anomalies were detected toward the north and east of the Peñasco diatreme, which require exploration follow- up. To date, no exploration has been conducted on these anomalies.
Structural interpretations
Field evaluations and data collection on the deposit structural setting was conducted in 2017. These data were used to update the structural model used in resource estimation.
Alteration interpretations
An analytical spectral device was used to collect alteration data from each mining cutback. These data were used to refine the regional alteration model to aid in exploration vectoring, particularly for Caracol Formation sediments.

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7.2    Drilling
7.2.1    Overview
7.2.1.1    Drilling on Property
Drilling to December 31, 2021 comprises 1,670 core holes (867,075 m), 52 RC holes with core tails (26,332 m) and 270 RC holes (42,247 m) for a total of 1,992 drill holes (935,638 m). A drill summary table is presented in Table 7-2. Drill collar locations are shown in Figure 7-1. Drilling focused on the exploration and delineation of Chile Colorado, Brecha Azul Zone and Peñasco.
Drilling that supports mineral resource and mineral reserve estimation consists of core and RC drill holes, and totals 1,647 holes for 816,195 m (Table 7-3). The collars of those drill holes used in mineral resource estimation are shown in Figure 7-2.
7.2.1.2    Drilling Excluded For Estimation Purposes
Fourteen drill holes (MHC-01 to MHC-14) completed by Mauricio Hochschild in the current open pit area in 2000 are excluded from estimation, because there are no assay certificates. Short (<40 m ) RC holes were not used for mineral resource estimation.
7.2.2    Drill Methods
Seven drill contractors were used over the Project duration, including Major Drilling Co (core and RC); Adviser Drilling, S.A. de C.V. (core); Layne de Mexico (RC); BDW Drilling (core); KDL Mexico SA de C.V. (core); Boart Longyear Drilling Services-Mexico (core); and Globexplore (RC).
RC drilling was conducted using down-hole hammers and tricone bits, both dry and with water injection. Water flow was rarely high enough to impact the drilling, although water had to be injected to improve sample quality. Some RC drilling was performed as pre-collars for core drill holes. Sample recoveries were not routinely recorded for RC holes.
7.2.3    Logging
Logging of RC drill cuttings and core used standard logging procedures. The level of detail collected varied by drill program and operator, but generally collected lithology, alteration, mineralization, structural features, oxidation description, and vein types.
Core is photographed.
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Table 7-2:    Drill Summary Table
YearProject OperatorCoreMixedRCTotal
Number of
Holes
Drilled
Meters
Number of
Holes
Drilled
Meters
Number of
Holes
Drilled
Meters
Number of
Holes
Drilled
Meters
1994–1997Kennecott175,3582413,602315,0757224,179
1998Western Copper93,18593,203
2000Hochschild144,601144,629
2002Western Copper4620,1984620,290
20034618,9462865555,90810325,925
2004Western Silver12659,11812659,370
200516298,33316298,657
2006192110,752192111,136
2007Goldcorp195132,366234,946218137,748
20085850,643123,2547054,037
20094722,1824722,276
20103722,1753722,249
20112114,032592,4958016,687
20128552,9918553,161
20137243,3427243,486
201412948,82512949,083
201510345,62610345,832
201611943,75439912244,097
20174313,97152,068357,1168323,321
20182610,436219,7975012,6339733,060
2019Newmont1810,16212711910,471
20204214,7194214,803
20216321,36014506421,938
Totals1,670867,0755226,33227042,2471,992939,638
Note: Metreage has been rounded; totals may not sum due to rounding. Mixed = drilling that commenced with RC and was finished using core.
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Figure 7-1:    Drill Collar Location Map
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Table 7-3:    Drill Summary Table Supporting Mineral Resource Estimates
YearProject OperatorCoreMixedRCTotal
Number of
Holes
Drilled
Meters
Number of
Holes
Drilled
Meters
Number of
Holes
Drilled
Meters
Number of
Holes
Drilled
Meters
1994–1997Kennecott175,3582413,602264,3586723,452
1998Western Copper93,18593,203
2002Western Copper4620,1984620,290
20034618,9462865465,0089425,007
2004Western Silver12458,35412458,602
200515796,33115796,645
200612483,71512483,963
2007Goldcorp133108,899234,946156114,157
20085850,643123,2547054,037
20093416,8633416,931
20103018,8713018,931
201188,806321,3654010,251
20122026,0132026,053
20137243,3427243,486
201412948,82512949,083
201510345,62610345,832
201611943,75439912244,097
2017379,62652,068357,1167718,964
20182610,436219,7975012,6339733,060
2019Newmont159,0111271169,314
20204114,4194114,501
2021196,298196,336
Totals1,367747,5195226,33222839,0501,647816,195
Note: Metreage has been rounded; totals may not sum due to rounding. Mixed = drilling that commenced with RC and was finished using core.
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Figure 7-2:    Drill Collar Location Map for Drilling Supporting Mineral Resource Estimates
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Note: Breccia pipes shown as red outlines.
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7.2.4    Recovery
Core recovery is good, averaging about 97%.
Core drilling typically recovered HQ size core (63.5 mm diameter) from surface, then was reduced to NQ size core (47.6 mm) where ground conditions warranted. Metallurgical drill holes were typically drilled using PQ size core (85 mm).
7.2.5    Collar Surveys
Prior to 2001, drill holes were located using chain-and-compass methods. From 2002 onwards, collar survey was performed by a qualified surveyor. Once mining operations commenced, all surveys have been performed using differential global positioning system (DGPS) instruments. The mine currently uses Trimble R-6 GPS instruments.
7.2.6    Downhole Surveys
Downhole surveys are completed by the drilling contractor using a single shot, through the bit, survey instrument. Drill holes are surveyed on completion of each hole as the drill rods are being pulled from the hole. All drill holes have been downhole surveyed except the 51 Western Silver RC drill holes and 11 of the 17 Kennecott drill holes. Use of gyroscopic survey instruments began in 2012, with measurements taken at 30 m intervals.
7.2.7    Grade Control
Grade control drilling was completed as part of an infill drilling program using core and RC drilling.
7.2.8    Comment on Material Results and Interpretation
Drill hole spacing is generally on 50 m sections in the main deposits, with tighter spacing for infill drilling within the Peñasco pit. Drilling on 400 m spaced sections was completed in the condemnation zones and drill spacing is wider again in the areas outside the conceptual pit outlines used to constrain mineral resources. Drilling covers an area approximately 11 km east–west by 7 km north–south with the majority of drill holes concentrated in an area 2.1 km east–west by 2.8 km north–south.
Drilling is normally perpendicular to the strike of the mineralization. Depending on the dip of the drill hole, and the dip of the mineralization, drill intercept widths are typically greater than true widths.
Drill orientations are generally appropriate for the mineralization style, and have been drilled at orientations that are optimal for the orientation of mineralization for the bulk of the deposit areas (Figure 7-3 and Figure 7-4).
Sampling is representative of the grades in the deposit area, reflecting areas of higher and lower grades.
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Figure 7-3:    Example Drill Section
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Note: Figure prepared by Newmont, 2020.
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Figure 7-4:    Example Drill Section
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Note: Figure prepared by Newmont, 2020.
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No material factors were identified with the data collection from the drill programs that could affect mineral resource or mineral reserve estimation.
7.3    Hydrogeology
Pit dewatering is undertaken using 12 vertical, in-pit dewatering wells, drilled to 1,000–1,050 m depths. The holes are 444.5 mm (17.5”) in diameter, have 305 mm (12”) steel casing and screen over the entire hole (i.e., to total depth), and are installed with electrical submersible pumps controlled by variable frequency drives.
Contingency measures have included sump and surface pumping to mitigate the presence of groundwater at the pit bottom (pit lake and pit sumps).
7.3.1    Sampling Methods and Laboratory Determinations
Mining operations staff perform water level monitoring on observation and pumping wells by means of numerous vibrating wire piezometers and pump pressure transducers.
Water monitoring sampling is conducted by the environmental department, on wells within the pit, and external wells, as well as monitoring wells upstream and downstream of the TSF and the heap leach pad facilities. Groundwater in the vicinity of the TSF and heap leach pad facilities is analyzed for environmental compliance purposes, and analysis is performed for standard water chemistry parameters on the pumping wells.
Collection of hydrological data is done by site staff, and typically includes airlift testing during RC drilling and well development, water level measurements and pumping tests from dewatering wells.
7.3.2    Groundwater Models
There are currently two groundwater models for pit dewatering that cover the two open pits. The first model was developed by Newfields in 2019, and the second, updated numerical model was prepared by Itasca in 2020.
A regional-scale aquifer model was constructed by Geomega in 2018. Work is ongoing to develop numerical models for external well fields under the supervision of the environmental department.
7.3.3    Comment on Results
A combination of historical and current hydrological data, together with operating experience, govern the pit dewatering plan.
Monitoring wells are used to track potential environmental non-compliance in the vicinity of the TSF and heap leach pad facilities; to date, no significant issues have been identified by the monitoring programs.
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7.4    Geotechnical
Geotechnical drilling was completed in support of infrastructure locations and in support of pit designs.
7.4.1    Sampling Methods and Laboratory Determinations
The geotechnical model for the Peñasquito Operations was defined by geotechnical drilling and logging, laboratory testwork, rock mass classification, structural analysis and stability modeling. Completed testwork included:
Degree of alteration;
Point load index testing;
Unconfined compressive strength testing;
Triaxial compressive strength testing;
Brazilian tensile strength testing;
Determination of Hoek-Brown material constant “mi”;
Shear strength of discontinuities;
Rock mass strength;
Shear strength anisotropy.
Rock mass rating (RMR) and Q-Barton parameters were logged for rock mass strength evaluations. Unconfined compressive strength testing was conducted by Call & Nicholas, Inc. (CNI; 2009–2015) and SRK Consulting Inc. (SRK, 2016). Additional tests included uniaxial and triaxial compressive strength testing. Rock strength index determinations from core logging resulted in a 90% ratio match or with slightly lower estimates than the unconfined compression strength determinations from the laboratory testing, indicating that core logging estimates are suitable and slightly conservative for design purposes.
Estimates of hardness, based on ISRM (1981), were collected on a run-by-run basis by Golder Associates (Golder; 2005), SRK (2016b), and Piteau Associates (Piteau; 2017, 2018).
Values for the Hoek-Brown material constant “mi” that were used by Piteau (2018) for pit designs, were derived using results from triaxial strength, unconfined compressive strength, and Brazilian tensile strength testing results. Discontinuity shear strengths were based on the results of historical laboratory direct shear testing.
CNI, Golder, SRK, and Piteau are independent third-party consultants who have specialist geotechnical testing facilities. Testing followed standard protocols for geotechnical testwork. There is no system for accreditation of geotechnical laboratories.
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7.4.2    Models
A continuum model for rock mass disturbance for phases 6D, 8, and 9 of the open pits was developed to account for the effects of blasting and stress relief on rock mass strength based on the results of yield percentage versus depth relationships from a preliminary Universal Distinct Element Code software model.
Assessment of fault, bedding shear, joint, and bedding structural sets defining shear strength anisotropy and two-dimensional (2D) anisotropic limit equilibrium stability analyses was conducted using SLIDE2 2018 software on cross sections through the Phase 9 of the open pit, incorporating the combined influence of adverse structural orientations and potential for shearing through intact rock mass; and development of bench, inter-ramp, and overall slope design criteria for the Phase 9 mine plan.
7.4.3    Monitoring
There are five displacement monitoring radars on site, three of which monitor the Peñasco pit, and two in the Chile Colorado pit. There are four robotic total station instruments, three at the Peñasco pit, and one at the Chile Colorado pit. The radars are used to monitor for issues and known problems, including displacement, old failures, bench-scale bedding plane movements, wedge slides, and material spills.
Blast vibration is monitored using Instantel blast monitoring equipment.
A geotechnical events register is maintained, and incidences are logged. There is also a record of the zones of instability zones in each pit, with information such as location, key structural data, lithologies, and event type noted.
7.4.4    Comment on Results
A combination of historical and current geotechnical data, together with mining experience, are used to established pit slope designs and procedures that all benches must follow.
Analytical methods are used to evaluate structural behavior of the rock mass.
Third-party consultants were retained to provide the recommended pit slope guidelines.
These data and mining experience support the geotechnical operating considerations used in the mine plans in Chapter 13 of this Report.
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8.0    SAMPLE PREPARATION, ANALYSES, AND SECURITY
8.1    Sampling Methods
8.1.1    RC
RC drill holes were sampled at intervals of 2 m. The drill cuttings were split at the drill into several portions of 12 kg or less. A handful of rock chips from each sample interval was collected and logged by experienced onsite geologists. Data from the drill logs were entered digitally into ASCII files, then uploaded to the Project database.
8.1.2    Core
For all core holes, the standard sample interval is 2 m. The only departures from this are the splitting of a 2 m interval into two portions at the overburden/bedrock contact, and in areas of low recovery, where multiples of 2 m are used to ensure that after splitting, a minimum 1 kg sample is obtained. In most cases this occurs in the upper portions of drill holes where significant weathering has occurred. Samples are marked on the inside of the boxes by a technician for the entire hole. For condemnation drill holes, one sample of 2 m was taken every 20 m unless geological inspection dictated otherwise.
Core is halved using saws. Half of the cut core is placed in the plastic sample bag and half remains in the boxes which are stored on shelves in several large, secure warehouses.
QA/QC materials are inserted by exploration staff in the dispatch portion of the sampling area. The bags are then tied with string and placed in rice bags, three per bag, the sample numbers are written on the rice bags, and they are stacked for shipment.
8.1.3    Grade Control
Blast hole samples for submission to the on-site laboratory are collected by the Mine Geology staff using a hand held rotary drill to collect cuttings on a pre-defined pattern from the cone of cuttings. For blast holes where there is poor recovery, a larger number of sampling points is used. Samplers try to maintain an 8 kg sample size.
8.2    Sample Security Methods
Sample security was not generally practiced at Peñasquito during the exploration drilling programs, due to the remote nature of the site. Sample security relied upon the fact that the samples were always attended or locked at the sample dispatch facility. Sample collection and transportation have always been undertaken by company or laboratory personnel using company vehicles.
Current practice is for drill core to be collected from the drill rig by Newmont employees and delivered to the secure exploration facility in the town of Mazapil, 12 km east of the mine where it is logged and sampled. Sample shipments are picked up once a week by a truck from ALS Global and taken to one of their sample preparation facilities. Formerly, samples were sent to
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Guadalajara but currently they are prepared in Zacatecas. After preparation samples are sent by air to the ALS Global analytical facility in North Vancouver, B.C for analysis.
Chain-of-custody procedures consist of filling out sample submittal forms that are sent to the laboratory with sample shipments to make certain that all samples were received by the laboratory.
After sampling, core is stored in secure facilities in Mazapil for future reference. Some core is stored on steel shelves within the secure exploration facility, and some core is stored in secure warehouses a short distance away. As far as is practicable, core is stored in numeric sequence by drill hole number and depth.
Sample rejects and pulps are returned by ALS Global to Newmont’s core shack in Mazapil for storage. Coarse rejects in plastic bags are stored in cardboard boxes on steel racks in a separate locked building and are labelled and stored by sample number. Weathering has deteriorated the integrity of individual rejects and pulps from earlier drill programs.
8.3    Density Determinations
A total of 1,229 specific gravity (SG) measurements were collected in 2008 on drill core. An additional 127 bulk density measurements are available from Dawson Metallurgical Laboratories Inc. Utah (Dawson). SG data were then used to assign average bulk specific gravity values by lithology.
Since 2011, a standard procedure was implemented, whereby a density sample consisting of un-split core (usually HQ), 20 to 30 cm in length, is taken every 50 m from core holes. Core is wax coated, and the density determined using the standard water immersion method. After testing the sample is returned to the core box.
The density database currently contains about 6,947 determinations.
8.4    Analytical and Test Laboratories
Sample preparation and analytical laboratories used for primary analyses during the exploration programs on the Project include ALS Chemex, and Bondar Clegg (absorbed into ALS Chemex in 2001). The laboratories are currently operated by ALS Global.
ALS Chemex was responsible for sample preparation throughout the Western Copper, Western Silver, and Goldcorp exploration and infill drilling phases. For much of the operations history the sample preparation facilities in Guadalajara were used; however, samples are currently prepared at the ALS Global facility in Zacatecas. The sample preparation facilities are not accredited. All prepared samples (pulps) are dispatched to the Vancouver, Canada laboratory facility for analysis. At the time the early work was performed ALS Chemex was ISO-9000 accredited for analysis; the laboratory is currently ISO-17025 certified. ALS Global is independent of Newmont.
Early check assays (umpire) analyses were performed by Acme Laboratories in Vancouver, which at the time held ISO-9000 accreditation. SGS Mexico (SGS) was used for more recent check assay analyses. SGS holds ISO/IEC 17025:2005 certification. Both Acme and SGS are independent of Newmont.
The on-site mine laboratory is not certified and is not independent of Newmont.
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8.5    Sample Preparation
Sample preparation methods for the various major sampling types is summarized in Table 8-1.
8.6    Analysis
Table 8-2 summarizes the analytical methods used, which can vary by sample type and laboratory.
Blast hole samples are analyzed by standard fire assay for gold and silver using a standard fire assay with an atomic absorption spectrometry (AA) finish. If the assay prill weighs more than 5 mg, a second assay is run with a gravimetric finish. Analysis for copper, lead, zinc, arsenic, antimony and cadmium are performed on a 1 g sample that is subject to a multi-acid digestion and determination by AA.
Systematic assays of blast hole samples for organic carbon began in June 2016, by the LECO method with hydrochloric acid digestion.
8.7    Quality Assurance and Quality Control
Goldcorp, Newmont Goldcorp, and Newmont maintained a quality assurance and quality control (QA/QC) program for the Peñasquito Operations. This included regular submissions of blank, duplicate and standard reference materials (standards) in samples sent for analysis from both exploration and mine geology. Results were regularly monitored.
8.7.1    Goldcorp (2006–2017)
During the 2006–2017 Goldcorp programs, two primary field blanks were used with Goldcorp drill samples, sourced from local materials. In general, these blanks have performed well in monitoring for contamination; however, both blanks have a number of unexplained failures that suggest the material used is occasionally weakly mineralized. One standard set was generated by Metcon Research of Tucson, Arizona on core from Peñasquito, and a second set of standards were prepared by SGS in Durango from Peñasquito open pit material. Results for the Metcon SRMs generally displayed very good assay accuracy, although there were a number of weak biases relative to the expected values, mainly weak high biases. The SGS SRMs also generally showed good assay precision but similarly show weak biases, mainly for lead and zinc. Such biases relative to expected values are not unusual. Submission of half-core duplicates indicated good assay precision.
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Table 8-1:    Sample Preparation Procedures
LaboratoryDurationSample TypePreparation Procedure
ALS Chemex (Western Copper)1998, 2002–2003RC and coreCrush to ≥70% passing 10 mesh (2.0 mm); pulverize to ≥85% passing 200 mesh (75 µm)
ALS Chemex/
ALS Global
Pre-2003RC and coreCrush to ≥75% passing 10 mesh (2.0 mm); pulverize to ≥95% passing 150 mesh (105 µm)
2003–dateRC and coreCrush to ≥70% passing 10 mesh (2.0 mm); pulverizing to ≥85% passing 200 mesh (75 µm)
On-site laboratory2010–dateGrade controlCrush to ≥70% passing 10 mesh (2.0 mm); pulverize to ≥85% passing 200 mesh (75 µm)
Table 8-2:    Analytical Methods
LaboratoryElementMethod
ALS Chemex/
ALS Global
GoldFA-AA23; fire assay on 30 g sample with AA finish. Much of data previously used ME-GRA21; fire assay with gravimetric finish on a one-assay-ton (30 g) charge. For assays >10 ppm ME- GRA21 is still used. AA became the primary analytical finish in 2010.
SilverME-ICP41; 0.5 g charge digested in aqua regia acid and analyzed via ICP-AES; for over limits, method ME-GRA21 is used, a fire assay with a gravimetric finish on a one-assay-ton charge (30 g)
ZincME-ICP41; and for over limits method Zn-OG46 is used which is 0.4 g charge digested in aqua regia acid and analyzed by ICP-AES or inductively coupled plasma – mass spectrometer ICP- MS).
LeadME-ECP41; 0.5 g charge digested in aqua regia acid and analyzed with ICP-AES; for over limits method Pb-OG46 is used
AcmeGoldGroup 6; fire assay with an inductively coupled plasma emissions spectrometer (ICPES) analytical finish on a one-assay-ton charge (30 g).
SilverGroup D; 0.5 g charge digested in aqua regia acid and analyzed with and ICP-ES; and for over limits Ag-AA46, which is 0.4-g charge digested in aqua regia acid and analyzed using ICP-ES.
Zinc
Group D; 1-g charge digested in aqua regia acid and analyzed with ICP-ES; Ag-AA46 for over limits
Lead
Group D; 0.5 g charge digested in aqua regia acid and analyzed with ICP-ES; Ag-AA46 for over limits
SGSGoldGE FAA313; 30 g fire assay with AA finish
SilverICP-14B; ICP-AES. For assays>100g/t GO FAG313; 30 g fire assay with AA finish
ZincICP14B; 0.5 g charge digested in aqua regia and analyzed with ICP-AES. ICP90q for over limits).
LeadICP14B; 0.5 g charge digested in aqua regia and analyzed with ICP-AES. ICP90q for over limits).
Note: FA = fire assay, AA = atomic absorption, ICP-AES = inductively coupled plasma atomic emission spectroscopy, ICP-OES = inductively coupled plasma optical emission spectroscopy.
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8.7.2    Newmont Goldcorp; Newmont (2017 to date)
In 2019, the insertion rates of standards was changed to 1/84 to ensure one standard was included into a fusion batch of 84 crucibles in the laboratory. Additionally, pulp and prep duplicates were introduced to monitor sample preparation performance by the laboratory. In 2021, the insertion rate of standards was changed to 1/50, because the previous insertion rate did not consider the internal laboratory QC samples. The current insertion rate of QC samples followed at Peñasquito for drill holes is:
Standard (SGS Durango): 1/50 samples;
Field duplicate: 1/50 samples;
Blank: 1/100 samples;
Pulp duplicate: 1/100 samples;
Prep duplicate: 1/100 samples.
8.7.3    Check Assays
At total of 652 pulps from the 2012–2013 drilling programs were submitted to SGS in 2014 for check assay. Results show negligible bias for gold and silver while SGS displayed weak low biases for lead and zinc relative to ALS Chemex.
8.7.4    Grade Control
Grade control sample submissions during the Goldcorp programs included field duplicates from blast holes and blanks. Assay precision as determined by the duplicates was good. The blank submitted was a local overburden that was determined in mid-2015 to have anomalous values for gold, silver, lead and zinc. A new source of blank material was identified from an area about 50 km from the mine site and is in use.
Check assays on grade control samples are sent regularly to ALS Global. ALS Global does display weak to moderate high biases relative to the mine laboratory for gold, silver, lead and zinc, mainly at higher grades for the latter two. Additional multi-element standards are being acquired for use in grade control.
After the Goldcorp merger, the ore control department adapted its QA/QC program to follow the Newmont guidelines. These consisted of the following QA/QC sample types and insertion rates:
Field duplicates at an insertion rate of 1/50 (second sample from a blast cone);
Preparation duplicates at an insertion rate of 1/30 (second sample from crusher at laboratory);
Pulp duplicates at an insertion rate of 1/30 (second sample from pulverizer at laboratory);
Standards at a frequency to obtain at least one standard per assay batch. Standards should be purchased/made to allow evaluation of laboratory performance at a range of values and especially near critical cutoff grades;
Coarse (preferred) blanks at an insertion rate of at least 1/100.
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Random laboratory visits, including site or project geologists, must be conducted and documented. The minimum requirement is annually.
Monthly meetings are conducted to discuss performance and the current work in process. Results to the Report date indicate good assay precision.
8.7.5    Mine Laboratory
The on-site laboratory uses pulp blanks in its fire assay runs and has included quartz washes in sample preparation in the past. The laboratory currently passes a blank for each batch received in the crushing and every 27 samples or less cleans the pulverizer. Results from the pulp blanks indicates no problems with contamination. Standards purchased from Rocklabs are inserted once every 30 sample assay run and show good assay accuracy. Multi-element standards were added to the program in 2016, and current results reflect good performance from the laboratory. The laboratory prepares reject duplicates every 20 samples and regularly runs pulp replicate analyses. Both show good assay precision.
The mine laboratory regularly sends pulps for check assay to ALS Global with results displaying similar high biases by ALS Global to those displayed by the grade control check assays.
The Geology department also regularly sends pulps for check assay to ALS Global. Results from ALS Global are similar to the original assays from the mine laboratory for the majority of samples that have been check-assayed.
8.8    Database
Database entry procedures historically consisted of entering data from paper logging forms into Excel files before being imported into acQuire. Geological data from early drill programs were entered into spreadsheets in a single pass. It is not known what kind of data base was used prior to 2009.
All drill data from 2007 to July 2013 was entered from paper logging forms into Excel files before being imported into acQuire. Since July 2013, logging and recording of other drill hole data by geologists and technicians has been directly into acQuire on laptop computers, with the data subsequently imported into the main database. Assays received electronically from the laboratories are imported directly into the database. Analytical certificates received since 2010 have been stored in the database and were validated via the acQuire software.
Data were verified on entry to the database by means of built-in program triggers within the mining software. Checks were performed on surveys, collar co-ordinates, lithology data, and assay data.
In February 2021, the Peñasquito exploration drill database was migrated from acQuire into the Newmont Global Exploration Database structure (GED). Newmont’s in-house applications are used to load drilling relevant data such as collar, downhole surveys, geotechnical and geological logging, samples and assays. The procedures used to manage the database are the same as used by the company globally.
Paper records are retained on file. Exploration data are appropriately stored on a mine server, and data are regularly backed up by the mine information technology (IT) department.
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8.9    Qualified Person’s Opinion on Sample Preparation, Security, and Analytical Procedures
The sample preparation, analysis, quality control, and security procedures used by the Peñasquito Operations have changed over time to meet evolving industry practices. Practices at the time the information was collected were industry-standard.
The Qualified Person is of the opinion that the sample preparation, analysis, quality control, and security procedures are sufficient to provide reliable data to support estimation of mineral resources and mineral reserves:
Drill collar data are typically verified prior to data entry into the database, by checking the drilled collar position against the planned collar position;
The sampling methods are acceptable, meet industry-standard practice, and are adequate for mineral resource and mineral reserves estimation and mine planning purposes;
The density determination procedure is consistent with industry-standard procedures. A check of the density values for lithologies across the different deposits indicates that there are no major variations in the density results;
The quality of the analytical data is reliable, and that sample preparation, analysis, and security are generally performed in accordance with exploration best practices and industry standards;
Newmont has a QA/QC program comprising blank, standard and duplicate samples. Newmont’s QA/QC submission rate meets industry-accepted standards of insertion rates. The QA/QC data support that there are no material issues with analytical precision or accuracy;
Verification is performed on all digitally-collected data on upload to the main database, and includes checks on surveys, collar co-ordinates, lithology, and assay data. The checks are appropriate, and consistent with industry standards.
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9.0    DATA VERIFICATION
9.1    Internal Data Verification
9.1.1    Data Validation
Validation checks are performed by operations personnel on data used to support estimation comprise checks on surveys, collar coordinates, lithology data (cross-checking from photographs), and assay data. Errors noted are rectified in the database.
Three different databases are in use at the mine site:
Mapinfo dataset; compiled historic assay tables in Excel, with lithology data;
Resource dataset; pre-2010 resource database with appended 2011 data manipulated in Excel from acQuire exports;
acQuire database;
Current GED database.
A review of the datasets indicated that there were some extremely high copper values especially in historic WC series drilling, and that the 2013 acQuire database might not contain a full set of historic assay records due to data loading errors during the original implementation of the acQuire system in 2008–2009. Goldcorp was provided with permission to download from the assay laboratory, the original assays from the Western Copper and Western Silver programs. Subsequently, the 2012 and 2011 drill data sets were reviewed for completeness of historic drill information, and any missing data were entered into acQuire. Comments were added to the collar information as required. All other legacy (pre-Goldcorp) data were carefully reviewed and verified by Goldcorp personnel. The revised historic assay data in the database are now considered to reflect the information in the downloaded assay certificates, and are suitable for use for exploration targeting and construction of geological models.
The following are undertaken in support of database quality:
Inspection of all laboratories are undertaken on a regular basis to ensure that they are well maintained and that all procedures are being properly followed. Deficiencies or concerns are reported to the laboratory manager;
QA/QC data is monitored closely and detailed reports are prepared on a monthly basis. Assay data needs to be approved before import in to the database;
Drill data including collar co-ordinates, down hole surveys, lithology data, and assay data are typically verified prior to mineral resource and mineral reserve estimation by running program checks in both database and resource modelling software packages.
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9.1.2    Reviews and Audits
Newmont has a policy of peer reviews of all aspects of the mineral resource estimates. Those reviews include evaluations of the database, geological models and the mineral resource estimates. The most recent reviews were performed in 2019 and 2020.
The Reserve and Resource Review or “3R” reviews examined:
Geology and geostatistics: ore control, exploration development, data collection/management, QA/QC and geological modeling;
Geotechnical and hydrological: pit slope design and execution, tailings management, heap leaching, and waste rock facilities;
Processing: metallurgical accounting; business plan inputs; risk and opportunity management;
Mine engineering: equipment productivity, costs, unitized costs for pit optimization and cut-off, Whittle inputs, pit optimization, pit designs, cut-off grades, reserves test.
No significant or critical issues were noted as a result of the 3R audits. A number of recommendations were put forward to address potential gaps and inconsistencies between legacy Goldcorp practices and Newmont’s current standards.
9.1.3    Mineral Resource and Mineral Reserve Estimates
Newmont established a system of “layered responsibility” for documenting the information supporting the mineral resource and mineral reserve estimates, describing the methods used, and ensuring the validity of the estimates. The concept of a system of “layered responsibility” is that individuals at each level within the organization assume responsibility, through a sign-off or certification process, for the work relating to preparation of mineral resource and mineral reserve estimates that they are most actively involved in. Mineral reserve and mineral resource estimates are prepared and certified by QPs at the mine site level, and are subsequently reviewed by QPs in the Newmont-designated “region”, and finally by corporate QPs based in Newmont’s Denver head office.
9.1.4    Reconciliation
Newmont staff perform a number of internal studies and reports in support of mineral resource and mineral reserve estimation. These include reconciliation studies, mineability and dilution evaluations, investigations of grade discrepancies between model assumptions and probe data, drill hole density evaluations, long-range plan reviews, and mining studies to meet internal financing criteria for project advancement.
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9.1.5    Subject Matter Expert Reviews
The QP requested that information, conclusions, and recommendations presented in the body of this Report be reviewed by Newmont experts or experts retained by Newmont in each discipline area as a further level of data verification.
Peer reviewers were requested to cross-check all numerical data, flag any data omissions or errors, review the manner in which the data were reported in the technical report summary, check the interpretations arising from the data as presented in the report, and were asked to review that the QP’s opinions stated as required in certain Report chapters were supported by the data and by Newmont’s future intentions and Project planning.
Feedback from the subject matter experts was incorporated into the Report as required.
9.2    External Data Verification
A number of third-party consultants have performed external data reviews, as summarized in Table 12-1.
These external reviews were undertaken in support of acquisitions, support of feasibility-level studies, and in support of technical reports, producing independent assessments of the database quality. No significant problems with the database, sampling protocols, flowsheets, check analysis program, or data storage were noted.
9.3    Data Verification by Qualified Person
The QP performed a site visit in October 2021 (refer to Chapter 2.4). Observations made during the visit, in conjunction with discussions with site-based technical staff also support the geological interpretations, and analytical and database quality. The QP’s personal inspection supports the use of the data in mineral resource and mineral reserve estimation, and in mine planning.
The QP’s site visit in 2021 was part of Newmont’s Reserve and Resource Review (3R) process, which requires internal reviews of all sites on a rotating basis. The 2021 3R found that Peñasquito generally meets all of Newmont’s internal standards and guidelines regarding mineral resource and mineral reserve estimation.
The QP receives and reviews monthly reconciliation reports from the mine site. These reports include the industry standard reconciliation factors for tonnage, grade and metal; F1 (reserve model compared to ore control model), F2 (mine delivered compared to mill received) and F3 (F1 x F2) along with other measures such as compliance of actual production to mine plan and polygon mining accuracy. The reconciliation factors are recorded monthly and reported in a quarterly control document. Through the review of these reconciliation factors the QP is able to ascertain the quality and accuracy of the data and its suitability for use in the assumptions underlying the mineral resource and mineral reserve estimates.
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Table 9-1:    External Data Reviews
ConsultantYearComment
SNC Lavalin2003Database audit, check assay review, independent witness sampling.
Independent Mining Consultants2005Database review for feasibility purposes, check assay review, review of variances between drill campaigns.
Mine Development Associates2007Review of check assay data.
P&E Mining Consultants2008QA/QC review.
Hamilton2014QA/QC review.
9.4    QP Comments on “Item 12: Data Verification”
Data that were verified on upload to the database, checked using the layered responsibility protocols, and reviewed by subject matter experts are acceptable for use in mineral resource and mineral reserve estimation.
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10.0    MINERAL PROCESSING AND METALLURGICAL TESTING
10.1    Test Laboratories
Metallurgical testwork was conducted by a number of laboratories prior to and during early operations. These included: Hazen Research, Golden Colorado, USA; Instituto de Metalurgia, UASLP, San Luis Potosi, México; FLSmidth Knelson, British Columbia, Canada; ALS Metallurgy Kamloops, British Columbia; Kemetco, Richmond, British Columbia; Surface Science Western, London, Ontario; AuTec, Vancouver, British Columbia; Blue Coast Research, Parksville, British Columbia; XPS, Falconbridge, Ontario; and Met-Solve, Langley, British Columbia. All of these laboratories were and are independent. Additional metallurgical tests were performed at the Minera Peñasquito Metallurgical Laboratory, which is not independent.
Current testwork is being performed at Newmont’s internal Malozemoff Technical Facility which is not independent and by independent laboratories Alfa Laval, Coatex, Solvay, Patterson and Cooke and Microanalytical.
There is no international standard of accreditation provided for metallurgical testing laboratories or metallurgical testing techniques.
10.2    Metallurgical Testwork
Metallurgical testwork included: mineralogy; open and closed-circuit flotation; lead–copper separation flotation; pyrite flotation; bottle and column cyanide leaching; flotation kinetics and cell design parameters, flowsheet definition, and leach response with regrind size, slurry density, leaching time, reagent consumption values, and organic carbon effects; gravity-recoverable gold; hardness characterization (SMC, breakage parameter, Bond ball mill work index, drop weight index, rod work index, unconfined compressive strength, semi-autogenous grind (SAG) power index); and batch and pilot plant tests.
These test programs were sufficient to establish the optimal processing routes for the oxide and sulfide ores, performed on mineralization that was typical of the deposits. The results obtained supported estimation of recovery factors for the various ore types.
Since the early start-up of operations, metallurgical testing was performed on a daily basis for all ores that were feed to the mill. These daily tests were aimed to capture the expected performance of the ore in the sulfide plant to determine in advance any change in the reagent scheme or in the impurity levels into the final concentrates.
Historically, this resulted in identification of a number of different ore types. Current understanding of ore characterization and variability has simplified forecast metallurgical recovery classification to sediment and diatreme ores and the relative organic carbon content.
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10.3    Recovery Estimates
The mineralogical complexity of the Peñasquito ores makes the development of recovery models difficult as eight elements (gold, silver, lead, zinc, copper, iron, arsenic, and antimony) are tracked through the process. Recovery models need to be sufficiently robust to allow for changes in mineralogy and plant operations, while providing reasonable predictions of concentrate quality and tonnage.
The previous recovery model used for the Peñasquito Operations was integrated in 2017. An update was completed in 2021. The sulfide recovery model (2021RM) currently used at the Peñasquito Operations was built using operational information from 2017–2020, which included additional organic carbon data. The model was integrated into the Peñasquito resource block model and into the budgeting and forecasting exercises during May and June of 2021 for the 2022 Peñasquito production budget (BP22). The pyrite leach plant recovery model was built on operational information from 2019–April 2020 and integrated into mine planning during mid-2020.
Forecast average life-of-mine recoveries for the sulfide plant are:
Gold: 69%;
Silver: 87%;
Lead: 73%;
Zinc: 81%.
The last ore placed onto the oxide heap leach pad was in August 2019 and grades were depleted finalizing production in August, 2020. The oxide heap leach is currently only being recirculated with water and closure studies are under development.
10.4    Metallurgical Variability
Samples selected for metallurgical testing during feasibility and development studies were representative of the various types and styles of mineralization within the deposit. Samples were selected from a range of locations within the deposit zones. Sufficient samples were taken so that tests were performed on sufficient sample mass.
10.5    Deleterious Elements
The mineralogy at Peñasquito is diverse. Galena and sphalerite are the main payable base metals minerals, with a host of complex sulfosalts (including tennantite and tetrahedrite) also reporting to the concentrates. These sulfosalts can carry varying amounts of deleterious elements such as arsenic, antimony, copper and mercury. Copper can also be considered as a commodity as it is paid by certain customers. At the date of this Report, the processing plant, in particular the flotation portion of the circuit, does not separate the copper-bearing minerals from the lead minerals, so when present the sulfosalts report (primarily) to the lead concentrate. There is no direct effect of deleterious elements on the recovery of precious and base metals
The marketing contracts are structured to allow for small percentages of these deleterious elements to be incorporated into the final product, with any exceedances then incurring nominal
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penalties. Historically, due to the relatively small proportion of concentrate that has high levels of deleterious elements, the marketing group was able to sufficiently blend the majority of the deleterious elements such that little or no financial impact has resulted.
Within the metallurgical models used at Peñasquito, copper recovery to lead concentrate varies from 40–80%, with 10–20% copper recovery into zinc concentrate. Due to the close mineralogical association, arsenic and antimony recovery to concentrate is based on a relationship to the copper in the concentrate. The future impact of the deleterious elements is thus highly dependent on the lead–copper ratio in ores.
Mercury is not included in the metallurgical models as it is not included in the mine plan. One small area of the mine (located within a narrow fault zone that is hosted in sedimentary rock in the southwest of the pit) was defined as containing above-average mercury grades. Due to its limited size, blending should be sufficient to minimize the impact of mercury from this area on concentrate quality.
Organic carbon has also been recognized as a deleterious element affecting the recovery of gold and the operational cost in the process plant. The carbon pre-flotation process was built to allow for removal of liberated organic carbon ahead of lead and zinc flotation and the pyrite leach plant, so that those process steps could operate in a similar fashion to operation with low-carbon ores.
10.6    Qualified Person’s Opinion on Data Adequacy
In the opinion of the QP, the metallurgical test work and reconciliation and production data support the declaration of mineral resources and mineral reserves:
The metallurgical test work completed on the Project was appropriate for optimizing processing conditions and routes for proper process operation;
Tests were performed on samples that are considered to be representative for the deposit and its mineralogy;
Recovery factors estimated are based on appropriate metallurgical testwork, plant operational information, and are appropriate to the mineralization types and the selected process route;
The plant will produce variations in recovery due to the day-to-day changes in ore type or combinations of ore type being processed. These variations are expected to trend to the forecast recovery value for monthly or longer reporting periods.
The QP notes:
The new recovery models consider the effect of organic carbon throughout the process. These new models are robust and should provide an accurate estimation of production and recoveries;
The 2021 throughput model is a power-based model that integrates feed material lithology into recovery calculations, and therefore considers the effects of the properties of the various ores on the process.
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11.0    MINERAL RESOURCE ESTIMATES
11.1    Introduction
The database supporting resource estimation contains core drilling information from numerous drilling campaigns beginning in the 1990s through to the database close-out date of 10 June 2021. Geological interpretations were compiled using Leapfrog software. MineSight was used for compositing and grade interpolation. The block size selected was 15 x 15 x 15 m.
11.2    Geological Models
Models constructed included lithology, alteration, structure, oxidation, grade shells, north–south domains, fault domains, and organic carbon.
11.3    Exploratory Data Analysis
The raw drilling data and composites were coded by lithology, alteration, structural, north–south domains and fault domains, and statistically analyzed using summary statistics, log histograms, and log probability plots to determine domain selection for the resource estimation.
Contact boundary analysis was used to determine whether domain contacts would be treated as soft, firm or hard during estimation.
11.4    Density Assignment
Density was tabulated by a combination of lithology, alteration and zone. Density values may be decreased based on the presence of oxides and/or faulting within the block being estimated.
11.5    Grade Capping/Outlier Restrictions
Outlier grades were investigated using cumulative probability plots and histograms of the raw assay grades by estimation domain. Grade caps were applied to raw assay data prior to compositing. The selected cut-off varied by domain and was selected at around the 99th to 99.9th percentile for all interpolated metals.
Caps were applied by domain and could vary. Depending on domain, gold, silver, lead, zinc, copper, arsenic, antimony and sulfur grades could be capped. No capping was applied to organic carbon or iron values.
An isotropic search distance that ranged from about 50–100 m was used to constrain the extrapolation of high grades (outlier restriction) for most elements and domains.
11.6    Composites
Composites were created down each hole at 5 m fixed intervals. In the models that use grade domains, composites were constructed to honor grade–domain contacts, that is, composites end at each grade–domain contact, and start again after it. Composites <2 m in length were discarded.

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11.7    Variography
Multi-directional variograms (correlograms) were developed using Sage software for gold, silver, lead, and zinc for each domain to determine grade continuity of these elements.
Most variograms are modelled with two exponential models and the nugget set using the down-hole variogram or an omni-directional variogram with a short lag spacing.
11.8    Estimation/Interpolation Methods
Ordinary kriging was used to interpolate blocks, using two passes for all elements other than iron. A range of inputs were used by domain. Iron was estimated using inverse distance weighting to the second power (ID2).
11.9    Block Model Validation
Model validation processes included:
Visual inspection of the results on plan and section compared to the composites data and blastholes data;
Comparison of the estimate against previous model (separately for each metal) and nearest-neighbor (NN) distributions;
Comparison of the estimates against ore-control estimation distributions using grade–tonnage curves;
Analysis of grade profiles by easting, northing and elevation using swath plots;
The check showed that the models were acceptable for use in mineral resources and mineral reserve estimation.
11.10    Classification of Mineral Resources
11.10.1    Mineral Resource Confidence Classification
Mineral resources at Peñasquito are classified using criteria based primarily on drilling spacing and a minimum number of drill holes informing each estimated block:
Measured mineral resources require an average drill spacing distance of 27.5 m and at least three drill holes;
Indicated mineral resources require an average drill spacing of 50 m and at least three drill holes;
Inferred mineral resources require an average drill spacing of 200 m and at least three drill holes;
All blocks within the Overburden domain were classified as Inferred.
Smoothing was undertaken to eliminate isolated blocks of one class surrounded by blocks of a different class.

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11.10.2    Uncertainties Considered During Confidence Classification
Following the analysis in Chapter 11.10.1 that classified the mineral resource estimates into the measured, indicated and inferred confidence categories, uncertainties regarding sampling and drilling methods, data processing and handling, geological modelling, and estimation were incorporated into the classifications assigned.
The areas with the most uncertainty were assigned to the inferred category, and the areas with fewest uncertainties (stockpiles) were classified as measured.
11.11    Reasonable Prospects of Eventual Economic Extraction
11.11.1    Input Assumptions
For each resource estimate, an initial assessment was undertaken that assessed likely infrastructure, mining, and process plant requirements; mining methods; process recoveries and throughputs; environmental, permitting and social considerations relating to the proposed mining and processing methods, and proposed waste disposal, and technical and economic considerations in support of an assessment of reasonable prospects of economic extraction.
Cut-off grades will vary over the life of an open pit, due to variations in capital and operating costs, mine and mill performance, metal prices, exchange rates, and potentially, individual deposit geological and grade characteristics.
Mineral resources were constrained within a designed pit shell that is based on a Lerchs–Grossmann pit shell that used the parameter assumptions listed in Table 11-1.
11.11.2    Commodity Price
Commodity prices used in resource estimation are based on long-term analyst and bank forecasts, supplemented with research by Newmont’s internal specialists. An explanation of the derivation of the commodity prices is provided in Chapter 16.2. The estimated timeframe used for the price forecasts is the 10-year LOM that supports the mineral reserve estimates.
11.11.3    Cut-off
Mineral resources are reported using cut-offs that are determined by the process route. The cut-off is based on generating positive net smelter return (NSR) on a block-by-block basis, applying all revenue and associated costs. The incremental NSR cost used for mill feed material is US$12.49/t, and includes all process operating, administrative and sustaining capital costs. Other factors considered include product freight to market costs, smelter costs (including penalties), and royalties.

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Table 11-1:    Conceptual Pit Parameter Input Assumptions
ItemUnitsValue
Bench face anglesRange from/toº35.9–50.5
Metallurgical recoveries
(average, LOM)
Gold%69
Silver%87
Lead%73
Zinc%81
CostsMining cost, Penasquito, Chile ColoradoUS$/t1.94; 1.65
Mill processing costUS$/t10.25
Operational support G&AUS$/t2.31
Rehandle costUS$/t0.48
Sustaining capital allocation (TSF construction cost)US$/t1.68
Sustaining capital allocation (other)US$/t0.41
Saavi Energia electricity
US$/t0.52
Commodity pricesGoldUS$/oz1,400
SilverUS$/oz23
LeadUS$/lb1.10
ZincUS$/lb1.40
Exchange rateMexican Peso/US Dollar19.5
11.11.4    QP Statement
The QP is of the opinion that any issues that arise in relation to relevant technical and economic factors likely to influence the prospect of economic extraction can be resolved with further work.
The mineral resource estimates are performed for a deposit that is in a well-documented geological setting; the Peñasquito deposits have seen nearly 14 years of active open pit operations conducted by Newmont and other parties; Newmont is familiar with the economic parameters required for successful operations in the Peñasquito area; and Newmont has a history of being able to obtain and maintain permits, and the social license to operate, and meet environmental standards in the Peñasquito area.
11.12    Mineral Resource Statement
Mineral resources are reported using the mineral resource definitions set out in SK1300 on a 100% basis.
The estimates are current as at December 31, 2021.
The reference point for the estimates is in situ.
Mineral resources are reported exclusive of those mineral resources converted to mineral reserves.
The mineral resource estimates for the Peñasquito Operations are provided as follows:
Gold: Table 11-2 (measured and indicated); Table 11-3 (inferred);
Silver: Table 11-4 (measured and indicated); Table 11-5 (inferred);
Lead: Table 11-6 (measured and indicated); Table 11-7 (inferred);

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Zinc: Table 11-8 (measured and indicated); Table 11-9 (inferred).
11.13    Uncertainties (Factors) That May Affect the Mineral Resource Estimate
Areas of uncertainty that may materially impact the mineral resource estimates include:
Changes to long-term commodity price assumptions;
Changes in local interpretations of mineralization geometry and continuity of mineralized zones;
Changes to geological shape and continuity assumptions;
Changes to metallurgical recovery assumptions;
Changes to the operating cut-off assumptions for mill feed or stockpile feed;
Changes to the input assumptions used to derive the conceptual open pit outlines used to constrain the estimate;
Changes to the cut-off grades used to constrain the estimates;
Variations in geotechnical, hydrogeological and mining assumptions;
Changes to governmental regulations;
Changes to environmental assessments;
Changes to environmental, permitting and social license assumptions

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Table 11-2:    Measured and Indicated Mineral Resource Statement (Gold)
AreaMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Peñasco11,4000.3312065,5000.3472076,8000.34840
Chile Colorado20,1000.24160111,1000.22780131,2000.22930
Open Pit Sub-Total31,4000.27280176,6000.271,500208,0000.271,780
Total Peñasquito31,4000.27280176,6000.271,500208,0000.271,780
Table 11-3:    Inferred Mineral Resource Statement (Gold)
Area
Inferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Peñasco43,1000.5760
Chile Colorado46,7000.3400
Open Pit Sub-Total89,8000.41,160
Total Peñasquito89,8000.41,160
Table 11-4:    Measured and Indicated Mineral Resource Statement (Silver)
AreaMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Peñasco11,40021.607,89065,50021.7945,85076,80021.7653,740
Chile Colorado20,10028.0418,100111,10029.05103,780131,20028.90121,870
Open Pit Sub-Total31,40025.7125,990176,60026.36149,620208,00026.26175,610
Total Peñasquito31,40025.7125,990176,60026.36149,620208,00026.26175,610
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Table 11-5:    Inferred Mineral Resource Statement (Silver)
AreaInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Peñasco43,10028.439,440
Chile Colorado46,70027.641,400
Open Pit Sub-Total89,80028.080,840
Total Peñasquito89,80028.080,840
Table 11-6:    Measured and Indicated Mineral Resource Statement (Lead)
AreaMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(% Pb)
Contained
Lead
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Pb)
Contained
Lead
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Pb)
Contained
Lead
(M lbs)
Peñasco11,4000.246065,5000.2333076,8000.23390
Chile Colorado20,1000.33140111,1000.28690131,2000.29830
Open Pit Sub-Total31,4000.29200176,6000.261,020208,0000.271,230
Total Peñasquito31,4000.29200176,6000.261,020208,0000.271,230
Table 11-7:    Inferred Mineral Resource Statement (Lead)
AreaInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(% Pb)
Contained
Lead
(M lbs)
Peñasco43,1000.2220
Chile Colorado46,7000.3260
Open Pit Sub-Total89,8000.2480
Total Peñasquito89,8000.2480
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Table 11-8:    Measured and Indicated Mineral Resource Statement (Zinc)
AreaMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(% Zn)
Contained
Zinc
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Zn)
Contained
Zinc
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Zn)
Contained
Zinc
(M lbs)
Peñasco11,4000.4611065,5000.4767076,8000.46790
Chile Colorado20,1000.78350111,1000.641,560131,2000.661,910
Open Pit Sub-Total31,4000.66460176,6000.572,230208,0000.592,690
Total Peñasquito31,4000.66460176,6000.572,230208,0000.592,690
Table 11-9:    Inferred Mineral Resource Statement (Zinc)
AreaInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(% Zn)
Contained
Zinc
(M lbs)
Peñasco43,1000.5460
Chile Colorado46,7000.6610
Open Pit Sub-Total89,8000.51,070
Total Peñasquito89,8000.51,070
Notes to accompany mineral resource tables:
1.Mineral resources are current as at December 31, 2021. Mineral resources are reported using the definitions in SK1300 on a 100% basis. The Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.The reference point for the mineral resources is in situ.
3.Mineral resources are reported exclusive of mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
4.Mineral resources that are potentially amenable to open pit mining methods are constrained within a designed pit . Parameters used are included in Table 11-1
5.Tonnages are metric tonnes rounded to the nearest 100,000. Gold and silver grades re rounded to the nearest 0.01 grams per tonne. Lead and zinc grade is reported as a %. Gold and silver ounces and lead and zinc pounds are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold and silver ounces are reported as troy ounces, rounded to the nearest 10,000. Lead and zinc are reported as pounds.
6.Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”).
7.Totals may not sum due to rounding.
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12.0    MINERAL RESERVE ESTIMATES
12.1    Introduction
Measured and indicated mineral resources were converted to mineral reserves. All Inferred blocks were classified as waste. Mineral reserves include mineralization within the Peñasco and Chile Colorado open pits, and stockpiled material. All Inferred blocks are classified as waste in the cashflow analysis that supports mineral reserve estimation.
12.2    Pit Optimization
Whittle pit optimization through the commercially-available EK15 software program was used to perform a Lerchs–Grossmann optimization. The reserve pit designs were full crest and toe detailed designs with final ramps.
For mineral reserves, Newmont applies a time discount factor to the dollar value block model that is generated in the Lerchs–Grossmann pit-limit analysis, to account for the fact that a pit will be mined over a period of years, and that the cost of waste stripping in the early years must bear the cost of the time value of money. In some deposits, where mineralization is uniformly distributed throughout the pit, or where the pit is shallow, discounting has little effect on the economic pit limit.
Pit discounting is accomplished by running the pit-limit “dollar” model through a program that discounts the dollar model values at a compound rate based on the depth of the block. In this manner, discounting is applied to future costs as well as future revenues, to represent the fact that mining proceeds from the top down within a phase.
Optimization work involved floating cones at a series of gold prices. The generated nested pit shells were evaluated using the mineral reserve prices of US$1,200/oz for gold, US$20/oz for silver, US$0.90/lb for lead, and US$1.15/lb for zinc and an 8% discount rate. The pit shells with the highest NPV were selected for detailed engineering design work.
A realistic schedule was developed in order to determine the optimal pit shell for each deposit; schedule inputs include the minimum mining width, and vertical rate of advance, mining rate and mining sequence.
12.3    Optimization Inputs and Assumptions
The pit slope, metallurgical recovery, and commodity price optimization inputs are summarized in Table 12-1.
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Table 12-1:    Optimisation Input Parameters
ItemUnitsValue
Overall slope anglesRange from/toº39–75
35.9–50.5
Metallurgical recoveries
(average, LOM)
Gold%69
Silver%867
Lead%73
Zinc%81
CostsMining cost, Penasquito, Chile ColoradoUS$/t2.04; 2.11
Mill processing costUS$/t10.25
Operational support G&AUS$/t2.31
Rehandle costUS$/t0.48
Sustaining capital allocation (TSF construction cost)US$/t1.11
Sustaining capital allocation (other)US$/t0.41
Saavi Energia electricityUS$/t0.52
Commodity pricesGoldUS$/oz1,200
SilverUS$/oz20
LeadUS$/lb0.90
ZincUS$/lb1.15
Exchange rateMexican Peso/US Dollar19.5
Mining considerations included:
Operational considerations with respect to active mining area interaction and ramp usage from the exit from the pit bottom;
Ramp connections, ramp placement, and ramp exits;
Minimum mining width of 45 m;
The existing topography and target final pit limits.
Pit designs are full crest and toe detailed designs with final ramps based on the selected optimum pit shells. Pit designs honor geotechnical guidelines.
Newmont updates its LOM plan each year in preparation for the business plan. All aspects of the plan, including pit stage design and sequencing, cut-off optimization and WRSF and stockpiling strategies are reviewed.
The process plant processes higher-grade ores delivered from the mine at an elevated cut-off. The ore between the elevated cut-off and the marginal cut-off is stockpiled for later processing at the end of the mine life.
Most of the ore will be directly fed to the process plant; however, some re-handle is required. Direct feeding to the crusher is constrained by where the ore is located in the open pit and the crusher availability. Some higher-grade ore is stockpiled and fed back to the crusher when required. Approximately 36,000 t/d of feed is re-handle material from the stockpiles.
The mine plan is based on a 36 Mt/a mill throughput. The schedule was developed at an NSR cut-off of US$14.61/t, incorporating the processing cost, metallurgical recovery, incremental ore mining costs, process sustaining capital and tailings dam related rehabilitation costs. The net revenue calculation assumes a gold price of US$1,200/oz silver price of US$20/oz, lead price of
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US$0.90/lb and a zinc price of US$1.15/lb. The assumed exchange rate for mineral reserves was 19.5 Mexican pesos per US$. Mineral reserves are reported above an NSR cut-off of US$14.61/t.
12.4    Ore Loss and Dilution
The block models were constructed to include the expected dilution and ore loss based on mining methods, bench height and other factors. The current mine and process reconciliation support this assumption.
12.5    Stockpiles
Stockpile estimates were based on mine dispatch data; the grade comes from closely-spaced blasthole sampling and tonnage sourced from truck factors. The stockpile volumes are typically updated based on monthly surveys. The average grade of the stockpiles is adjusted based on the material balance to and from the stockpile.
12.6    Commodity Prices
Mineral reserves that will be mined using open pit mining methods are reported within a mine design. Commodity prices used in mineral reserve estimation are based on long-term analyst and bank forecasts, supplemented with research by Newmont’s internal specialists. The estimated timeframe used for the price forecasts is the 10-year LOM that supports the mineral reserve estimates.
12.7    Mineral Reserves Statement
Mineral reserves are reported using the mineral reserve definitions set out in SK1300 on a 100% basis.
Mineral reserves are current as at December 31, 2021.
The reference point for the mineral reserve estimate is as delivered to the process facilities.
The mineral reserve estimates for the Peñasquito Operations are provided as follows:
Gold: Table 12-2;
Silver: Table 12-3;
Lead: Table 12-4;
Zinc: Table 12-5.
Tonnages in the tables are metric tonnes.
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Table 12-2:    Mineral Reserves Statement (Gold)
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Peñasco74,1000.691,650171,1000.603,300245,3000.634,940
Chile Colorado33,0000.4649048,0000.4062081,0000.431,110
Open Pit Sub-Total107,2000.622,140219,1000.563,920326,3000.586,050
Stockpile Sub-Total7,8000.4311027,9000.1917035,7000.24280
Total Peñasquito115,0000.612,250247,0000.514,080362,0000.546,330
Table 12-3:    Mineral Reserves Statement (Silver)
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Peñasco74,10038.6592,130171,10032.32177,850245,30034.23269,970
Chile Colorado33,00039.0941,52048,00034.2952,92081,00036.2594,430
Open Pit Sub-Total107,20038.79133,650219,10032.75230,760326,30034.73364,410
Stockpile Sub-Total7,80031.107,81027,90024.1521,67035,70025.6729,470
Total Peñasquito115,00038.26141,460247,00031.78252,430362,00033.84393,880
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Table 12-4:    Mineral Reserves Statement (Lead)
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(% Pb)
Contained
Lead
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Pb)
Contained
Lead
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Pb)
Contained
Lead
(M lbs)
Peñasco74,1000.41660171,1000.301,140245,3000.331,800
Chile Colorado33,0000.3022048,0000.2830081,0000.29520
Open Pit Sub-Total107,2000.37880219,1000.301,440326,3000.322,320
Stockpile Sub-Total7,8000.346027,9000.3220035,7000.33260
Total Peñasquito115,0000.37940247,0000.301,640362,0000.322,580
Table 12-5:    Mineral Reserves Statement (Zinc)
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(% Zn)
Contained
Zinc
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Zn)
Contained
Zinc
(M lbs)
Tonnage
(x 1,000 t)
Grade
(% Zn)
Contained
Zinc
(M lbs)
Peñasco74,1000.921,510171,1000.702,630245,3000.774,140
Chile Colorado33,0001.0475048,0000.9297081,0000.961,720
Open Pit Sub-Total107,2000.962,260219,1000.743,600326,3000.815,860
Stockpile Sub-Total7,8000.6712027,9000.4528035,7000.50390
Total Peñasquito115,0000.942,380247,0000.713,870362,0000.786,250
Notes to accompany mineral reserve tables:
1.Mineral reserves current as at December 31, 2021. Mineral reserves are reported using the definitions in SK1300 on a 100% basis. he Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.The reference point for the mineral reserves is the point of delivery to the process plant.
3.Mineral reserves are confined within open pit designs. Parameters used are summarized in Table 12-1.
4.Tonnages are metric tonnes rounded to the nearest 100,000. Gold and silver grades re rounded to the nearest 0.01 grams per tonne. Lead and zinc grade is reported as a %. Gold and silver ounces and lead and zinc pounds are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold and silver ounces are reported as troy ounces, rounded to the nearest 10,000. Lead and zinc are reported as pounds.
5.Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”).
6.Totals may not sum due to rounding.
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12.8    Uncertainties (Factors) That May Affect the Mineral Reserve Estimate
Areas of uncertainty that may materially impact all of the mineral reserve estimates include:
Changes to long-term metal price and exchange rate assumptions;
Changes to metallurgical recovery assumptions;
Changes to the input assumptions used to derive the mineable shapes applicable to the open pit mining methods used to constrain the estimates;
Changes to the forecast dilution and mining recovery assumptions;
Changes to the cut-off values applied to the estimates;
Variations in geotechnical (including seismicity), hydrogeological and mining method assumptions;
Changes to governmental regulations, including taxation regimes;
Changes to environmental, permitting and social license assumptions.
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13.0    MINING METHODS
13.1    Introduction
Open pit mining is conducted using conventional techniques and an Owner-operated conventional truck and shovel fleet. Currently, two open pits, Peñasco and Chile Colorado are being mined.
13.2    Geotechnical Considerations
The geotechnical model is based on information from geotechnical drilling and logging, laboratory test work, rock mass classification, structural analysis and stability modeling. A total of 12 geotechnical units are defined for planning purposes, using a combination of lithology, mineralization, alteration and laboratory test results. Overall pit slope angles vary by sector within both Peñasco and Chile Colorado open pits, and are based on the recommendations from third-party consultants and Newmont personnel.
The overall designs are based around 15 m mining bench and 30 m double bench intervals. Some inter-ramp heights extend to 45 m and have 5 m-wide step-outs to control potential slope instabilities. Designs take into account haulage ramp positioning, safety berms, and other geotechnical features required to maintain safe inter-ramp slope angles.
Wall control monitoring is supported by five monitoring radars and two robotic total stations installed, covering the total area of the pits.
Designs are reviewed for geotechnical compliance and maximum slope height, global angles and interaction with infrastructure or roads. As mining operations progress in the pit, additional geotechnical drilling and stability analysis will continue to be conducted to support optimization of the geotechnical parameters in the LOM designs.
13.3    Hydrogeological Considerations
A combination of Newmont staff and external consultants have developed the pit water management program, completed surface water studies, and estimated the life- of-mine site water balance. Management of water inflows to date have been appropriate, and no hydrological issues that could impact mining operations have been encountered.
Water levels are maintained at least 30 m below the active mining elevation (bench) to ensure efficient production and safe access. The current pumping system consists of seven wells surrounding the current Peñasco open pit. Six of the wells are located inside the pit and the remaining well is located outside the current mining boundary, but within the overall tenement holdings.
The mine dewatering wells are drilled to 17” (43 cm) diameter and then a 10” (25.4 cm) casing is installed with gravel pack between the casing and drill hole to provide a conductive flow path. The average depth of the wells is 850 m. All wells are vertical and contain downhole submersible pumps which discharge into high-density polyethylene (HDPE) conveyance lines for collection in the fresh water pond. Well control is maintained via a fiber-optic line that is directly connected to the plant control room.
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The pit area water levels are monitored through a network of piezometer wells, located both within the pit and surrounding it, for accurate water level measurement and reporting.
13.4    Operations
A mine schedule was developed using the commercially-available Deswik Scheduler software package. In this schedule, the Peñasquito pit has four remaining stages (Phases 6 to 9), and will be excavated to a total depth of 780 m. The Chile Colorado pit has one remaining stage (Phase 2), and will reach 461 m ultimate depth. A final pit layout plan showing the pit phases is provided in Figure 13-1.
The remaining mine life is 10 years, with the last year, 2031, being a partial year. The open pit operations will progress at a nominal annual mining rate of 193 Mt/a until the end of 2023, subsequently decreasing to a nominal mining rate of 144 Mt/a until the end of 2027. The LOM plan assumes a nominal rate of 36 Mt/a milling until 2031.
Operations use a standard drill-and-blast, truck-and-shovel configuration. The ramp design comprises two traffic lanes, safety berms and ditches. Ramp gradients are established at 10%. Haul road width assumptions include berm security of 8 m of width. The height of the safety berm is generally about ⅔ of the diameter of tire of the largest vehicle travelling on the road.
An ore stockpiling strategy is practiced. The mine plan considers the value of the blocks mined on a continuous basis combined with the expected concentrates quality. From time to time ore material with a lower NSR value will be stockpiled to bring forward the processing of higher-value ore earlier in the LOM.
In some instances, the ore is segregated into stockpiles of known composition to allow for blending known quantities of material at the stockpile as required by the mill/customer.
Stockpiling at Peñasquito also allows for forward planning for ore quality to ensure optimal mill performance and consistent gold production match, within the normal bounds of expected variability within the mine plan.
13.5    Blasting and Explosives
Drill patterns range from 8.00 m x 9.00 m in overburden to 5.00 m x 5.50 m in sulfide ore.
Blasting is carried out primarily with conventional ANFO explosives, supplied by an explosives contractor. Appropriate powder factors are used to match ore, waste, and overburden types.
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Figure 13-1:    Final Pit Layout Plan
image131.jpg
Note: Figure prepared by Newmont, 2021.
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13.6    Grade Control
Ore control is undertaken 24 hrs/7 days a week in 12-hour shifts. Samples are taken from blast holes and sent to the mine laboratory. Once results are available, the database is updated, and interpolation is carried out in the ore control model. Ore and waste boundaries are delineated using an NSR cut-off of US$14.61/t. The material is released according to ore type and the stockpile destination is defined. Field geologists supervise the digging accuracy, and ensure that the correct materials are sent to the correct destination. Ore control staff also provides guidance on material specifications, and provide input so that short-term blending plans are complied with.
13.7    Production Schedule
The LOM forecast production schedule is provided in Table 13-1.
13.8    Mining Equipment
Open pit mining is undertaken using a conventional truck-and-shovel fleet, using the equipment listed in Table 13-2.
13.9    Personnel
The LOM personal requirements for LOM mine operations including mine operation/maintenance and mine technical services is 1,270.
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Table 13-1:    LOM Production Plan Forecast
ItemUnitTotal2022202320242025202620272028202920302031
Material minedM tonnes1,26219319316915214011696666534
Ore processedM tonnes36237343739383637353733
Note: Numbers have been rounded; totals may not sum due to rounding.
Table 13-2:    LOM Equipment List
Item/PurposeCommentPeak Number
Bucyrus 495Rope shovel5
Komatsu PC8000Hydraulic shovel2
Komatsu PC5500Hydraulic shovel1
Komatsu WA1200Loader2
Komatsu 930Haul truck82
Cat777Haul truck4
Pit Viper 351Production drill4
Pit Viper 271Production drill5
Flexiroc D65Pre-split drill4
Komatsu D475Track dozer4
Cat D11Track dozer6
Komatsu WD900Wheel dozer7
Cat 24mGrader7
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14.0    RECOVERY METHODS
14.1    Process Flow Sheet
14.1.1    Introduction
The Peñasquito Operations consist of a heap leach gold and silver recovery facility which is no longer in production since August 2020 and a sulfide plant that processes a maximum of 119,000 t/d of sulfide ore according to the 2021 throughout model.
The process plants were designed on a range of hardness, but as the mine has become deeper, the softer oxide ores are no longer the predominant feed material.
The oxide flowsheet is included as Figure 14-1. A schematic of the sulfide process flowsheet is included as Figure 14-2 for the lead–zinc portion of the flowsheet, and in Figure 14-3 for the precious metals plant portion of the flowsheet.
The oxide plant is no longer in production as of August 2020. The heap leach pad is being recirculated with water while closure plans are under development. The areas of the circuit above the purple dotted line are only recirculating water with no production. The area (refinery) below the purple line is being used to treat pyrite leach plant calcines.
14.2    Plant Design
14.2.1    Oxide Plant
As of August 2020, the oxide plant is no longer in production and is being recirculated with water. Closure plans are under development for the heap leach pad.
14.2.2    Sulfide Plant
ROM ore is delivered to the crusher dump pocket from the mine by 290 t rear-dump–haul trucks. The crushing circuit is designed to process 136,000 t/d of ROM ore to 80% passing 150 mm. The crushing facility consists of a gyratory crusher capable of supporting the 92% utilization on a 24-hour-per-day, 365-days-per-year basis of the processing plant. A near-pit sizing conveyor (NPSC) supports higher throughputs by facilitating waste removal.
Product from the gyratory crusher discharges into a 500 t surge pocket directly below the crusher. The crusher feeds, via an apron feeder, a coarse ore stockpile that has a 91,800 t live capacity. A total of 10 apron feeders arranged in two lines, of five feeders each, reclaim ore from the coarse ore stockpile. Nine feeders report the coarse ore to two semi-autogenous grinding (SAG) mills operating in closed circuit with pebble crushers and one high pressure grinding roller (HPGR) unit. Each SAG mill operates with two ball mills.
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Figure 14-1:    Simplified Oxide Flowsheet
image141.jpg
Note: Figure prepared by Newmont, 2021.
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Figure 14-2:    Sulfide Process Flowsheet (base metals)
image142.jpg
Note: Figure prepared by Newmont, 2020.
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Figure 14-3:    Sulfide Process Flowsheet (precious metals)
image143.jpg
Note: Figure prepared by Newmont, 2020.
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The pebble crushing circuit includes three cone crushers working in parallel and one HPGR unit working in series with the cone crushers. An “augmented feed” secondary cone crusher is fed directly with coarse ore stockpile material by a single apron feeder and the product is dry screened. The oversize from the augmented feed crusher screen together with the oversize from the SAG trommel screens constitutes the feed to the pebble cone crushers. The pebble crusher product together with the fines produced by the augmented feed crusher screen are discharged to a bin that feeds the HPGR or, when necessary, feeds directly to the SAG mills.
Each grinding circuit reduces the crushed ore from a passing P80 of 159 mm size to a passing P80 of 125 µm. The SAG trommel screen undersize (minus 19 mm material) discharges to a common sump. Secondary grinding is performed in four ball mills, operating in closed circuit with cyclones. Ball mill discharge is combined with SAG mill trommel screen undersize and the combined slurry is pumped to the primary cyclone clusters. Cyclone underflow reports back to the ball mills. Cyclone overflow flows by gravity to the flotation area as final grinding product. The flotation area is comprised of carbon, lead and zinc flotation circuits.
The carbon pre-flotation circuit consists of two banks each with two cells of rougher in parallel. Carbon rougher concentrate proceeds to a single bank of three cleaner cells. The cleaner concentrate is treated in a single re-cleaner column, while the cleaner tails flow to a single bank of three cleaner-scavenger cells. Cleaner-scavenger concentrate returns to the cleaner circuit, while cleaner-scavenger tails are mixed with rougher tails which then become feed to the lead circuit. The recleaner column concentrate proceeds primarily to the tertiary precious metals recovery circuit, but can also be directed to final tails.
The lead rougher flotation consists of six rows of rougher flotation machines in parallel, each row consisting of five cells. Lead rougher concentrate is bypassed directly to the lead cleaner conditioning tank. Product at a passing P80 of 30 µm is cleaned in a three-stage cleaner circuit. Reagents are added into the rougher and cleaner circuits on as-required basis.
Tailings from the lead circuit flow by gravity to the zinc rougher conditioner tanks. One conditioner tank is installed for each bank of zinc rougher flotation cells. The conditioner tanks provide retention to facilitate activation of the sphalerite by copper sulfate addition. Collector is added to recover the zinc associated with activated sphalerite. Frother is added as required.
The slurry in the conditioners overflows to the zinc rougher flotation circuit, which consists of six banks of six tank-type, self-aerating, rougher flotation cells. Tailings from all rows of zinc rougher cells are combined in a tailings box and are pumped to the pyrite leach process (PLP) circuit. The rougher zinc concentrate is reground in vertical mills operating in closed circuit with cyclones. Product at a passing P80 of 30 µm is cleaned in a three-stage cleaner circuit. Reagents are added into the rougher and cleaner circuits on as-required basis.
Final lead and zinc concentrates are thickened, pressure filtered, and trucked to inland smelters or to ports for overseas shipment.
Table 17-1 lists the major equipment currently operating at the Peñasquito process plant.
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Table 14-1:    Process Equipment List, Sulfide Circuit
AreaEquipmentParameterValue
Crushing and grindingPrimary crusherTypeFFE – gyratory crusher
Size60” x 113”
Conveyor beltsWidth72”
Coarse ore stockpileLive Capacity91,800 t
Total Live Capacity238,800 t
Apron feedersQuantity5 per line
Dimensions48” x 17”
Augmented crusherTypeCone crusher
ModelRaptor XL 1100
Motor820 kW
SAG millQuantity2
TypeFFE – SAG gearless
Size11.6 m x 6.1 m
Motor19,400 kW
Ball millQuantity4 (2 lines)
TypeFFE – Ball mill
Size7.3 m x 11.3 m
Motor6,000 kW synchronous
CyclonesQuantity24 (4 cyclobanks)
TypeG-max 33
Pebble crusherQuantity3
TypeSandvik CH880
Motor600 kW
HPGRQuantity1
TypePolycom 24/17”
Motor5,000 kW
Carbon pre-flotation circuitRougher flotationTypeOutotec
Quantity2 banks of 2 cells
Volume
630 m3
Cleaner flotationTypeOutotec
Quantity1 bank of 3 cells
Volume
300 m3
Scavenger flotationTypeOutotec
Quantity1 bank of 3 cells
Volume
300 m3
Re-cleaner flotationTypeOutotec
Quantity1 column cell
Dimensions5.5 m diameter x 14 m
Tertiary precious metals recovery circuitGravity concentratorTypeFalcon ultrafine gravity concentrator
Quantity32
Size1.5 m dia
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AreaEquipmentParameterValue
Lead flotation circuitRougher flotationTypeWemco/Dorr Oliver
Quantity30 (6 rows, 5 cells per row)
Volume
250 m3
1st cleaner
Quantity7
Volume
42.5 m3
2nd cleaner
Quantity8
Volume
2.5 m3
3rd cleaner
Quantity4
Volume
2.5 m3
Zinc flotation circuitRougher flotationTypeWemco/Dorr Oliver
Quantity36 (6 rows, 6 cells per row)
Volume
250 m3
1st cleaner
Quantity7
Volume
42.5 m3
2nd cleaner
Quantity8
Volume
8.5 m3
3rd cleaner
Quantity5
Volume
8.5 m3
Vertical millQuantity2
TypeMetso – 485 kW
Lead concentrate thickeningThickenerQuantity2
TypeOutokumpu – high rate
Size10 m (32.81 ft.) dia
Storage tankQuantity2
Size
325 m3
Zinc concentrate thickeningThickenerQuantity2
TypeOutokumpu – high rate
Size14 m (45.93 ft.) dia
Storage tankQuantity2
Size
325 m3
Lead concentrate filteringFiltersTypePneumapress 14 plates
Size
2.8 m2
Quantity3
Zinc concentrate filteringFiltersTypePneumapress 14 plates
Size
2.8 m2
Quantity3
Tailings classificationCyclone towersQuantity2 (north tower & south tower)
Cyclone feed pumpsType600 mm x 650 mm GIW
Quantity3 per tower
Cyclone clusterTypeGmax 20
Quantity15 cyclones per cluster
Quantity2 clusters per tower
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14.2.3    Pyrite Leach Process
The slurry in the conditioners overflow to the zinc rougher flotation circuit, which consists of six banks of six tank-type, self-aerating, rougher flotation cells. Tailings from all rows of zinc rougher cells are combined in a tailings box and are pumped to the pyrite circuit (PLP). The rougher zinc concentrate is reground in vertical mills operating in closed circuit with cyclones. Product at a passing P80 of 30 µm is cleaned in a three-stage cleaner circuit. Reagents are added into the rougher and cleaner circuits on as-required basis. Numerous variations in mineralogy, head grade (specifically % S in the feed stream) and metallurgical response will cause potential fluctuations in the rougher and cleaner concentrate grades and metal recovery. Similarly, the performance of the regrind mill circuits, agitated leach extraction, and counter-current decant (CCD) washing efficiency will also be affected. Therefore, equipment specification includes a percentage variation allowance in both the feed and throughput characteristics.
The PLP circuit treats the zinc rougher tailing from the concentrator for recovery of residual gold and silver. The process comprises pyrite rougher and cleaner flotation, pre-cleaner concentrate regrinding, pyrite thickening, and post-cleaner regrind, agitated tank leaching, counter-current decantation, Merrill-Crowe precipitation, precious metals refining and a cyanide detoxification circuit. The PLP circuit produces doré bars. The tailing streams report to the existing TSF.
The major equipment list for the PLP circuit is included in Table 14-2.
Table 14-2:    Pyrite Leach Process Equipment List and Specifications
AreaParameterValue
Rougher flotationResidence time28 min
Cell arrangement
3 banks of 5 630 m3 tank cells
Pre-cleaner regrindConfigurationVertical mill in open circuit
Installed power3.5 MW
Cleaner flotationResidence time12.8 min
Cell arrangementSingle bank of 3 cells
High rate thickeningDiameter35 m
Post-cleaner regrindMill typeISAMILL
Number of mills4
Pre-leach flotationResidence time5 min
Cell arrangement
Single bank of three 130 m3 cells
Leach circuitResidence time24 h
Number of tanks1 pre-aeration/5 leaching
Counter current decantationNumber of stages (thickeners)4 high rate
Diameter30 m
Cyanide detoxificationResidence time4 h
Treatment method
Air/SO2
Number of tanks2 in series.
Metal recovery (Merill-Crowe)Design flow
1,969 m3/h
Clarification filters (horizontal pressure)5 operating/1 standby
Precipitation filters (plate and frame)5 operating/1 standby
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14.2.4    Tertiary Precious Metals Recovery Process
The tertiary precious metals recovery process has not been operated because, as of the Report date, the organic carbon grades had not been high enough to operate this circuit. It is expected that organic carbon grades will increase after mid-2022 and the circuit may become operational from that point onward.
The tertiary precious metals recovery circuit was installed to minimize precious metal lost with the carbon pre-flotation process carbon concentrate, and to indirectly recover precious metal value associated with the PLP pre-leach flotation concentrate, which will be directed to the carbon pre-treatment cleaner flotation cells. Without the tertiary precious metals recovery, the carbon concentrate and contained gold and silver values would be directed to tailings.
Final carbon concentrate from the carbon pre-treatment step would be directed to a gravity concentration circuit, consisting of 32 ultrafine gravity concentrators operating in parallel.
Feed from the carbon pre-flotation circuit would be pumped to a pressurized distributor that divides the dilute slurry into eight concentrator feed tanks. Each of the feed tanks would supply slurry to the four associated gravity concentrators. The concentrators would produce a precious metals concentrate that would be collected in a single pumpbox and pumped to both trains of the lead cleaner circuit. The concentrator tail would be collected in a launder and sent to final tailings by gravity. A sampler would be located on the tailing discharge for metallurgical accounting.
Ancillary services would include:
Dedicated low pressure compressors to deliver plant air;
Fresh water delivery system;
Gland water delivery system;
Process water for hose stations;
Instrument dry air;
The underflow Falcon units are rated to handle 20 m3/hr of slurry. With 32 operable units the maximum design flow is 640 m3/hr. The unit capacities are based on volumetric loading, with recommended solids densities in the feed between 5–15%. Based on testwork carried out to date, pulp densities in the feed to the underflow Falcon are likely to be in the range of 5% and contained solids less than 30 t/hr.
Site and corporate staff continue to study the impact of organic carbon, the expected performance of the tertiary precious metals recovery process plant, and other options for handling high organic carbon mineralization.
14.3    Energy, Water, and Process Materials Requirements
14.3.1    Energy
Newmont currently uses power sourced from Saavi Energia (formerly Intergen) located in San Luis de la Paz, Guanajuato as its central power grid; however, the Peñasquito Operations are still using Mexican Electricity Federal Commission infrastructure to bring the electricity from
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Guanajuato to Mazapil. The annual power consumption ranges from 165–175 MW per day. The processing plant accounts for around 85% of the total consumption.
14.3.2    Consumables
Reagents are typically trucked to site and stored onsite in quantities sufficient for mine usage, plus sufficient supply to cover potential interruptions in the delivery of the reagents. The major reagents include:
Sulfide plant: collectors, depressants, frothers and activators;
Precious metals plant: lime, flocculant and zinc.
Other consumables include grinding media, oxygen and air.
14.3.3    Water Supply
Water is sourced from several locations: the tailings storage facility (TSF), well fields, pit dewatering wells, and process operational recycle streams.
The operating philosophy is to maximize the amount of recycled water within the process plant, and a significant proportion of the total mine site water requirements is made up from recycled water. Fresh water is used only for reagent makeup and gland service water for the pumps.
14.4    Personnel
The process personnel required for the LOM plan total 754 including plant operations and maintenance.
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15.0    PROJECT INFRASTRUCTURE
15.1    Introduction
Site infrastructure comprises:
Two open pits: Peñasco and Chile Colorado;
Three waste rock facilities (with conveying and stacking system for the NPSC waste facility);
One concentrator plant and associated conveying systems;
One heap leach pad and Merrill Crowe plant;
Camp/accommodation complex;
Maintenance, administration and warehouse facilities;
TSF;
Medical clinic;
Various ancillary buildings;
Paved airstrip;
Diversion channels;
Pipelines and pumping systems for water and tailings;
Access roads;
Explosive storage facilities;
High-voltage transmission line;
Environmental monitoring facilities.
Figure 15-1 is an infrastructure layout plan for the Project.
15.2    Road and Logistics
Road access is outlined in Chapter 4.2. Within the Project area, access is by foot trails and tracks.
The Peñasquito mine has a 610 m long (2,000 ft) asphalt airstrip and associated terminal building.
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Figure 15-1:    Infrastructure Layout Plan
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Note: Figure prepared by Newmont, 2020.
15.3    Stockpiles
Stockpile classification is based on material types that require different treatment at the mill, with three major stockpile types, organic carbon (<0.30% C), low lead (<0.20% Pb), and high lead (>0.20% Pb). The high-lead stockpile is subdivided into three types, based on gold content, which are designated low (<0.30 g/t Au), medium (>0.30–<0.49 g/t au), and high (>0.50 g/t Au).
In late 2019, ore control started working on an estimation of a stockpile block model. The model was built using dumping locations and grades. These data are cross-checked with the weekly stockpile topographic surface to obtain more accurate grades by area. The block model grades are used to estimate short-term plans and to optimize blending.
15.4    Waste Rock Storage Facilities
The approximate 900 Mt of waste rock remaining to be mined in the LOM plan will be stored in a series of five waste rock storage facilities (WRSFs). The remaining storage capacity in these facilities is about 1,140 Mt. All facilities are located with Newmont’s overall operating area. The development schedule for each facility is based on an optimization of the overall haulage profile, the requirements for waste material for tailing storage, and the incorporation of additional haulage trucks into the current mining fleet.
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The current WRSF strategy does not consider pit backfilling. All of the WRSFs are located well beyond the crest of the ultimate pit; however, further optimization of the LOM waste storage plan will continue to be examined by Newmont, in an effort to further reduce haulage profiles and resulting unit mining costs.
The WRSF designs were reviewed by Golder, a third-party consultant. Factors of safety range from 1.2 to 1.3.
15.5    Tailings Storage Facilities
15.5.1    Tailings Storage
Four perimeter containment structures, the north, south, east, and west dams, provide containment of the tailings at the existing storage facility. The north, west, and south dams were constructed using centerline methods. The eastern dam is a geomembraned and bituminous geomembraned-lined water-retaining dam constructed of rockfill using a downstream raise configuration. The internal water reclaim pond is maintained against this structure. Key elements of the TSF include:
Whole tailings classification, transport and distribution systems (including pipelines and north and south cyclone stations);
Whole tailings dams (basin area);
Seepage collection system, including tanks, pumps, and pipelines;
Water reclaim system, including pumps, tanks, and pipelines (reclaim pond).
The TSF is currently constructed to an ultimate dam crest elevation of 1,867.2 masl; however, future plans for the TSF include its raising to 1,912.7 masl. The maximum storage allowed under the current tailings dam construction plan at elevation 1907.7 masl is 383 Mt, consisting of 356 Mt of stored tailings and 27 Mt of hydraulic sand construction.
Construction of an additional buttress commenced in 2017 with an approximate width of 80 m at the base. The buttress uses mine waste and continues to be developed as a stability measure.
15.5.2    Tailings Reclaim Pond
The water reclaim from the TSF originates from four sources: precipitation falling within the TSF footprint and contributing area; reclaim water from the tailing depositional process; seepage water that is returned to the TSF; and freshwater pumped from groundwater sources into the water reclaim pond.
15.5.3    External Ponds
Four ponds are sited to the east of the TSF, and are referred to as the external ponds. The ponds are designed to reduce the solids content of the reclaim water, as well as provide water storage to accommodate fluctuations in plant operations, fresh water supplies, precipitation, evaporation, and other variables that feed into the site-wide water balance.
15.6    Water Management
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15.6.1    Water Sources
The mine is located in Mazapil valley, which forms part of the Cedros administrative aquifer. Hydrologically, this aquifer is part of the Nazas Aguanaval sub-basin, which forms part of the Laguna de Mayrán y Viesca Regional Basin. Because there are no surface water resources, the water supply for the Peñasquito Operations is obtained from groundwater in the Cedros basin, from an area known as the Torres and Vergel well field.
The mine has received permits to pump up to 35.247 Mm³ of this water per year via eight water rights titles over the Torres and Vergel water well field and Northern Well field (NWF). The Torres and Vergel well field (16 wells) is being pumped at an average daily rate of approximately 31,000 m³ per day. The NWF well field extracts approximately 30,000 m³ per day (14 wells).
As much water as practicable is recycled.
Newmont continues to monitor the local aquifers to ensure they remain sustainable. A network of monitoring wells was established to monitor water levels and water quality.
15.6.2    Dewatering Activities
Dewatering wells from the open pit area are currently sufficient being pumped at an average rate of 27,500 m³/d. This rate as well as currently budgeted replacement wells is sufficient for LOM dewatering. Water is used by the mine and plant, as required.
15.6.3    Water Balance
A probabilistic water balance model was developed for the entire mine site including the plant, heap leach facilities, diversion channels, tailings facility, other users of water, and the water supply system. The software used for this water balance is the industry standard GoldSim modeling package. This model is tracked and updated on a monthly basis. Modelling allows Newmont to define initial and operating conditions within the Peñasquito mine system and simulate the projected performance of the mine water system over a given time period.
The mine is operated as a zero-discharge system. Peñasquito does not discharge process water to surface waters, and there are no direct discharges to surface waters.
15.6.4    Waste Water
All wastewater from the mine offices, camp and cafeteria is treated in a wastewater treatment plant prior to discharge to the environment.
All storm water is diverted from the main infrastructure facilities through use of diversion channels.
15.7    Camps and Accommodation
On-site accommodation comprises a 3,421-bed camp with full dining, laundry and recreational facilities.
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15.8    Power and Electrical
Power is currently supplied from the 182 MW power purchase agreement with Saavi Energia, delivered to the mine by the Mexican Federal Electricity Commission (Comisión Federal de Electricidad or CFE). CFE also continues to provide backup power supply for both planned and unplanned shutdowns from the Saavi Energia power plant.
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16.0    MARKET STUDIES AND CONTRACTS
16.1    Market Studies
Bullion from the Peñasquito Operations is sold on the spot market, by corporate in-house marketing experts. The terms in these contracts are in line with industry standard terms and are consistent with doré sold from other operations. The doré is not subject to product specification requirements.
Newmont has established contracts and buyers for its lead and zinc concentrate, and has a corporate internal marketing group that monitors markets for its concentrate. Together with public documents and analyst forecasts, these data support that there is a reasonable basis to assume that for the LOM plan, that the lead and zinc concentrate will be saleable at the assumed commodity pricing.
The lead concentrate produced at Peñasquito is marketed as a high gold and high silver, lead concentrate. Smelters operating their own precious metal refineries (with a strong ability to recover gold) at their lead smelting operations are best prepared to contract for Peñasquito lead concentrates. The zinc concentrate produced at Peñasquito is marketed as a high gold and high silver, zinc concentrate. Smelters with the ability to recover gold and silver from their zinc processes are best prepared to contract for Peñasquito zinc concentrates. Long-term contracts have been negotiated with smelters in Korea, Spain, Antwerp, Canada, Mexico and Japan for a large portion of the mine production of concentrates. The remaining production is tendered on the spot market. The pricing of the concentrate is driven by London Metal Exchange (LME) lead and zinc pricing, London Bullion Market Association (LBMA) gold and silver pricing, and annual processing benchmark terms negotiated by major industry players and published by third-party data providers.
There are no agency relationships relevant to the marketing strategies used.
16.2    Forward Sales Agreements
As of December 31, 2021, Newmont had not entered into forward sales agreements for the base metals volumes in relation to Peñasquito concentrate sales
16.3    Commodity Price Forecasts
Newmont uses a combination of historical and current contract pricing, contract negotiations, knowledge of its key markets from a long operations production record, short-term versus long-term price forecasts prepared by Newmont’s corporate internal marketing group, public documents, and analyst forecasts when considering long-term commodity price forecasts.
Higher metal prices are used for the mineral resource estimates to ensure the mineral reserves are a sub-set of, and not constrained by, the mineral resources, in accordance with industry-accepted practice.
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The long-term commodity price and exchange rate forecasts are:
Mineral reserves:
Gold: $1,200/oz;
Silver: $20/oz;
Lead: $0.90/lb;
Zinc: $1.15/lb;
Mexican peso to US$: 19.5.
Mineral resources:
Gold: $1,400/oz;
Silver: $23/oz;
Lead: $1.10/lb;
Zinc: $1,40/lb;
Mexican peso to US$: 19.5.
16.4    Contracts
Newmont has contracts in place for the majority of the lead and zinc concentrate. The terms contained within the concentrate sales contracts are typical and consistent with standard industry practice for lead and zinc concentrates with high gold and silver contents.
The contracts include industry benchmark terms for metal payables, treatment charges and refining charges for concentrates produced. Depending on the specific contract, the terms for the sale of the lead and zinc concentrates are either referenced to benchmark-based treatment and refining charges, or negotiated fixed terms.
Treatment charges assumed for estimation of mineral reserves are based forecasts published by third party data providers such as Wood Mackenzie or the CRU Group. The formula used for mineral reserves is sensitive to the underlying metal prices (gold, silver, lead, zinc) and is consistent with long-term expectations for lead and zinc treatment and gold and silver refining charges in lead concentrates.
Newmont’s bullion is sold on the spot market, by in house marketing experts. The terms in these contracts are in line with industry standard terms and are consistent with doré sold from other operations.
The largest in-place contracts other than for product sales cover items such as bulk commodities, operational and technical services, mining and process equipment, and administrative support services. Contracts are negotiated and renewed as needed. Contract terms are typical of similar contracts in Mexico that Newmont is familiar with.
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17.0    ENVIRONMENTAL STUDIES, PERMITTING, AND SOCIAL OR COMMUNITY IMPACT
17.1    Baseline and Supporting Studies
The key baseline studies completed over the Project area in support of the original environmental assessment and later Project expansion included:
Hydrogeology and groundwater quality;
Aquifer assessments;
Surface water quality and sediment;
Metals toxicity and acid mine drainage studies;
Air and climate;
Noise and vibration;
Vegetation;
Wildlife;
Conservation area management plan;
Biomass and carbon fixation studies;
Land use and resources;
Socio-economics.
17.2    Environmental Considerations/Monitoring Programs
Environmental monitoring is ongoing at the Project and will continue over the life of the operations. Key monitoring areas include air, water, noise, wildlife, forest resources and waste management.
Characterization studies of waste rock, pit walls, and tailings materials were undertaken to determine the acid rock drainage (ARD) and metal leaching (ML) potential. Peñasco and Chile Colorado waste rock was found to have low potential for acidic drainage from the oxidized waste rock lithologies. However, there was potential for waste rock with sulfides to oxidize to produce acidity; however, this could be controlled by adequate neutralization in these materials to overcome acidic drainage. Potentially acid-forming waste (PAG) materials and rock types that have ML potential are currently stored in the waste rock facilities and encapsulated with non-reactive rock. The tailings materials have somewhat higher potential to produce ARD and ML (selenium being the only metal potentially outside Mexican standards). Control of ARD and ML from tailings materials will be achieved through reclamation of the current TSF after its closure in 2027, concurrent with ongoing mining activities, and reclamation of the final TSF immediately after mine closure.
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17.3    Closure and Reclamation Considerations
A closure and reclamation plan was prepared for the mine site. The cost for this plan was calculated based on the standard reclamation cost estimator (SRCE) model which is based on the Nevada State regulations. The closure cost spending schedule was updated for the current mine life, and reflects anticipated expenditures prior to closure, during decommissioning and during the post-closure monitoring and maintenance period. Site closure costs are funded by allocating a percentage of sales revenue to closure activities.
The closure and reclamation plan also incorporates international best practices, including the World Bank Environment, Health and Safety Guidelines Mining and Milling - Open Pit, the Draft International Finance Corporation (IFC) Environmental, Health and Safety Guidelines – Mining, and the International Cyanide Management Code For the Manufacture, Transport, and Use of Cyanide in the Production of Gold.
Mexican legislation does not require the posting of reclamation or performance bonds.
Current 2021 asset retirement obligation (ARO) closure costs are estimated at approximately US$0.5 B for rehabilitation activities associated with existing disturbance.
The closure costs used in the economic analysis total US$0.8 B.
A comprehensive study is ongoing to potentially resettle the communities in close proximity to the mine - any such decision will require approval from the Newmont’s senior management, and will have impacts on future closure cost estimates.
17.4    Permitting
All major permits and approvals are in place to support operations. Where permits have specific terms, renewal applications are made of the relevant regulatory authority as required, prior to the end of the permit term.
Newmont monitors the regulatory regime in place at each of its operations and ensures that all permits are updated in line with any regulatory changes.
17.5    Social Considerations, Plans, Negotiations and Agreements
Public consultation and community assistance and development programs are ongoing.
Newmont, Ejido Cedros and Ejido Mazapil have established trust funds for locally-managed infrastructure, education and health projects. Newmont provides annual funding for these trusts. The communities around the Peñasquito mine also benefit from a number of programs and services provided, or supported, by the mine. In addition, the Peñasquito mine operates a forestry nursery that produces 3.5 million trees annually. These trees are used for reforestation around the mine and within the local communities.
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17.6    Qualified Person’s Opinion on Adequacy of Current Plans to Address Issues
Based on the information provided to the QP by Newmont (see Chapter 25), there are no material issues known to the QP. The Peñasquito Operations are mature mining operations and currently has the social license to operate within its local communities.
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18.0    CAPITAL AND OPERATING COSTS
18.1    Introduction
Capital and operating cost estimates are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
18.2    Capital Cost Estimates
Capital costs are based on recent prices or operating data. Capital costs include funding for infrastructure, pit dewatering, development drilling, and permitting as well as miscellaneous expenditures required to maintain production. Mobile equipment re-build/replacement schedules and fixed asset replacement and refurbishment schedules are included. Sustaining capital costs reflect current price trends.
The overall capital cost estimate for the LOM is US$1.1 B, as summarized in Table 18-1.
18.3    Operating Cost Estimates
Operating costs are based on actual costs seen during operations and are projected through the LOM plan. Historical costs are used as the basis for operating cost forecasts for supplies and services unless there are new contract terms for these items. Labor and energy costs are based on budgeted rates applied to headcounts and energy consumption estimates.
Operating costs for the LOM are estimated at US$7.4 B, as summarized in Table 1-14. The estimated LOM mining cost is US$2.03/t. Base processing costs are estimated at US$10.25/t. In addition, G&A costs are estimated at US$3.40/t.
Table 18-1:    Capital Cost Estimate
AreaUnitValue
MiningUS$ B0.3
ProcessUS$ B0.5
Site G&AUS$ B0.4
TotalUS$ b1.1
Note: Numbers have been rounded; totals may not sum due to rounding.
Table 18-2:    Operating Cost Estimate
AreaUnitValue
MiningUS$ B2.5
ProcessUS$ B3.7
G&AUS$ B1.2
TotalUS$ B7.4
Note: Numbers have been rounded; totals may not sum due to rounding.
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19.0    ECONOMIC ANALYSIS
19.1    Methodology Used
The financial model that supports the mineral reserve declaration is a standalone model that calculates annual cash flows based on scheduled ore production, assumed processing recoveries, metal sale prices and MXN$/US$ exchange rate, projected operating and capital costs and estimated taxes.
The financial analysis is based on an after-tax discount rate of 8%. All costs and prices are in unescalated “real” dollars. The currency used to document the cash flow is US$.
All costs are based on the 2022 budget. Revenue is calculated from the recoverable metals and long-term metal price and exchange rate forecasts.
19.2    Financial Model Parameters
The economic analysis is based on the metallurgical recovery predictions in Chapter 10.4, the mineral reserve estimates in Chapter 13, the mine plan discussed in Chapter 14, the commodity price forecasts in Chapter 16, closure cost estimates in Chapter 17.4, and the capital and operating costs outlined in Chapter 18. Royalties were summarized in Chapter 3.9.
The Peñasquito Operations are subject to a federal tax of 30%, and mining tax of 7.5%.
The economic analysis is reported on a 100% project ownership basis. The economic analysis assumes constant prices with no inflationary adjustments.
The NPV8% is US$1.7 B. As the cashflows are based on existing operations where all costs are considered sunk to 1 January 2022, considerations of payback and internal rate of return are not relevant.
A summary of the financial results is provided in Table 19-1. An annualized cashflow statement is provided in Table 19-2. In these tables, EBITDA = earnings before interest, taxes, depreciation and amortization. The active mining operation ceases in 2031; however, closure costs are estimated to 2071. The closure costs, from 2032–2071 total US$0.6 B.
19.3    Sensitivity Analysis
The sensitivity of the Project to changes in metal prices, exchange rate, sustaining capital costs and operating cost assumptions was tested using a range of 25% above and below the base case values (Figure 19-1).
The Project is most sensitive to metal price changes, less sensitive to changes in operating costs, and least sensitive to changes in capital costs.
The sensitivity to grade mirrors the sensitivity performed for the commodity prices and is not shown.
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Table 19-1:    Cashflow Summary Table
ItemUnitValue
Metal Prices
GoldUS$/oz1,200
SilverUS$/oz20
LeadUS$/lb0.90
ZincUS$/lb1.15
Mined Ore
TonnageMtonnes362
Gold gradeg/t0.54
Silver gradeg/t33.84
Lead grade%0.32
Zinc grade%0.78
Gold ouncesMoz6.3
Silver ouncesMoz394
Lead poundsBlb2.6
Zinc poundsBlb6.2
Capital costsUS$B1.1
Costs applicable to salesUS$B8.8
Discount rate%8
Exchange rateUnited States dollar:Mexican peso (USD:MXN)19.5
Free cash flowUS$B2.3
Net present valueUS$B1.7
Note: Numbers have been rounded; totals may not sum due to rounding. Table 19-1 contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbor created by such sections and other applicable laws. Please refer to the note regarding forward-looking information at the front of the Report. The cash flow is only intended to demonstrate the financial viability of the Project. Investors are cautioned that the above is based upon certain assumptions which may differ from Newmont’s long-term outlook or actual financial results, including, but not limited to commodity prices, escalation assumptions and other technical inputs. For example, Table 19-1 uses the price assumptions stated in the table, including a gold commodity price assumption of US$1,200/oz, which varies significantly from current gold prices and the assumptions that Newmont uses for its long-term guidance. Please be reminded that significant variation of metal prices, costs and other key assumptions may require modifications to mine plans, models, and prospects.
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Table 19-2:    Annualized Cashflow (2022–2032)
ItemUnitsTotal20222023202420252026202720282029203020312032
Material minedM tonnes1,26219319316915214011696666534
Ore processedM tonnes36237343739383637353733
Contained gold, processedMoz6.30.80.70.90.50.60.70.50.40.80.30.0
Contained silver, processedMoz39440434752353736284233
Contained lead, processedMlbs2,576231269338307207321250239264151
Contained zinc, processedMlbs6,249567655822851665630524409742384
Processed ore gold gradeg/t0.540.630.640.790.410.510.610.440.370.700.33
Processed ore silver gradeg/t33.8433.4839.8438.8942.0329.0732.5130.3624.3835.5131.81
Processed ore lead grade%0.320.280.360.410.360.250.410.310.310.330.210.00
Processed ore zinc grade%0.780.690.881.001.000.800.800.640.530.920.530.00
Recovered goldMoz4.30.50.50.70.30.40.50.30.20.60.20.0
Recovered silverMoz34035374145313331233728
Recovered leadMlbs1,873163189256235146247175157199106
Recovered zincMlbs5,043452524676703538513415311611301
Recovery, gold%68706571666669655971640
Recovery, silver%86878688868688858289850
Recovery, lead%73717076777177706676700
Recovery, zinc%81808082838181797682780
Net revenue US$ B14.81.61.62.01.71.41.61.30.91.81.00.0
Costs applicable to salesUS$ B-8.8-1.0-1.0-1.0-1.0-0.9-0.9-0.9-0.8-0.8-0.60.0
Other expensesUS$ B-0.5-0.10.00.00.00.00.00.00.00.00.00.0
EBITDAUS$ B5.50.50.61.00.70.40.60.30.11.00.40.0
Operating cash flow (after estimated taxes and other adjustments)US$ B3.50.30.30.60.50.30.40.30.20.60.40.0
Total capitalUS$ B-1.1-0.1-0.2-0.2-0.1-0.1-0.1-0.1-0.1-0.1-0.10.0
Free cash flowUS$ B2.30.10.20.40.40.20.30.20.10.50.30.0
Note: Numbers have been rounded; totals may not sum due to rounding. EBITDA = earnings before interest, taxes, depreciation and amortization. Table 19-2 contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbor created by such sections and other applicable laws. Please refer to the note regarding forward-looking information at the front of the Report. The cash flow is only intended to demonstrate the financial viability of the Project. Investors are cautioned that the above is based upon certain assumptions which may differ from Newmont’s long-term outlook or actual financial results, including, but not limited to commodity prices, escalation assumptions and other technical inputs. For example, Table 19-2 uses the price assumptions stated in the table, including a gold commodity price assumption of US$1,200/oz, which varies significantly from current gold prices and the assumptions that Newmont uses for its long-term guidance. Please be reminded that significant variation of metal prices, costs and other key assumptions may require modifications to mine plans, models, and prospects.
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Figure 19-1:    NPV Sensitivity
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Note: Figure prepared by Newmont, 2021. FCF = free cashflow; op cost = operating cost; cap cost = capital cost; NPV = net present value.
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20.0    ADJACENT PROPERTIES
This Chapter is not relevant to this Report.
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21.0    OTHER RELEVANT DATA AND INFORMATION
This Chapter is not relevant to this Report.
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22.0    INTERPRETATION AND CONCLUSIONS
22.1    Introduction
The QP notes the following interpretations and conclusions, based on the review of data available for this Report.
22.2    Property Setting
The Peñasquito Operations are situated in an area that has had modern mining activities underway for about 14 years. As a result, local and regional infrastructure and the supply of goods available to support mining operations is well-established. Personnel with experience in mining-related activities are available in the district. Transportation routes access the Peñasquito Operations area.
There are no significant topographic or physiographic issues that would affect the Peñasquito Operations. The dominant vegetation types are cactus and coarse grasses.
Mining operations are conducted year-round.
22.3    Ownership
Newmont uses an indirectly 100% owned subsidiary, Minera Peñasquito SA de C.V. (Minera Peñasquito), as the operating entity for the mining operations.
22.4    Mineral Tenure, Surface Rights, Water Rights, Royalties and Agreements
Newmont currently holds 77 mining concessions (approximately 82,632 ha).
Surface rights in the vicinity of the Chile Colorado and Peñasco open pits are held by four ejidos. Newmont has entered into agreements with a number of ejidos in relation to surface rights, either for mining or exploration activities.
Newmont has active water extraction permits.
Wheaton pays Newmont a per-ounce cash payment of the lesser of US$3.90 and the prevailing market price (subject to an inflationary adjustment that commenced in 2011), for silver delivered under a streaming contract.
A 2% net smelter return (NSR) royalty is payable to Royal Gold on production from the Chile Colorado and Peñasco deposits. The Mexican Government levies a 7.5% mining royalty that is imposed on earnings before interest, taxes, depreciation, and amortization. There is also a 0.5% environmental erosion fee payable on precious based on gross revenues.
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22.5    Geology and Mineralization
The deposits within the Peñasquito Operations are considered to be examples of breccia pipe deposits developed as a result of intrusion-related hydrothermal activity.
The geological understanding of the settings, lithologies, and structural and alteration controls on mineralization in the different zones is sufficient to support estimation of mineral resources and mineral reserves. The geological knowledge of the area is also considered sufficiently acceptable to reliably inform mine planning.
The mineralization style and setting are well understood and can support declaration of mineral resources and mineral reserves.
Significant potential exists at depth below the current operating pits within the current diatreme bodies as well as skarn and mantos mineralization within the surrounding limestone units. Additionally, the surrounding district has relatively little exploration work completed.
22.6    History
The Peñasquito Operations have over 14 years of active mining history, and exploration activities date back to 1994 when the diatremes were first discovered.
22.7    Exploration, Drilling, and Sampling
The exploration programs completed to date are appropriate for the style of the mineralization within the Peñasquito Operations area.
Drilling is normally perpendicular to the strike of the mineralization. Depending on the dip of the drill hole, and the dip of the mineralization, drill intercept widths are typically greater than true widths.
Sampling methods, sample preparation, analysis and security conducted prior to Newmont’s interest in the operations were in accordance with exploration practices and industry standards at the time the information was collected. Current Newmont sampling methods are acceptable for mineral resource and mineral reserve estimation. Sample preparation, analysis and security for the Newmont programs are currently performed in accordance with exploration best practices and industry standards.
The quantity and quality of the lithological, geotechnical, collar and down-hole survey data collected during the exploration and delineation drilling programs are sufficient to support mineral resource and mineral reserve estimation. The collected sample data adequately reflect deposit dimensions, true widths of mineralization, and the style of the deposits. Sampling is representative of the gold and copper grades in the deposit, reflecting areas of higher and lower grades.
Density measurements are considered to provide acceptable density values for use in mineral resource and mineral reserve estimation.
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The sample preparation, analysis, quality control, and security procedures used by the Peñasquito Operations have changed over time to meet evolving industry practices. Practices at the time the information was collected were industry-standard, and frequently were industry-leading practices. The sample preparation, analysis, quality control, and security procedures are sufficient to provide reliable data to support estimation of mineral resources and mineral reserves.
The QA/QC programs adequately address issues of precision, accuracy and contamination. Modern drilling programs typically included blanks, duplicates and standard samples. QA/QC submission rates meet industry-accepted standards.
22.8    Data Verification
Newmont has data collection procedures in place that include several verification steps designed to ensure database integrity. Newmont staff also conducted regular logging, sampling, laboratory and database reviews. In addition to these internal checks, Newmont contracted independent consultants to perform laboratory, database and mine study reviews. The process of active database quality control and internal and external audits generally resulted in quality data.
The data verification programs concluded that the data collected from the Peñasquito Operations area adequately support the geological interpretations and constitute a database of sufficient quality to support the use of the data in mineral resource and mineral reserve estimation.
Data that were verified on upload to the database are acceptable for use in mineral resource and mineral reserve estimation.
The QP receives and reviews monthly reconciliation reports from the mine site. Through the review of these reconciliation factors the QP is able to ascertain the quality and accuracy of the data and its suitability for use in the assumptions underlying the mineral resource and mineral reserve estimates.
22.9    Metallurgical Testwork
Industry-standard studies were performed as part of process development and initial mill design. Subsequent production experience and focused investigations guided mill alterations and process changes. Testwork programs, both internal and external, continue to be performed to support current operations and potential improvements. From time to time, this may lead to requirements to adjust cut-off grades, modify the process flowsheet, or change reagent additions and plant parameters to meet concentrate quality, production, and economic targets.
Samples selected for testing were representative of the various types and styles of mineralization. Samples were selected from a range of depths within the deposit. Sufficient samples were taken so that tests were performed on sufficient sample mass.
Recovery factors estimated are based on appropriate metallurgical testwork, and are appropriate to the mineralization types and the selected process routes. However, the mineralogical complexity of the Peñasquito ores makes the development of recovery models difficult as eight elements (gold, silver, lead, zinc, copper, iron, arsenic, and antimony) are
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tracked through the process. Recovery models need to be sufficiently robust to allow for changes in mineralogy and plant operations, while providing reasonable predictions of concentrate quality and tonnage. LOM recovery forecasts the sulfide plant are 69% for gold, 87% for silver, 73% for lead, and 81% for zinc.
The mill throughput and associated recovery factors are considered appropriate to support mineral resource and mineral reserve estimation, and mine planning.
Sulfosalts can carry varying amounts of deleterious elements such as arsenic, antimony, copper and mercury. At the date of this Report, the processing plant, in particular the flotation portion of the circuit, does not separate the copper-bearing minerals from the lead minerals, so when present the sulfosalts report (primarily) to the lead concentrate. The future impact of the deleterious elements is thus highly dependent on the lead–copper ratio in ores. There is no direct effect of deleterious elements on the recovery of precious and base metals. The marketing contracts are structured to allow for small percentages of these deleterious elements to be incorporated into the final product, with any exceedances then incurring nominal penalties.
One small area of the mine was defined as containing above-average mercury grades. Due to its limited size, blending should be sufficient to minimize the impact of mercury from this area on concentrate quality.
Organic carbon has also been recognized as a deleterious element affecting the recovery of gold and the operational cost in the process plant. The carbon pre-flotation process was built to allow for removal of liberated organic carbon ahead of lead and zinc flotation and the pyrite leach plant, so that those process steps could operate in a similar fashion to operation with low-carbon ores.
22.10    Mineral Resource Estimates
Newmont has a set of protocols, internal controls, and guidelines in place to support the mineral resource estimation process, which the estimators must follow.
Estimation was performed by Newmont personnel. All mineralogical information, exploration boreholes and background information were provided to the estimators by the geological staff at the mines or by exploration staff. Modelling was performed in Leapfrog and MineSight software.
Mineral resources are reported using the mineral resource definitions set out in SK1300, and are reported exclusive of those mineral resources converted to mineral reserves. The reference point for the estimate is in situ.
Areas of uncertainty that may materially impact the mineral resource estimates include: changes to long-term commodity price assumptions; changes in local interpretations of mineralization geometry and continuity of mineralized zones; changes to geological shape and continuity assumptions; changes to metallurgical recovery assumptions; changes to the operating cut-off assumptions for mill feed or stockpile feed; changes to the input assumptions used to derive the conceptual open pit outlines used to constrain the estimate; changes to the cut-off grades used to constrain the estimates; variations in geotechnical, hydrogeological and mining assumptions; changes to governmental regulations, changes to environmental assessments, and changes to environmental, permitting and social license assumptions.
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22.11    Mineral Reserve Estimates
Mineral reserves were converted from measured and indicated mineral resources. Inferred mineral resources were set to waste. Estimation was performed by Newmont personnel.
The mine plan is based on a 36 Mt/a mill throughput. The schedule was developed at an NSR cut-off of US$14.61/t, incorporating the processing cost, metallurgical recovery, incremental ore mining costs, process sustaining capital and tailings dam related rehabilitation costs. The net revenue calculation assumes a gold price of US$1,200/oz, silver price of US$20/oz, lead price of US$0.90/lb and a zinc price of US$1.15/lb. The assumed exchange rate for mineral reserves was 19.5 Mexican pesos per US$. Mineral reserves are reported above an NSR cut-off of US$14.61/t.
The block models were constructed to include the expected dilution based on mining methods, bench height and other factors. The current mine and process reconciliation appears to support this assumption.
Stockpile estimates were based on mine dispatch data; the grade comes from closely-spaced blasthole sampling and tonnages were sourced from truck factors.
Mineral reserves are reported using the mineral reserve definitions set out in SK1300 The reference point for the point of delivery to the process plant.
Areas of uncertainty that may materially impact the mineral reserve estimates include: changes to long-term metal price and exchange rate assumptions; changes to metallurgical recovery assumptions; changes to the input assumptions used to derive the pit designs applicable to the open pit mining methods used to constrain the estimates; changes to the forecast dilution and mining recovery assumptions; changes to the cut-off values applied to the estimates; variations in geotechnical (including seismicity), hydrogeological and mining method assumptions; and changes to environmental, permitting and social license assumptions.
22.12    Mining Methods
Open pit mining is conducted using conventional techniques and an Owner-operated conventional truck and shovel fleet.
Open pit designs were assessed and reviewed prior to pit excavation to ensure adequacy and integrity of design geometry with consideration to ground conditions. As mining operations progress in the pit, additional geotechnical drilling and stability analysis will continue to be conducted to support optimization of the geotechnical parameters in the LOM designs.
A combination of Newmont staff and external consultants have developed the pit water management program, completed surface water studies, and estimated the life- of-mine site water balance. Management of water inflows to date have been appropriate, and no hydrological issues that could impact mining operations have been encountered.
The Peñasquito pit has four remaining stages (Phases 6 to 9), and will be excavated to a total depth of 780 m. The Chile Colorado pit has one remaining stage (Phase 2), and will reach 461 m ultimate depth. An ore stockpiling strategy is practiced.
The remaining mine life is 10 years, with the last year, 2031, being a partial year.
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As part of day-to-day operations, Newmont will continue to perform reviews of the mine plan and consider alternatives to, and variations within, the plan. Alternative scenarios and reviews may be based on ongoing or future mining considerations, evaluation of different potential input factors and assumptions, and corporate directives.
22.13    Recovery Methods
Active loading of the heap leach pads ceased in 2020. The heap leach pad is being recirculated with water while closure plans are under development.
The process plant design was based on a combination of metallurgical testwork, previous study designs, previous operating experience. The design is conventional to the mining industry and has no novel parameters.
The plant will produce variations in recovery due to the day-to-day changes in ore type or combinations of ore type being processed. These variations are expected to trend to the forecast recovery value for monthly or longer reporting periods.
A pyrite leach process circuit treats the zinc rougher tailing from the concentrator for recovery of residual gold and silver, and produces doré bars.
The tertiary precious metals recovery process has not been commissioned because, as of the Report date, the organic carbon grades had not been high enough to operate this circuit. It is expected that organic carbon grades will increase after mid-2022 and the circuit will become operational from that point onward.
22.14    Infrastructure
The majority of the key infrastructure to support the mining activities envisaged in the LOM is in place. Personnel reside in an on-site accommodation complex.
Waste is stored in a series of WRSFs, which have sufficient capacity for the LOM plan. The current WRSF strategy does not consider pit backfilling. All of the WRSFs are located well beyond the crest of the ultimate pit; however, further optimization of the LOM waste storage plan will continue to be examined by Newmont, in an effort to further reduce haulage profiles and resulting unit mining costs.
There is sufficient capacity within the TSF for the current LOM plan.
Within Newmont’s ground holdings, there is sufficient area to allow construction of any additional infrastructure that may be required in the future.
Water supply for the Peñasquito Operations is obtained from groundwater. Newmont continues to monitor the local aquifers to ensure they remain sustainable. A network of monitoring wells was established to monitor water levels and water quality.
Power is currently supplied from the 182 MW power purchase agreement with Saavi Energia, delivered to the mine by the Mexican Federal Electricity Commission. The Federal Electricity Commission continues to provide backup power supply for both planned and unplanned shutdowns from the Saavi Energia power plant.
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22.15    Market Studies
Newmont has established contracts and buyers for its lead and zinc concentrate, and has a corporate internal marketing group that monitors markets for its concentrate. Together with public documents and analyst forecasts, these data support that there is a reasonable basis to assume that for the LOM plan, that the lead and zinc concentrate will be saleable at the assumed commodity pricing.
Doré is sold on the spot market, by corporate in-house marketing experts. The terms in these contracts are in line with industry standard terms and are consistent with doré sold from other operations. The doré is not subject to product specification requirements.
The largest in-place contracts other than for product sales cover items such as bulk commodities, operational and technical services, mining and process equipment, and administrative support services. Contracts are negotiated and renewed as needed. Contract terms are typical of similar contracts in Mexico that Newmont is familiar with.
22.16    Environmental, Permitting and Social Considerations
Baseline and supporting environmental studies were completed to assess both pre-existing and ongoing site environmental conditions, as well as to support decision-making processes during operations start-up. Characterization studies were completed. Environmental monitoring is ongoing at the Project and will continue over the life of the operations. Key monitoring areas include air, water, noise, wildlife, forest resources and waste management.
The closure costs used in the economic analysis total US$0.8 B.
All major permits and approvals are either in place or Newmont expects to obtain them in the normal course of business. Where permits have specific terms, renewal applications are made of the relevant regulatory authority as required, prior to the end of the permit term.
Public consultation and community assistance and development programs are ongoing.
22.17    Capital Cost Estimates
Capital costs were based on recent prices or operating data and are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Capital costs included funding for infrastructure, pit dewatering, development drilling, and permitting as well as miscellaneous expenditures required to maintain production. Mobile equipment re-build/replacement schedules and fixed asset replacement and refurbishment schedules were included. Sustaining capital costs reflected current price trends.
The overall capital cost estimate for the LOM is US$1.1 B.
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22.18    Operating Cost Estimates
Operating costs were based on actual costs seen during operations and are projected through the LOM plan, and are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Historical costs were used as the basis for operating cost forecasts for supplies and services unless there are new contract terms for these items. Labor and energy costs were based on budgeted rates applied to headcounts and energy consumption estimates.
The overall operating cost estimate for the LOM is US$7.4 B.
22.19    Economic Analysis
The NPV8% is US$1.7 B. As the cashflows are based on existing operations where all costs are considered sunk to 1 January 2022, considerations of payback and internal rate of return are not relevant.
22.20    Risks and Opportunities
22.20.1    Risks
The risks associated with the Peñasquito Operations are generally those expected with open pit mining operations and include the accuracy of the resource model, unexpected geological features that cause geotechnical issues, and/or operational impacts.
Other risks noted include:
Commodity price increases for key consumables such as diesel, electricity, tires and chemicals would negatively impact the stated mineral reserves and mineral resources;
Labor cost increases or productivity decreases could also impact the stated mineral reserves and mineral resources, or impact the economic analysis that supports the mineral reserves;
Geotechnical and hydrological assumptions used in mine planning are based on historical performance, and to date historical performance has been a reasonable predictor of current conditions. Any changes to the geotechnical and hydrological assumptions could affect mine planning, affect capital cost estimates if any major rehabilitation is required due to a geotechnical or hydrological event, affect operating costs due to mitigation measures that may need to be imposed, and impact the economic analysis that supports the mineral reserve estimates;
The mineral resource estimates are sensitive to metal prices. Lower metal prices require revisions to the mineral resource estimates;
Risk to assumed process recoveries if the organic carbon present cannot be successfully mitigated during processing;
While there is sufficient space within the TSF for the planned LOM operations, if mineral resources are converted to mineral reserves, additional storage capacity will be required. Any expansion of the TSF is likely to require community relocation;
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There are communities that are within the zone of influence of the TSF that can potentially be affected by control failures at the TSF. Newmont continues to study relocation options for these communities, but there is a risk that impacted stakeholders are not amenable to relocation;
While water supplies are well understood for the LOM operations, supplementary water studies would be required if additional mineral reserves are added to the LOM plan in the future;
Climate changes could impact operating costs and ability to operate;
Assumptions that the long-term reclamation and mitigation of the Peñasquito Operations can be appropriately managed within the estimated closure timeframes and closure cost estimates;
Political risk from challenges to:
Mining licenses;
Environmental permits;
Newmont’s right to operate;
Changes to assumptions as to governmental tax or royalty rates, such as taxation rate increases or new taxation or royalty imposts.
22.20.2    Opportunities
Opportunities for the Peñasquito Operations include moving the stated mineral resources into mineral reserves through additional drilling and study work. The mineral reserves and mineral resources are based on conservative price estimates for gold, silver, lead, and zinc so upside exists, either in terms of the potential to estimate additional mineral reserves and mineral resources or improved economics should the price used for these metals be increased.
Opportunities include:
Conversion of some or all of the measured and indicated mineral resources currently reported exclusive of mineral reserves to mineral reserves, with appropriate supporting studies;
Upgrade of some or all of the inferred mineral resources to higher-confidence categories, such that better-confidence material could be used in mineral reserve estimation;
Higher metal prices than forecast could present upside sales opportunities and potentially an increase in predicted Project economics;
Newmont holds a significant ground package around the Peñasquito Operations that retains exploration potential.
22.21    Conclusions
Under the assumptions presented in this Report, the Peñasquito Operations have a positive cash flow, and mineral reserve estimates can be supported.
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23.0    RECOMMENDATIONS
As the Peñasquito Operations are an operating mine, the QP has no material recommendations to make.
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24.0    REFERENCES
24.1    Bibliography
Ashby, Z., and Hanson, W.C., 2003: Minera Peñasquito, S.A. De C.V., Preliminary Mineral Resource Estimate: NI 43-101 technical report prepared by SNC Lavalin for Western Silver Corporation, March 2003.
Belanger, M., and Pareja, G., 2014: Peñasquito Polymetallic Operation Zacatecas State Mexico, NI 43-101 Technical Report: NI 43-101 technical report prepared for Goldcorp, effective date 8 January 2014.
Belanger, M., Pareja, G., Chen, E. and Nahan, P., 2011: Peñasquito Polymetallic Operation, Zacatecas State, Mexico, NI 43-101 Technical Report, unpublished NI 43-101 technical report prepared for Goldcorp, effective date 31 December 2011.
Bryson, R.H., Brown, F.H., Rivera, R., and Butcher, M.G., 2009: Peñasquito Project Technical Report, Concepción del Oro District, Zacatecas State, México: unpublished NI 43-101 technical report prepared for Goldcorp, effective date 10 March 2009.
Bryson, R.H., Brown, F.H., Rivera, R., and Ristorcelli, S., 2007: Peñasquito Project Technical Report, Concepción del Oro District, Zacatecas State, México: unpublished NI 43-101 technical report prepared for Goldcorp, effective date 31 December 2007.
Canadian Institute of Mining, Metallurgy and Petroleum (CIM), 2014: CIM Standards for Mineral Resources and Mineral Reserves, Definitions and Guidelines: Canadian Institute of Mining, Metallurgy and Petroleum.
De Rujiter, A., Goodman, S., Pareja, G., and Redmond, D., 2015: Peñasquito Polymetallic Operation Zacatecas State México, NI 43-101 Technical Report: NI 43-101 technical report prepared for Goldcorp, effective date 31 December 2015.
Goldcorp, 2014: Copia de PSQ - Base Case V174 - Send to Vancouver: Excel spreadsheet, December 20, 2013.
Independent Mining Consultants, 2005: Executive Summary of the Technical Report Preliminary Resource Estimate Update for the Peñasco Deposit, Peñasquito Project State of Zacatecas, Mexico: unpublished NI 43-101 technical report prepared by Independent Mining Consultants for Western Silver Corporation, April 2005.
M3 Engineering and Technology Corp., 2004: Western Silver Corporation, Peñasquito Pre-Feasibility Study: unpublished NI 43-101 technical report prepared by Independent Mining Consultants for Western Silver Corporation, April 2004; amended and restated 8 November 2004, further amended and restated 10 December 2004.
Marek, J., Hanks, J.T., Wythes, T.J., Huss, C.E., and Pegnam, M.L., 2005: Peñasquito Feasibility Study Volume I NI 43-101 Technical Report: unpublished NI 43-101 technical report prepared by M3 Engineering and Technology Corp. for Western Silver Corporation, November 2005.
Marlow, J., 2004: Technical Report, Preliminary Resource Estimate, for the Peñasco Deposit Peñasquito Project State of Zacatecas, Mexico: unpublished NI 43-101 technical report prepared for Western Silver Corporation, effective date 3 November 2004.
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Redmond, D., Goodman, S., Pareja, G., De Ruijter, 2015: Peñasquito Polymetallic Operations, Zacatecas State, México, NI 43-101 Technical Report: NI 43-101 technical report prepared for Goldcorp, effective date 31 December 2015
SNC Lavalin, 2004: Minera Penasquito, S.A. De C.V., Peñasquito Project, Mineral Resource Estimate for Chile Colorado Zone: unpublished NI 43-101 technical report prepared by SNC Lavalin for Western Silver Corporation, March 2004.
Vdovin, V., Pareja, G., and Lind, P., 2018: Peñasquito Polymetallic Operation, Zacatecas State, Mexico, NI 43-101 Technical Report: report prepared for Goldcorp Inc., effective date 30 June, 2018.
Voorhees J.S., Hanks, J.T., Drielick, T.L., Wythes, T.J., Huss, C.E., Pegnam, M.L., and Johnson, J.M., 2008: Peñasquito Feasibility Study, 100,000 Mtpd, NI 43-101 Technical Report: unpublished NI 43-101 technical report prepared by M3 Engineering and Technology Corp. for Glamis Gold Inc., effective date 31 July 2006.
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24.2    Abbreviations and Symbols
Abbreviation/SymbolTerm
AAatomic absorption
ARDacid rock drainage
CCDcounter-current decantation
CIMCanadian Institute of Mining, Metallurgy and Petroleum
DGPSdifferential global positioning system
FAfire assay
G&Ageneral and administrative
GPSglobal positioning system
HPGRhigh pressure grinding roller
ICP-AESinductively coupled plasma atomic emission spectroscopy
ICP-MSinductively coupled plasma–mass spectrometry
ICP-OESinductively coupled plasma optical emission spectroscopy
ID2inverse distance to the power of two
IFCInternational Finance Corporation
IPinduced polarization
LECOAnalyzer designed for wide-range measurement of carbon and sulfur content of mineralization
LBMALondon Bullion Market Association (now known simply as LBMA)
LGLerchs–Grossmann
LMELondon Metal Exchange
LOMlife-of-mine
MXNMexican
NewFieldsNewFields Consultants Inc.
NewmontNewmont Corporation
NNnearest neighbor
NWFNorthern Well field
NPSCnear-pit sizing conveyor
NPVnet present value
NSRnet smelter return
QSPQuartz–sericite–pyrite alteration
QSPCQuartz–sericite–pyrite–calcite alteration
OESoptical emission spectrometry
PAGpotentially acid-generating
PCPyrite calcite alteration
PLPpyrite leach process
QA/QCQuality assurance and quality control
QPQualified Person
RABrotary air blast
RCreverse circulation
RQDrock quality description
SAGsemi-autogenous grind
SGSpecific gravity
SMESociety for Mining, Metallurgy and Exploration
SRCEstandard reclamation cost estimator
TSFtailing storage facility
USUnited States
US$United States dollar
WRSFwaste rock storage facility
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24.3    Glossary of Terms
TermDefinition
acid rock drainage/ acid mine drainageCharacterized by low pH, high sulfate, and high iron and other metal species.
alluviumUnconsolidated terrestrial sediment composed of sorted or unsorted sand, gravel, and clay that was deposited by water.
ANFOA free-running explosive used in mine blasting made of 94% prilled aluminum nitrate and 6% No. 3 fuel oil.
aquiferA geologic formation capable of transmitting significant quantities of groundwater under normal hydraulic gradients.
azimuthThe direction of one object from another, usually expressed as an angle in degrees relative to true north. Azimuths are usually measured in the clockwise direction, thus an azimuth of 90 degrees indicates that the second object is due east of the first.
ball millA piece of milling equipment used to grind ore into small particles. It is a cylindrical shaped steel container filled with steel balls into which crushed ore is fed. The ball mill is rotated causing the balls themselves to cascade, which in turn grinds the ore.
bullionUnrefined gold and/or silver mixtures that have been melted and cast into a bar or ingot.
carbonaceousContaining graphitic or hydrocarbon species, e.g., in an ore or concentrate; such materials generally present some challenge in processing, e.g., preg-robbing characteristics.
comminution/crushing/grindingCrushing and/or grinding of ore by impact and abrasion. Usually, the word "crushing" is used for dry methods and "grinding" for wet methods. Also, "crushing" usually denotes reducing the size of coarse rock while "grinding" usually refers to the reduction of the fine sizes.
concentrateThe concentrate is the valuable product from mineral processing, as opposed to the tailing, which contains the waste minerals. The concentrate represents a smaller volume than the original ore
counter-current decantation (CCD)A process where a slurry is thickened and washed in multiple stages, where clean water is added to the last thickener, and overflows from each thickener are progressively transferred to the previous thickener, countercurrent to the flow of thickened slurry.
cut-off gradeA grade level below which the material is not “ore” and considered to be uneconomical to mine and process. The minimum grade of ore used to establish reserves.
data verificationThe process of confirming that data was generated with proper procedures, was accurately transcribed from the original source and is suitable to be used for mineral resource and mineral reserve estimation
densityThe mass per unit volume of a substance, commonly expressed in grams/ cubic centimeter.
diatremeA volcanic vent or pipe that formed when magma was forced through flat-lying sedimentary rock
dilutionWaste of low-grade rock which is unavoidably removed along with the ore in the mining process.
easement
Areas of land owned by the property owner, but in which other parties, such as utility companies, may have limited rights granted for a specific purpose.
EMGeophysical method, electromagnetic system, measures the earth's response to electromagnetic signals transmitted by an induction coil
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TermDefinition
encumbrance
An interest or partial right in real property which diminished the value of ownership, but does not prevent the transfer of ownership. Mortgages, taxes and judgements are encumbrances known as liens. Restrictions, easements, and reservations are also encumbrances, although not liens.
feasibility study
A feasibility study is a comprehensive technical and economic study of the selected development option for a mineral project, which includes detailed assessments of all applicable modifying factors, as defined by this section, together with any other relevant operational factors, and detailed financial analysis that are necessary to demonstrate, at the time of reporting, that extraction is economically viable. The results of the study may serve as the basis for a final decision by a proponent or financial institution to proceed with, or finance, the development of the project.
A feasibility study is more comprehensive, and with a higher degree of accuracy, than a pre-feasibility study. It must contain mining, infrastructure, and process designs completed with sufficient rigor to serve as the basis for an investment decision or to support project financing.
flotationSeparation of minerals based on the interfacial chemistry of the mineral particles in solution. Reagents are added to the ore slurry to render the surface of selected minerals hydrophobic. Air bubbles are introduced to which the hydrophobic minerals attach. The selected minerals are levitated to the top of the flotation machine by their attachment to the bubbles and into a froth product, called the "flotation concentrate." If this froth carries more than one mineral as a designated main constituent, it is called a "bulk float". If it is selective to one constituent of the ore, where more than one will be floated, it is a "differential" float.
flowsheetThe sequence of operations, step by step, by which ore is treated in a milling, concentration, or smelting process.
frotherA type of flotation reagent which, when dissolved in water, imparts to it the ability to form a stable froth
gangueThe fraction of ore rejected as tailing in a separating process. It is usually the valueless portion, but may have some secondary commercial use
gravity concentratorUses the differences in specific gravity between gold and gangue minerals to realize a separation of the gold from the gangue.
heap leachingA process whereby valuable metals, usually gold and silver, are leached from a heap or pad of crushed ore by leaching solutions percolating down through the heap and collected from a sloping, impermeable liner below the pad.
high pressure grinding rolls (HPGR)A type of crushing machine consisting of two large studded rolls that rotate inwards and apply a high pressure compressive force to break rocks.
indicated mineral resourceAn indicated mineral resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of adequate geological evidence and sampling. The term adequate geological evidence means evidence that is sufficient to establish geological and grade or quality continuity with reasonable certainty. The level of geological certainty associated with an indicated mineral resource is sufficient to allow a qualified person to apply modifying factors in sufficient detail to support mine planning and evaluation of the economic viability of the deposit.
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TermDefinition
inferred mineral resource
An inferred mineral resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of limited geological evidence and sampling. The term limited geological evidence means evidence that is only sufficient to establish that geological and grade or quality continuity is more likely than not. The level of geological uncertainty associated with an inferred mineral resource is too high to apply relevant technical and economic factors likely to influence the prospects of economic extraction in a manner useful for evaluation of economic viability.
A qualified person must have a reasonable expectation that the majority of inferred mineral resources could be upgraded to indicated or measured mineral resources with continued exploration; and should be able to defend the basis of this expectation before his or her peers.
initial assessmentAn initial assessment is a preliminary technical and economic study of the economic potential of all or parts of mineralization to support the disclosure of mineral resources. The initial assessment must be prepared by a qualified person and must include appropriate assessments of reasonably assumed technical and economic factors, together with any other relevant operational factors, that are necessary to demonstrate at the time of reporting that there are reasonable prospects for economic extraction. An initial assessment is required for disclosure of mineral resources but cannot be used as the basis for disclosure of mineral reserves
internal rate of return (IRR)The rate of return at which the Net Present Value of a project is zero; the rate at which the present value of cash inflows is equal to the present value of the cash outflows.
IPGeophysical method, induced polarization; used to directly detect scattered primary sulfide mineralization. Most metal sulfides produce IP effects, e.g., chalcopyrite, bornite, chalcocite, pyrite, pyrrhotite
life of mine (LOM)Number of years that the operation is planning to mine and treat ore, and is taken from the current mine plan based on the current evaluation of ore reserves.
measured mineral resourceA measured mineral resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of conclusive geological evidence and sampling. The term conclusive geological evidence means evidence that is sufficient to test and confirm geological and grade or quality continuity. The level of geological certainty associated with a measured mineral resource is sufficient to allow a qualified person to apply modifying factors, as defined in this section, in sufficient detail to support detailed mine planning and final evaluation of the economic viability of the deposit.
mergerA voluntary combination of two or more companies whereby both stocks are merged into one.
Merrill-Crowe circuitA process which recovers precious metals from solution by first clarifying the solution, then removing the air contained in the clarified solution, and then precipitating the gold and silver from the solution by injecting zinc dust into the solution. The valuable sludge is collected in a filter press for drying and further treatment
millIncludes any ore mill, sampling works, concentration, and any crushing, grinding, or screening plant used at, and in connection with, an excavation or mine.
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TermDefinition
mineral reserve
A mineral reserve is an estimate of tonnage and grade or quality of indicated and measured mineral resources that, in the opinion of the qualified person, can be the basis of an economically viable project. More specifically, it is the economically mineable part of a measured or indicated mineral resource, which includes diluting materials and allowances for losses that may occur when the material is mined or extracted.
The determination that part of a measured or indicated mineral resource is economically mineable must be based on a preliminary feasibility (pre-feasibility) or feasibility study, as defined by this section, conducted by a qualified person applying the modifying factors to indicated or measured mineral resources. Such study must demonstrate that, at the time of reporting, extraction of the mineral reserve is economically viable under reasonable investment and market assumptions. The study must establish a life of mine plan that is technically achievable and economically viable, which will be the basis of determining the mineral reserve.
The term economically viable means that the qualified person has determined, using a discounted cash flow analysis, or has otherwise analytically determined, that extraction of the mineral reserve is economically viable under reasonable investment and market assumptions.
The term investment and market assumptions includes all assumptions made about the prices, exchange rates, interest and discount rates, sales volumes, and costs that are necessary to determine the economic viability of the mineral reserves. The qualified person must use a price for each commodity that provides a reasonable basis for establishing that the project is economically viable.
mineral resource
A mineral resource is a concentration or occurrence of material of economic interest in or on the Earth’s crust in such form, grade or quality, and quantity that there are reasonable prospects for economic extraction.
The term material of economic interest includes mineralization, including dumps and tailings, mineral brines, and other resources extracted on or within the earth’s crust. It does not include oil and gas resources, gases (e.g., helium and carbon dioxide), geothermal fields, and water.
When determining the existence of a mineral resource, a qualified person, as defined by this section, must be able to estimate or interpret the location, quantity, grade or quality continuity, and other geological characteristics of the mineral resource from specific geological evidence and knowledge, including sampling; and conclude that there are reasonable prospects for economic extraction of the mineral resource based on an initial assessment, as defined in this section, that he or she conducts by qualitatively applying relevant technical and economic factors likely to influence the prospect of economic extraction.
net present value (NPV)The present value of the difference between the future cash flows associated with a project and the investment required for acquiring the project. Aggregate of future net cash flows discounted back to a common base date, usually the present. NPV is an indicator of how much value an investment or project adds to a company.
net smelter return (NSR)A defined percentage of the gross revenue from a resource extraction operation, less a proportionate share of transportation, insurance, and processing costs.
open pitA mine that is entirely on the surface. Also referred to as open-cut or open-cast mine.
orogenyA process in which a section of the earth's crust is folded and deformed by lateral compression to form a mountain range
ounce (oz) (troy)Used in imperial statistics. A kilogram is equal to 32.1507 ounces. A troy ounce is equal to 31.1035 grams.
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Mexico
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TermDefinition
overburdenMaterial of any nature, consolidated or unconsolidated, that overlies a deposit of ore that is to be mined.
pebble crushingA crushing process on screened larger particles that exit through the grates of a SAG mill. Such particles (typically approx. 50 mm diameter) are not efficiently broken in the SAG mill and are therefore removed and broken, typically using a cone crusher. The crushed pebbles are then fed to a grinding mill for further breakage.
phyllic alterationMinerals include quartz-sericite-pyrite
plantA group of buildings, and especially to their contained equipment, in which a process or function is carried out; on a mine it will include warehouses, hoisting equipment, compressors, repair shops, offices, mill or concentrator.
potassic alterationA relatively high temperature type of alteration which results from potassium enrichment. Characterized by biotite, K-feldspar, adularia.
preg-robbingA characteristic of certain ores, typically that contain carbonaceous species, where dissolved gold is re-adsorbed by these species, leading to an overall reduction in gold recovery. Such ores require more complex treatment circuits to maximize gold recovery.
preliminary feasibility study, pre-feasibility study
A preliminary feasibility study (prefeasibility study) is a comprehensive study of a range of options for the technical and economic viability of a mineral project that has advanced to a stage where a qualified person has determined (in the case of underground mining) a preferred mining method, or (in the case of surface mining) a pit configuration, and in all cases has determined an effective method of mineral processing and an effective plan to sell the product.
A pre-feasibility study includes a financial analysis based on reasonable assumptions, based on appropriate testing, about the modifying factors and the evaluation of any other relevant factors that are sufficient for a qualified person to determine if all or part of the indicated and measured mineral resources may be converted to mineral reserves at the time of reporting. The financial analysis must have the level of detail necessary to demonstrate, at the time of reporting, that extraction is economically viable
probable mineral reserveA probable mineral reserve is the economically mineable part of an indicated and, in some cases, a measured mineral resource. For a probable mineral reserve, the qualified person’s confidence in the results obtained from the application of the modifying factors and in the estimates of tonnage and grade or quality is lower than what is sufficient for a classification as a proven mineral reserve, but is still sufficient to demonstrate that, at the time of reporting, extraction of the mineral reserve is economically viable under reasonable investment and market assumptions. The lower level of confidence is due to higher geologic uncertainty when the qualified person converts an indicated mineral resource to a probable reserve or higher risk in the results of the application of modifying factors at the time when the qualified person converts a measured mineral resource to a probable mineral reserve. A qualified person must classify a measured mineral resource as a probable mineral reserve when his or her confidence in the results obtained from the application of the modifying factors to the measured mineral resource is lower than what is sufficient for a proven mineral reserve.
propyliticCharacteristic greenish color. Minerals include chlorite, actinolite and epidote. Typically contains the assemblage quartz–chlorite–carbonate
proven mineral reserveA proven mineral reserve is the economically mineable part of a measured mineral resource. For a proven mineral reserve, the qualified person has a high degree of confidence in the results obtained from the application of the modifying factors and in the estimates of tonnage and grade or quality. A proven mineral reserve can only result from conversion of a measured mineral resource.
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Mexico
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TermDefinition
qualified person
A qualified person is an individual who is a mineral industry professional with at least five years of relevant experience in the type of mineralization and type of deposit under consideration and in the specific type of activity that person is undertaking on behalf of the registrant; and an eligible member or licensee in good standing of a recognized professional organization at the time the technical report is prepared.
For an organization to be a recognized professional organization, it must:
(A)Be either:
(1)An organization recognized within the mining industry as a reputable professional association, or
(2)A board authorized by U.S. federal, state or foreign statute to regulate professionals in the mining, geoscience or related field;
(B)Admit eligible members primarily on the basis of their academic qualifications and experience;
(C)Establish and require compliance with professional standards of competence and ethics;
(D)Require or encourage continuing professional development;
(E)Have and apply disciplinary powers, including the power to suspend or expel a member regardless of where the member practices or resides; and;
(F)Provide a public list of members in good standing.
reclamationThe restoration of a site after mining or exploration activity is completed.
refiningA high temperature process in which impure metal is reacted with flux to reduce the impurities. The metal is collected in a molten layer and the impurities in a slag layer. Refining results in the production of a marketable material.
resistivityObservation of electric fields caused by current introduced into the ground as a means of studying earth resistivity in geophysical exploration. Resistivity is the property of a material that resists the flow of electrical current
rock quality designation (RQD)A measure of the competency of a rock, determined by the number of fractures in a given length of drill core. For example, a friable ore will have many fractures and a low RQD.
royaltyAn amount of money paid at regular intervals by the lessee or operator of an exploration or mining property to the owner of the ground. Generally based on a specific amount per tonne or a percentage of the total production or profits. Also, the fee paid for the right to use a patented process.
run-of-mine (ROM)Rehandle where the raw mine ore material is fed into the processing plant’s system, usually the crusher. This is where material that is not direct feed from the mine is stockpiled for later feeding. Run-of-mine relates to the rehandle being for any mine material, regardless of source, before entry into the processing plant’s system.
semi-autogenous grinding (SAG)A method of grinding rock into fine powder whereby the grinding media consists of larger chunks of rocks and steel balls.
specific gravityThe weight of a substance compared with the weight of an equal volume of pure water at 4°C.
tailingsMaterial rejected from a mill after the recoverable valuable minerals have been extracted.
triaxial compressive strength
A test for the compressive strength in all directions of a rock or soil sample
uniaxial compressive strength
A measure of the strength of a rock, which can be determined through laboratory testing, and used both for predicting ground stability underground, and the relative difficulty of crushing.
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Mexico
Technical Report Summary
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25.0    RELIANCE ON INFORMATION PROVIDED BY THE REGISTRANT
25.1    Introduction
The QP fully relied on the registrant for the information used in the areas noted in the following sub-sections. The QP considers it reasonable to rely on the registrant for the information identified in those sub-sections, for the following reasons:
The registrant has been owner and operator of the mining operations more than 10 years;
The registrant has employed industry professionals with expertise in the areas listed in the following sub-sections;
The registrant has a formal system of oversight and governance over these activities, including a layered responsibility for review and approval;
The registrant has considerable experience in each of these areas.
25.2    Macroeconomic Trends
Information relating to inflation, interest rates, discount rates, exchange rates, and taxes was obtained from the registrant.
This information is used in the economic analysis in Chapter 19. It supports the assessment of reasonable prospects for economic extraction of the mineral resource estimates in Chapter 11, and inputs to the determination of economic viability of the mineral reserve estimates in Chapter 12.
25.3    Markets
Information relating to market studies/markets for product, market entry strategies, marketing and sales contracts, product valuation, product specifications, refining and treatment charges, transportation costs, agency relationships, material contracts (e.g., mining, concentrating, smelting, refining, transportation, handling, hedging arrangements, and forward sales contracts), and contract status (in place, renewals), was obtained from the registrant.
This information is used in the economic analysis in Chapter 19. It supports the assessment of reasonable prospects for economic extraction of the mineral resource estimates in Chapter 11, and inputs to the determination of economic viability of the mineral reserve estimates in Chapter 12.
25.4    Legal Matters
Information relating to the corporate ownership interest, the mineral tenure (concessions, payments to retain property rights, obligations to meet expenditure/reporting of work conducted), surface rights, water rights (water take allowances), royalties, encumbrances,
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easements and rights-of-way, violations and fines, permitting requirements, and the ability to maintain and renew permits was obtained from the registrant.
This information is used in support of the property description and ownership information in Chapter 3, the permitting and mine closure descriptions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
25.5    Environmental Matters
Information relating to baseline and supporting studies for environmental permitting, environmental permitting and monitoring requirements, ability to maintain and renew permits, emissions controls, closure planning, closure and reclamation bonding and bonding requirements, sustainability accommodations, and monitoring for and compliance with requirements relating to protected areas and protected species was obtained from the registrant.
This information is used when discussing property ownership information in Chapter 3, the permitting and closure discussions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
25.6    Stakeholder Accommodations
Information relating to social and stakeholder baseline and supporting studies, hiring and training policies for workforce from local communities, partnerships with stakeholders (including national, regional, and state mining associations; trade organizations; fishing organizations; state and local chambers of commerce; economic development organizations; non-government organizations; and, state and federal governments), and the community relations plan was obtained from the registrant.
This information is used in the social and community discussions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
25.7    Governmental Factors
Information relating to taxation and royalty considerations at the Project level, monitoring requirements and monitoring frequency, bonding requirements, and violations and fines was obtained from the registrant.
This information is used in the discussion on royalties and property encumbrances in Chapter 3, the monitoring, permitting and closure discussions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
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Boddington Operations
Western Australia
Technical Report Summary
Report current as of:
December 31, 2021
Qualified Person:
Mr. Donald Doe, RM SME.


Boddington Operations
Western Australia
Technical Report Summary
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NOTE REGARDING FORWARD-LOOKING INFORMATION
This Technical Report Summary contains forward-looking statements within the meaning of the U.S. Securities Act of 1933 and the U.S. Securities Exchange Act of 1934 (and the equivalent under Canadian securities laws), that are intended to be covered by the safe harbor created by such sections. Such forward-looking statements include, without limitation, statements regarding Newmont’s expectation for its mines and any related development or expansions, including estimated cash flows, production, revenue, EBITDA, costs, taxes, capital, rates of return, mine plans, material mined and processed, recoveries and grade, future mineralization, future adjustments and sensitivities and other statements that are not historical facts.
Forward-looking statements address activities, events, or developments that Newmont expects or anticipates will or may occur in the future and are based on current expectations and assumptions. Although Newmont’s management believes that its expectations are based on reasonable assumptions, it can give no assurance that these expectations will prove correct. Such assumptions, include, but are not limited to: (i) there being no significant change to current geotechnical, metallurgical, hydrological and other physical conditions; (ii) permitting, development, operations and expansion of operations and projects being consistent with current expectations and mine plans, including, without limitation, receipt of export approvals; (iii) political developments in any jurisdiction in which Newmont operates being consistent with its current expectations; (iv) certain exchange rate assumptions being approximately consistent with current levels; (v) certain price assumptions for gold, copper, silver, zinc, lead and oil; (vi) prices for key supplies being approximately consistent with current levels; and (vii) other planning assumptions.
Important factors that could cause actual results to differ materially from those in the forward-looking statements include, among others, risks that estimates of mineral reserves and mineral resources are uncertain and the volume and grade of ore actually recovered may vary from our estimates, risks relating to fluctuations in metal prices; risks due to the inherently hazardous nature of mining-related activities; risks related to the jurisdictions in which we operate, uncertainties due to health and safety considerations, including COVID-19, uncertainties related to environmental considerations, including, without limitation, climate change, uncertainties relating to obtaining approvals and permits, including renewals, from governmental regulatory authorities; and uncertainties related to changes in law; as well as those factors discussed in Newmont’s filings with the U.S. Securities and Exchange Commission, including Newmont’s latest Annual Report on Form 10-K for the period ended December 31, 2021, which is available on newmont.com.
Newmont does not undertake any obligation to release publicly revisions to any “forward-looking statement,” including, without limitation, outlook, to reflect events or circumstances after the date of this document, or to reflect the occurrence of unanticipated events, except as may be required under applicable securities laws. Investors should not assume that any lack of update to a previously issued “forward-looking statement” constitutes a reaffirmation of that statement. Continued reliance on “forward-looking statements” is at investors’ own risk.
Date: February, 2022
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Boddington Operations
Western Australia
Technical Report Summary
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CONTENTS
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Boddington Operations
Western Australia
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Western Australia
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TABLES
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Western Australia
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FIGURES
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Boddington Operations
Western Australia
Technical Report Summary
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1.0    EXECUTIVE SUMMARY
1.1    Introduction
This technical report summary (the Report) was prepared for Newmont Corporation (Newmont) on the Boddington Operations (Boddington Operations or the Project) located in southern Western Australia (WA).
1.2    Terms of Reference
The Report was prepared to be attached as an exhibit to support mineral property disclosure, including mineral resource and mineral reserve estimates, for the Boddington Operations in Newmont’s Form 10-K for the year ending December 31, 2021.
Mineral resources and mineral reserves are reported for the North and South pits (also referred to as Wandoo North and Wandoo South). Mineral reserves are also estimated for material in stockpiles.
Gold operations were conducted in two phases. The initial oxide operations, a combination of open pit and underground mining, ran from 1987–2001. The current operations commenced in 2009 from open pit sources.
Unless otherwise indicated, all financial values are reported in Australian dollars (AU$). Unless otherwise indicated, the metric system is used in this Report. Mineral resources and mineral reserves are reported using the definitions in Regulation S–K 1300 (SK1300), under Item 1300. The Report uses US English. The Report contains forward-looking information; refer to the note regarding forward-looking information at the front of the Report.
1.3    Property Setting
The Boddington Operations are located about 130 km southeast of the city of Perth and 17 km northwest of the township of Boddington, and are accessed via a sealed road from the township. Perth is the main source of supplies, and has a large, specialized infrastructure for mining support. Workers commute from Boddington and surrounding settlements to the mine site.
The climate is Mediterranean, with hot, dry summers and cool, wet winters. Mining operations are conducted year-round.
The mine is located on the Darling Plateau in an area of deeply weathered, undulating landscape that ranges from 200–500 meters Relative Level (mRL). Local relief varies by about 100 m, with shallow valley floors adjacent to broadly convex hills.
The mining leases are located largely on private forested land typical of the eastern Jarrah (a type of eucalyptus) forest.
1.4    Ownership
The majority of the Boddington Operations area is located within the original boundaries of a single large tenement (M258SA) granted under a State Agreement known as the Worsley State
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Western Australia
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Agreement. M258SA is held by the Worsley Joint Venture (Worsley JV) and permits the mining of bauxite only.
In the early 1980s, the Worsley JV discovered gold mineralization at Boddington. The Worsley State Agreement was amended to enable the granting of all mineral leases under the Mining Act of Western Australia 1978 within the boundaries of M258SA. The Worsley JV established a new joint venture to exploit the gold mineralization, the Boddington Gold Mine Joint Venture (BGMJV). The relationship between the bauxite/alumina operations and the gold operations was regulated under a cross-operation agreement which, in a restated form, continues as of the Report date. The paramount principle regulating the relationship between the Worsley JV and the BGMJV was that bauxite and bauxite operations were to have priority over all other minerals within an area (the Common Area) that was defined within the boundaries of M258SA. This interpretation remains current as of the Report date.
Ownership of the BGMJV changed over time so that the participants in the Worsley JV were no longer the same as the BGMJV participants. In order to accommodate the transfer of ownership to incoming BGMJV participants while maintaining bauxite rights, a series of transactions were entered into that resulted in the present structure whereby the BGMJV participants sublease the mining leases on which the gold mineralization is located.
Since 2009, Newmont has had 100% ownership of the BGMJV. The current parties to the BGMJV are Newmont Boddington Pty Ltd (66⅔%) and Saddleback Investments Pty Ltd (Saddleback; (33⅓%). Both companies are indirectly-wholly owned Newmont subsidiaries.
1.5    Mineral Tenure, Surface Rights, Water Rights, Royalties and Agreements
Newmont has an interest in a total of 89 tenements in the Boddington area The total granted area is approximately 21,249 ha and the under-application area is approximately 60,767 ha.
The actual mining area is covered by the following 13 WA Mining Act leases: M70/21–26, M70/564, M70/799, M70/1031, G70/215 and G70/218–219, and M264SA. Mining leases M70/21–26 and M70/799 are the key tenements under which gold mining activity is concentrated.
A total of 26 of the mining tenements are at an application stage. Under the Mining Act of Western Australia 1978, Mining Leases are granted for 21 years and are renewable. Five mining leases (M70/21–25) were renewed in March 2007 for a 21-year term.
Newmont has an automatic right to be granted new subleases when the tenements are renewed. The Worsley JV may renew the mining leases. Through direct lease holding and sub-lease arrangements with the Worsley JV, Newmont holds the rights to minerals other than bauxite in proportion to the Newmont ownership percentages.
The Boddington Operations have freehold ownership of all the eastern and central areas of operations. Within this freehold land are all the existing tailings storage facility (TSF) areas, the plant site, almost all of the area of the main open pit from the former oxide operation, and all but one of the smaller satellite open pits from the 1987–2001 operation. The western portion of the operational area is outside the freehold land is Crown land covered by native forest. Mining operations can be conducted in this area but with certain restrictions imposed by the State Government through the 1978 Mining Act that are applicable to forested Crown lands.
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The Boddington Operations area was previously subject to a land claim registered under the Native Title Act and referred to as the Gnaala Karla Booja Claim. This claim has now been settled (The South West Native Title Settlement) and the settlement between the Western Australian Government and the claimant group became effective in January 2021.
Production royalties on copper, gold, and silver are payable to the WA government and are included in the net smelter return (NSR) cut-off determination.
1.6    Geology and Mineralization
The deposit style is still somewhat controversial. Features consistent with porphyry-style mineralization, classic orogenic shear zones, and intrusion-related gold–copper–bismuth mineralization, are all recognized, giving rise to a variety of genetic interpretations.
The Boddington deposit is hosted within the Wells Formation in the Saddleback Greenstone Belt, which lies in the southeastern corner of the Archaean Yilgarn Craton. The deposit lies within a 6 km strike length of the Wells Formation. For descriptive purposes the deposit is subdivided at approximately 12200 N into two main centers of bedrock mineralization, referred to as Wandoo North (North Pit) and Wandoo South (South Pit). Most of the primary mineralization is hosted within intermediate to felsic intrusive, volcanic, and volcano–sedimentary rocks. The deepest mineralization intercept is at approximately 1,219 m. The laterite zone consists of 1–10 m of topsoil and loose gravel, underlain by 1–2 m of ferruginous duricrust, and a basal zone of 1–10 m of gibbsitic bauxite with goethite, hematite and minor kaolinite. The saprolite zone, 25–80 m thick, typically consists of mottled and ferruginous kaolinitic clays, with preserved rock textures.
Two mineralization stages were recognized. The earliest phase consists of widespread silica–biotite alteration and complex quartz + albite + molybdenite ± muscovite ± clinozoisite ± chalcopyrite veins, all of which are variably deformed by ductile shear zones. Gold in the laterite zones occurs in association with iron and aluminum hydroxides. Gold in the saprolite is hosted in primary quartz veins, in clays immediately adjacent to mineralized quartz veins, and in secondary, shallow-dipping, goethitic horizons. Saprock mineralization reflects the mineralization distribution in the underlying bedrock. Bedrock gold mineralization is hosted in veins, lenses and stockworks. Chalcopyrite and pyrrhotite are the dominant sulfides, with lesser pyrite, sphalerite, cubanite, cobaltite, arsenopyrite, pentlandite, covellite, bismuthinite, digenite, marcasite and galena.
1.7    History and Exploration
Exploration from 1975–2002, prior to Newmont’s Project interest, was conducted by the Geological Survey of Western Australia, Reynolds Australia Mines, the BGMJV, and Alcoa of Australia Limited. Work conducted included geochemical prospecting and sampling, geological mapping, airborne and ground geophysical surveys, drill testing, mineral resource and ore (mineral) reserve estimates, mining studies, environmental studies, applications for environmental approvals, open pit and underground mining.
Newmont became a party to the BGMJV in 2002, and work conducted by Newmont and the BGMJV since that date included geological and structural mapping, a deep sensing geochemical program, airborne and ground geophysical surveys, drill testing, mineral resource
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Western Australia
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and ore (mineral) reserve estimates, mining studies, environmental studies, permit applications, and open pit mining.
Newmont is currently using district-scale datasets as exploration tools to identify additional mineralization within the Saddleback Greenstone Belt. The datasets are assisting with recognizing new belt-scale lineaments and felsic intrusions, similar to the monzogranite possibly associated with gold mineralization at Boddington, which could host additional Boddington-style mineralization. A number of possible cutbacks were identified adjacent to the current mine plan that may represent upside potential for the operations if these areas can be included in the life-of-mine (LOM) plan.
1.8    Drilling and Sampling
1.8.1    Drilling
Approximately 159,490 drill holes were completed by December 31, 2021, for about 3.80 Mm of drilling. Drill methods included core, reverse circulation (RC), aircore (AC), rotary air blast (RAB) and vacuum. Drilling that supports the 2021 mineral resource and mineral reserve estimates consists of core and RC drill holes.
Blast holes were drilled for drill-and-blast purposes on a 5.2 x 5.2 m pattern for ore and 5.7 x 5.7 m pattern for waste.
Standardized logging procedures and software are used to record geological and geotechnical information. Core recoveries are typically 100%. Core and RC collars are recorded using differential global positioning system (DGPS) instruments. Downhole survey instruments used include single shot Eastman, single or multishot Reflex and north-seeking gyro tools. Downhole surveys were taken on spacings ranging from 30–50 m.
1.8.2    Hydrogeology
Groundwater monitoring was completed via a network of monitoring bores and grouted multiple vibrating wire piezometer pore pressure monitoring bores, covering all areas of the active mine site (including waste rock storage facilities (WRSFs) and TSF areas) and the regional areas peripheral to the mine operations.
Complimenting the groundwater monitoring programs are extensive surface water sampling programs focused on regional, mining (WRSFs and drainage), TSFs, and processing areas. The surface water samples are sent to the same laboratory as the groundwater samples with monitoring of water quality variables specific to the risk associated with the sample location. As required, corporate subject matter experts and/or third party consultants undertake specialized hydrological/geotechnical evaluations.
To the Report date, the hydrogeological data collection programs have provided data suitable for use in the mining operations, and have supported the assumptions used in the active pits.
1.8.3    Geotechnical
Geotechnical systems are implemented and maintained to monitor slope and pit wall deformation. Geotechnical data are collected where considered necessary to provide additional
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Western Australia
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information and to verify ground conditions in the vicinity of the open pits and WRSFs. Core drilling methods are used to collect soil and or rock core. Materials encountered are logged and sampled are selected and recovered for laboratory testing where required.
In addition to information gathered during core drilling, geological structures are mapped and documented continuously as mining progresses in the open pits. This is aided through use of geo-referenced photogrammetry and high-definition point cloud scanning that is used to create digital references of structures modelled.
The geological hard rock setting at the Boddington Operations is well understood and displays consistency in the various open pits located on site. Additional testing continues to confirm the consistency of material strengths and parameters.
1.8.4    Sampling and Assay
RC and core samples were typically collected on 1–2 m intervals. A single sample is taken from blastholes.
Bulk density values were collected primarily using the water immersion method. Approximately 10% of the samples were sent to an independent offsite laboratory for check measurements.
Independent laboratories used for sample preparation and analysis included Classic Comlabs; Genalysis, now part of the Intertek Group (Intertek Genalysis); Amdel, Kalassay, Analabs, UltraTrace Geoanalytical Laboratories (Ultratrace) (all now part of the Bureau Veritas Group), and Australian Assay Laboratories (AAL) in Perth, AAL in Boddington. Since 2006, the primary and check laboratories, Intertek Genalysis and Bureau Veritas, have held ISO/IEC 17025 accreditations for selected analytical techniques. The Boddington mine laboratory, operated by AAL and Amdel, was used from 1985–2001.
Various sample preparation crushing and pulverizing protocols were used since the 1980s, depending on the laboratory. Recent protocols saw Intertek Genalysis crushing to a nominal P90 passing 3 mm and pulverizing to a nominal 95% minus 100 µm; Ultratrace crushing to 2.8 mm and pulverizing to a nominal 95% passing 90 µm; and Bureau Veritas Kalassay crushing to a nominal 95% passing 3 mm and pulverizing to a nominal 95% passing 90 µm.
Analytical methods depended on the sample type and laboratory. For RC and core samples prior to 2006, analysis of gold was by fire assay with either AAS or inductively-coupled plasma atomic emission spectroscopy (ICP-AES). Copper analysis was by either single acid digestion or three-acid digestion followed by AAS. Post 2006, gold was assayed using fire assay with an AAS finish, and a multi-element suite was determined using four-acid digest with either an ICP optical emission spectroscopy (OES) or ICP mass spectrometry (MS) finish. Multi-element determination was not routinely performed prior to 2006, but rather performed on selected drill holes as part of detailed geological investigations.
1.8.5    Quality Assurance and Quality Control
A quality assurance and quality control (QA/QC) program was in place from 1989 onward. The type and nature of samples used in the program varied over time. Since 2006, standards and blanks were submitted randomly in the sample stream prior to submission to the assay laboratory. Standards were both commercially-prepared and sourced from Boddington mineralization.
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The grade control QA/QC process has been in place since 2008.
Results are regularly monitored. The QA/QC programs adequately address issues of precision, accuracy and contamination.
1.9    Data Verification
Newmont personnel regularly visit the laboratories that process Newmont samples to inspect sample preparation and analytical procedures.
The database that supports mineral resource and mineral reserve estimates is checked using electronic data scripts and triggers. Newmont also conducted a number of internal data verification programs since obtaining its Project interest. Newmont conducts internal audits, termed Reserve and Resource Review (3R) audits, of all its operations. The most recent Boddington Operations 3R audits were conducted in 2012, 2014, and 2019. The 2019 3R audit found that the Boddington Operations were generally adhering to Newmont’s internal standards and guidelines with respect to the estimation of mineral resources and mineral reserves.
Data verification was performed by external consultants or BGMJV partners in support of mine development and operations. Many of the audits were conducted prior to the commencement of the current mining operation in 2009 to ensure that the best possible database, geological interpretations, block models, and resource estimates were available to support investment decisions.
The QP receives and reviews monthly reconciliation reports from the mine site. These reports include the industry standard reconciliation factors for tonnage, grade and metal. Through the review of these reconciliation factors the QP is able to ascertain the quality and accuracy of the data and its suitability for use in the assumptions underlying the mineral resource and mineral reserve estimates.
1.10    Metallurgical Testwork
During feasibility-stage studies from 1997–2003, several programs of metallurgical testwork were completed on the Boddington deposit. These supported the initial mining phase. A second phase of testwork was conducted in 2008, and a third phase in 2017. The post-feasibility testwork was primarily conducted at AMMTEC in Perth, now ALS Metallurgy.
Samples selected for metallurgical testing during feasibility and development studies were representative of the various styles of mineralization within the different deposits. Samples were selected from a range of locations within the deposit zones. Sufficient samples were taken and tests were performed using sufficient sample mass for the respective tests undertaken.
Work completed included mineralogy, comminution and high-pressure grind–roll (HPGR) testwork, Bond ball mill, Bond rod mill work index, and abrasion index tests, flotation and leach testwork locked cycle flotation test, scavenger tail leach, cleaner scavenger tail leach); flotation tailings cyanidation testwork; determination of thickening and slurry pumping characteristics; rheology; tailings characterization; and oxygen addition.
Recovery models were developed using known ore parameters to predict plant recovery. In these models, the throughput rate is fixed and the grind size is allowed to vary with ore hardness, resulting in recovery differences in each of the eight geometallurgical domains. The
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gold and copper recovery models for the mill are based on head grade. The forecast LOM gold recovery is 85% and the forecast LOM copper recovery is 82%. These forecasts do not include the application of recovery degradation to long-term stockpiles of medium-grade ore. Gold recovery is discounted by 3% and copper recovery is discounted by 6% to account for recovery degradation in the business plan. These degradation assumptions were verified by an ongoing stockpile oxidation testwork program.
Since commissioning in 2009, the operation has actively managed the arsenic level in plant feed and, through concentrate blending techniques, controlled the level in copper concentrate shipments to below the penalty rate trigger, hence no penalties were incurred to the Report date. Bismuth is closely associated with gold in the Wandoo ores; however, so it has resulted in penalty levels being exceeded, particularly in the first two years of operation (2009–2011). Most of the high bismuth ores have been processed, resulting in very low to no penalty charges being incurred since 2012.
Alumina remains the largest penalty element present in the copper concentrate, with shipments regularly exposed to a penalty adjustment. However, at 4–5% Al2O3 the levels are not far off the trigger point of 3% in most contracts and a modification to the process was made during Q1 2019 with the introduction of the cleaner–scalper column which reduces the non-sulfide gangue (i.e., Al2O3) in the concentrate and improves the grade of the concentrate as a result.
1.11    Mineral Resource Estimation
1.11.1    Estimation Methodology
The close-out date for the sample database used in mineral resource estimation was August 13 2021, with the resource model dated at October 1, 2021. Exploratory data analysis included statistical reviews and contact analysis to determine estimation domain boundaries.
Six models were constructed: geology, gold, copper, in-situ bulk density (density), deleterious/secondary elements (arsenic, bismuth, molybdenum and sulfur), geotechnical, structural and acid rock drainage.
Density values were interpolated using ordinary kriging (OK) to provide block estimates when sufficient data were available. Where insufficient data were available, an assigned density was used.
All assay data were composited to 12 m lengths downhole. High-grade and outlier grade cuts were applied to each of the gold, copper, arsenic, bismuth, molybdenum and sulfur domains. Spatial variability of the grades for gold, copper, arsenic, bismuth, molybdenum and sulfur was modeled through directional variography of capped 12 m composites.
Ordinary kriged estimates for gold, copper, sulfur, arsenic, molybdenum and bismuth and density were conducted in a separate block model with a parent block size of 10 x 20 x 12 m with sub-blocking to 5 x 5 x 6 m. The final block size used in the resource block model was a regularized size of 20 x 20 x 12 m to match the current selective mining unit. Estimation allowed for a minimum of six samples, a maximum of eight, with a maximum of two samples used per drill hole, and a minimum of three and maximum of eight drill holes per block.
Grade dilution was applied due to unavoidable mining of small dolerite bodies. Modifying factors were applied to sulfur and copper, based on historical plant reconciliation data.
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Validation used Newmont-standard methods, including a combination of visual checks, swath plots, global statistical bias checks against input data, alternate estimation methods and reconciliation with historical mine/plant performance. The validation procedures indicated that the geology and resource models used are acceptable to support the mineral resource estimation.
Mineral resource classification was undertaken based primarily on drill spacing and number of drill holes used in the estimate. Mineral resources were classified as measured, indicated, and inferred. A quantitative assessment of geological risk was undertaken using Newmont-standard methods and applied on a block by block basis. Primary risks to resource quality include quantity and spacings of drill data, geological knowledge, geological interpretation and grade estimates. All identified risks are within acceptable tolerances with associated management plans.
Mineral resources considered amenable to open pit mining methods are reported within a mine design. Commodity prices used in resource estimation are based on long-term analyst and bank forecasts, supplemented with research by Newmont’s internal specialists. The estimated timeframe used for the price forecasts is the 14-year LOM that supports the mineral reserve estimates. The cut-off grade is defined by a revenue cut-off to account for both copper and gold revenue with two product streams, gold doré and copper concentrate. The block revenue is calculated on a net smelter return (NSR) basis, which is the dollar return expected from the sale of the concentrate produced from a tonne of in situ material. The mine plan is based on a 42 Mt/a mill throughput. The schedule was developed at an NSR cut-off of AU$17.34/t, incorporating the processing cost, metallurgical recovery, incremental ore mining costs, process sustaining capital and tailings dam related rehabilitation costs. The net revenue calculation assumes a gold price of US$1,400/oz or AU$1,867/oz, and a copper price of US$3.25/lb or AU$4.33/lb. The assumed exchange rate for mineral reserves was 0.75 US$:AU$. Mineral resources are reported above an NSR cut-off of AU$17.34/t.
1.11.2    Mineral Resource Statement
Mineral resources are reported using the mineral resource definitions set out in SK1300 and are current as at December 31, 2021. The reference point for the estimate is in situ. Mineral resources are reported exclusive of those mineral resources converted to mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
The mineral resource estimates for the Boddington Operations are summarized in Table 1-1 (measured and indicated; gold) and Table 1-2 (inferred; gold) and Table 1-3 (measured and indicated; copper) and Table 1-4 (inferred; copper).
1.11.3    Factors That May Affect the Mineral Resource Estimate
Factors which may affect the mineral resource estimates include: metal price assumptions; changes to the assumptions used to generate the NSR cut-off; changes to design parameter assumptions that pertain to the conceptual pit design that constrain the mineral resources, including changes to geotechnical, mining and metallurgical recovery assumptions, and changes to royalties levied and any other relevant parameters that are included in and impact the NSR cut-off determination; changes in interpretations of mineralization geometry and continuity of mineralization zones; changes to the dilution skin percentages used for large
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dolerite dykes; and assumptions as to the continued ability to access the site, retain mineral and surface rights titles, maintain the operation within environmental and other regulatory permits, and retain the social license to operate.
1.12    Mineral Reserve Estimation
1.12.1    Estimation Methodology
Measured and indicated mineral resources were converted to mineral reserves. Mineral reserves were estimated assuming open pit mining, and the use of conventional Owner-operated equipment. All Inferred blocks are classified as waste in the cashflow analysis that supports mineral reserve estimation.
Table 1-1:    Measured and Indicated Mineral Resource Statement (Gold)
Area 
Measured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x
1,000 t)
Grade
(g/t Au)
Cont. Gold
(x
1,000 oz)
Tonnage
(x
1,000 t)
Grade
(g/t Au)
Cont. Gold
(x
1,000 oz)
Tonnage
(x
1,000 t)
Grade
(g/t Au)
Cont. Gold
(x
1,000 oz)
Boddington96,2000.531,640180,5000.543,110276,7000.534,750
Table 1-2:    Inferred Mineral Resource Statement (Gold)
AreaInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Boddington3,3000.550
Table 1-3:    Measured and Indicated Mineral Resource Statement (Copper)
AreaMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x
1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x
1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x
1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Boddington96,2000.11220180,5000.11450276,7000.11670
Table 1-4:    Inferred Mineral Resource Statement (Copper)
AreaInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Boddington3,3000.110
Notes to accompany mineral resource tables:
1.Mineral resources are current as at December 31, 2021, and are reported using the definitions in SK1300 on a 100% basis. The Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.The reference point for the mineral resources is in situ.
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3.Mineral Resources are reported exclusive of mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
4.Mineral resources that are potentially amenable to open pit mining methods are constrained within a designed pit . Parameters used are summarized in Table 11-3.
5.Tonnages are metric tonnes rounded to the nearest 100,000. Gold grade is rounded to the nearest 0.01 gold grams per tonne. Copper grade is reported as a %. Gold ounces and copper pounds are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold ounces are reported as troy ounces, rounded to the nearest 10,000. Copper is reported as pounds.
6.Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”).
7.Totals may not sum due to rounding.
For mineral reserves, Newmont applies a time discount factor to the dollar value block model that is generated in the pit-limit analysis, to account for the fact that a pit will be mined over a period of years, and that the cost of waste stripping in the early years must bear the cost of the time value of money. Optimization work involved floating pit shells at a series of gold and copper prices. The pit shells with the highest NPV were selected for detailed engineering design work. A realistic schedule was developed in order to determine the optimal pit shell; schedule inputs include the minimum mining width, and vertical rate of advance, mining rate and mining sequence.
The mine plan is based on a 42 Mt/a mill throughput. The schedule was developed at an NSR cut-off of AU$17.06/t, incorporating the processing cost, metallurgical recovery, incremental ore mining costs, process sustaining capital and tailings dam related rehabilitation costs. The net revenue calculation assumes a gold price of US$1,200/oz or AU$1,600/oz, and a copper price of US$2.75/lb or AU$3.66/lb. The assumed exchange rate for mineral reserves was 0.75 US$:AU$. Mineral reserves are reported above an NSR cut-off of AU$17.06/t.
Pit designs are full crest and toe detailed designs with final ramps based on the selected optimum Whittle cones. Pit designs honor geotechnical guidelines with 15.2 m catch berms. Most of the ore will be directly fed to the process plant; however, some re-handle is required. Direct feeding to the crusher is constrained by where the ore is located in the open pit and the crusher availability. Some higher-grade ore is stockpiled and fed back to the crusher when required. Approximately 50% of feed is re-handle material from the stockpiles.
Block ore volumes are adjusted for waste proportions. Small dolerite volumes are added to the grade variables as dilution as they are narrower than the selective mining unit (SMU). Larger dolerite volumes are applied to the block as a waste portion and increased by a set amount which represents ore loss against the dolerite contact. Blocks containing >50% oxide material are classified as waste and have the grade set to zero.
Stockpile estimates were based on mine dispatch data; the grade comes from closely-spaced blasthole sampling and tonnage sourced from truck factors. The stockpile volumes were typically updated based on monthly surveys. The average grade of the stockpiles was adjusted based on the material balance to and from the stockpile.
Commodity prices used in mineral reserve estimation are based on long-term analyst and bank forecasts, supplemented with research by Newmont’s internal specialists. The estimated timeframe used for the price forecasts is the 14-year LOM.
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1.12.2    Mineral Reserve Statement
Mineral reserves were classified using the definitions set out in SK1300 and are current as at December 31, 2021. The reference point for the mineral reserve estimate is at the point of delivery to the process facilities.
The proven and probable mineral reserve estimates for the Boddington Operations are summarized in Table 1-5 (gold) and Table 1-6 (copper).
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Table 1-5:    Proven and Probable Mineral Reserve Statement (Gold)
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x
1,000 t)
Grade
(g/t Au)
Cont. Gold
(x
1,000 oz)
Tonnage
(x
1,000 t)
Grade
(g/t Au)
Cont. Gold
(x
1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x
1,000 oz)
Open pit237,4000.705,360239,1000.665,090476,5000.6810,450
Stockpile2,6000.686079,1000.431,09081,8000.441,140
Boddington Total240,1000.705,420318,2000.606,170558,3000.6511,590
Table 1-6:    Proven and Probable Mineral Reserve Statement (Copper)
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x
1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x
1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x
1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Open pit237,4000.10550239,1000.11590476,5000.111,140
Stockpile2,6000.091079,1000.0915081,8000.09160
Boddington Total240,1000.10550318,2000.11740558,3000.111,300
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Notes to Accompany Mineral Reserve Tables:
1.Mineral reserves are current as at December 31, 2021. Mineral reserves are reported using the definitions in SK1300 on a 100% basis. The Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.The reference point for the mineral reserve estimates is the point of delivery to the process plant.
3.Mineral reserves that will be mined using open pit mining methods are constrained within a designed pit. Parameters used are included in Table 12-1.
4.Tonnages are metric tonnes rounded to the nearest 100,000. Gold grade is rounded to the nearest 0.01 gold grams per tonne. Copper grade is %. Gold ounces and copper pounds are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold ounces are reported as troy ounces, rounded to the nearest 10,000. Copper is reported as pounds. Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”).
5.Totals may not sum due to rounding.
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1.12.3    Factors That May Affect the Mineral Reserve Estimate
Areas of uncertainty that may materially impact the mineral reserve estimates include: changes to long-term metal price and exchange rate assumptions; changes to metallurgical recovery assumptions; changes to the input assumptions used to derive the pit designs applicable to the open pit mining methods used to constrain the estimates; changes to the forecast dilution and mining recovery assumptions; changes to the cut-off values applied to the estimates; variations in geotechnical (including seismicity), hydrogeological and mining method assumptions; and changes to environmental, permitting and social license assumptions.
1.13    Mining Methods
The geotechnical model for the Boddington deposit was defined by geotechnical drilling and logging, laboratory test work, rock mass classification, structural analysis, and stability modeling.
The hydrological model was based on a three-dimensional flow model, historic pumping rates, and drill data. Overall pit slope angles varied between approximately 37–52º according to geology and location of pit infrastructure such as ramps and haul roads.
The pit dewatering system will continuously receive large volumes of groundwater and surface run-off over the LOM. The sum of active and passive dewatering has been relatively constant at approximately 140 L/sec; the long-term dewatering strategy assumes that this trend continues throughout the LOM. The water management strategy is to maximize the use of groundwater within the process plant and the loss of excess water by evaporation from the TSF. There is provision in place to capture excess surface water in water storage reservoirs.
The LOM plan envisages mining at an average rate of approximately 80 Mt/a for 14 years, peaking at 93 Mt/a in 2035, with a maximum rate of advance by pit stage of seven benches per annum and an average of five benches (60 m) per year. The mine plan assumes eight pit phases remain. The mine life will extend to 2034 with material mined from the open pit. Processing will cease in 2035 after treatment of stockpiled ore.
1.14    Recovery Methods
The process plant design was based on a combination of metallurgical testwork, previous study designs, and previous operating experience. The design is conventional to the gold industry and has no novel parameters.
The process consists of: primary crushing, closed circuit secondary and high-pressure grind roll tertiary crushing, ball milling; flotation to produce a copper–gold concentrate; and conventional leach/adsorption of the cleaner–scavenger tailings stream to produce doré.
Power supply to the operations is via the local grid system. Water supply is from a number of sources including local rivers, pit dewatering water, borefield water adjacent to the pits, rainfall run-off and recovered water from the process plant thickeners and TSF. Consumables used in the processing include grinding media, primary collector (thionocarbamate), secondary collector (xanthate), frother, lime, flocculant, cyanide, oxygen, caustic, sulfuric and hydrochloric acid, and peroxide.
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1.15    Infrastructure
The majority of the key infrastructure to support the Boddington Operations mining activities envisaged in the LOM is in place. A second TSF will be required for the LOM plan. Within Newmont’s ground holdings, there is sufficient area to allow construction of any additional infrastructure that may be required in the future.
The existing infrastructure, staff availability, existing power, water, and communications facilities, and the methods whereby goods are transported to the mine are all in place and well-established, and can support the estimation of mineral resources and mineral reserves.
Personnel commute from surrounding settlements or live in a purpose-built accommodation village.
A number of WRSFs are in use, segregated as oxide or rock facilities. Potentially acid-forming waste is encapsulated within the WRSFs as required.
Boddington operates two run-of-mine (ROM) stockpiles and two medium-grade stockpiles. The stockpiles are reclaimed using a preferential high-grade feed strategy, with the lower medium-grade stockpiles being re-handled to the mill towards the end of the LOM.
The F1/F3 residue disposal area (RDA) is the current active TSF for the Boddington Operations.
The current F1/F3 dam has approved capacity to 600 Mt, which will provide tailings storage to 2025, assuming remaining capacity of 163 Mt, and an approximate 42 Mt/a process rate. The approved facility has 11 perimeter embankments, of which all are in place.
Newmont plans to expand the facility to 750 Mt, which, assuming the same approximate 42 Mt/a process rate, will provide tailings capacity to 2029. The expansion to 750 Mt is not currently permitted.
Additional storage that will be required for the LOM beyond 2029 is being evaluated by Newmont. This is currently envisaged as a new RDA with a 250 Mt capacity. Newmont has established a pathway and a timeline for the RDA approval and construction such that storage capacity will be available when needed.
Water management infrastructure for mine operations includes pit dewatering and mine surface water drainage infrastructure.
Power is sourced from the Bluewater Power Station, a coal-fired power station located 4.5 km northeast of the town of Collie, which is located approximately 80 km from the mine. Power is transmitted through the State power grid from the power station to the mine site.
1.16    Markets and Contracts
Newmont has established contracts and buyers for copper concentrate products, and has an internal marketing group that monitors markets for its concentrate. Together with public documents and analyst forecasts, there is a reasonable basis to assume that for the LOM plan, the copper concentrate will be saleable at the assumed commodity pricing.
The terms contained within the concentrate sales contracts are typical and consistent with standard industry practice for high-gold, low-copper concentrates. The contracts include industry benchmark terms for metal payables, treatment charges and refining charges for
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concentrates produced. Depending on the specific contract, the terms for the sale of Boddington’s copper concentrate are either annually negotiated, benchmark-based treatment and refining charges, or a combination of annually-negotiated terms. Treatment charges assumed for estimation of mineral reserves are based on the forecasts published by third-party data providers such as Wood Mackenzie or CRU. The formula used for mineral reserves is sensitive to the underlying copper price and is consistent with long-term expectations for copper treatment and refining charges. Newmont’s doré is sold on the spot market, by marketing experts retained in-house by Newmont. The terms contained within the sales contracts are typical and consistent with standard industry practice and are similar to contracts for the supply of doré elsewhere in the world.
Newmont uses a combination of historical and current contract pricing, contract negotiations, knowledge of its key markets from a long operations production record, short-term versus long-term price forecasts prepared by Newmont’s internal marketing group, public documents, and analyst forecasts when considering long-term commodity price forecasts. Higher metal prices are used for the mineral resource estimates to ensure the mineral reserves are a sub-set of, and not constrained by, the mineral resources, in accordance with industry-accepted practice.
The largest in-place contracts other than for product sales cover items such as bulk commodities, operational and technical services, mining and process equipment, and administrative support services. Contracts are negotiated and renewed as needed. Contract terms are typical of similar contracts in Australia that Newmont is familiar with.
1.17    Environmental, Permitting and Social Considerations
1.17.1    Environmental Studies and Monitoring
Baseline and supporting environmental studies were completed to assess both pre-existing and ongoing site environmental conditions, as well as to support decision-making processes during operations start-up and restart. Characterization studies were completed for all environmental media including soil, water, waste, air, noise and closure.
Plans were developed and implemented to address aspects of operations such as waste and fugitive dust management, spill prevention and contingency planning, water management, and noise levels.
There are five species classified as Threatened Species/Matters of National Environmental Significance in the Project area, including three species of black cockatoo (Baudin’s, Carnaby’s and Forest Red-Tailed), and two species of marsupial, woylie and chuditch. All five species have site-specific management plans.
1.17.2    Closure and Reclamation Considerations
The most recent closure plan was submitted in 2019. The closure plan covers rehabilitation of the WRSFs, TSF, processing plant and other areas of disturbance.
In 2021, the annual 1% liability levy under the Mine Rehabilitation Fund that is charged to the site and remains in effect until all tenements were signed off as rehabilitated, amounted to approximately AU$1,403 M. Due to the bauxite State Agreements, there is one tenement for
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which the Mine Rehabilitation Fund does not apply, and a bond, to the value of AU$3.63 M, was lodged.
Newmont also calculates the closure costs for the Boddington Operations as part of internal closure and financial planning. The closure estimate, as at 2021, assuming operations to 2035, is calculated as approximately AU$0.5 B.
1.17.3    Permitting
All major permits and approvals are either in place or Newmont expects to obtain them in the normal course of business. Additional permitting will be required to support the tailings disposal required in the LOM plan. Where permits have specific terms, renewal applications are made of the relevant regulatory authority as required, prior to the end of the permit term.
Newmont monitors the regulatory regime in place at each of its operations and ensures that all permits are updated in line with any regulatory changes.
1.17.4    Social Considerations, Plans, Negotiations and Agreements
Newmont defines the host communities for the Boddington Operations as those within a 50 km radius of the operation. These include the local government areas of Boddington, Williams, and Wandering, and the community of Dwellingup. Newmont has well-established relationships, engagement forums, and a suite of integrated social impact and opportunity-aligned strategic investment partnerships.
The operations area is subject to the South West Native Title Settlement. he Preservation of Aboriginal Heritage Agreement ensures that Newmont meets and exceeds the minimum obligations prescribed in the State’s Aboriginal Heritage Act 1972.
1.18    Capital Cost Estimates
Capital cost estimates are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Capital costs are based on recent prices or operating data. Capital costs include funding for infrastructure, pit dewatering, development drilling, and permitting as well as miscellaneous expenditures required to maintain production. Mobile equipment re-build/replacement schedules and fixed asset replacement and refurbishment schedules are included. Sustaining capital costs reflect current price trends.
The overall capital cost estimate for the LOM is AU$1.8 B, as summarized in Table 1-7.
1.19    Operating Cost Estimates
Operating cost estimates are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Operating costs are based on actual costs seen during operations and are projected through the LOM plan. Historical costs are used as the basis for operating cost forecasts for supplies and services unless there are new contract terms for these items. Labor and energy costs are based on budgeted rates applied to headcounts and energy consumption estimates.
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Operating costs for the LOM are estimated at AU$11.7 B, as summarized in Table 1-8. The estimated LOM mining cost is AU$4.31/t. Base processing costs are estimated at AU$11.11/t. In addition, G&A costs are estimated at AU$2.25/t.
Table 1-7:    Capital Cost Estimate
AreaUnitValue
MiningAU$ B0.7
ProcessAU$ B1.1
Site G&AAU$ B0*
TotalAU$ B1.8
Note: numbers have been rounded; totals may not sum due to rounding. * The zero in the table represents numeric data that do not display due to the rounding.
Table 1-8:    Operating Cost Estimate
AreaUnitValue
MiningAU$ B4.2
ProcessAU$ B6.2
G&AAU$ B1.3
TotalAU$ B11.7
Note: numbers have been rounded; totals may not sum due to rounding.
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1.20    Economic Analysis
1.20.1    Economic Analysis
The financial model that supports the mineral reserve declaration is a standalone model that calculates annual cash flows based on scheduled ore production, assumed processing recoveries, metal sale prices and AU$/US$ exchange rate, projected operating and capital costs and estimated taxes.
The financial analysis is based on an after-tax discount rate of 5%. All costs and prices are in unescalated “real” dollars. The currency used to document the cash flow is US$.
All costs are based on the 2022 budget. Revenue is calculated from the recoverable metals and long-term metal price and exchange rate forecasts.
The Boddington Operations are subject to a federal tax rate of 30% on taxable income.
The economic analysis assumes constant prices with no inflationary adjustments.
The NPV5% is US$2.1 B. As the cashflows are based on existing operations where all costs are considered sunk to 1 January 2022, considerations of payback and internal rate of return are not relevant.
A summary of the financial results is provided in Table 1-9. In this table, EBITDA = earnings before interest, taxes, depreciation and amortization. The active mining operation ceases in 2034, and processing ceases in 2035; however, closure costs are estimated to 2055.
Table 1-9:    Cashflow Summary Table
ItemUnitValue
Metal prices
GoldUS$/oz1,200
CopperUS$/lb2.75
Mined Ore
TonnageM tonnes558
Gold gradeg/t0.65
Copper grade%0.11%
Gold ouncesMoz11.6
Copper poundsBlb1.3
Capital costsUS$B1.3
Costs applicable to salesUS$B9.7
Discount rate%5
Exchange rateAustralian dollar:United States dollar
(AUD:USD)
0.75
Free cash flowUS$B2.7
Net present valueUS$B2.1
Note: Numbers have been rounded; totals may not sum due to rounding. Table 1-9 contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbor created by such sections and other applicable laws. Please refer to the note regarding forward-looking information at the front of the Report. The cash flow is only intended to demonstrate the financial viability of the Project. Investors are cautioned that the above is based upon certain assumptions which may differ from Newmont’s long-term outlook or actual financial results, including, but not limited to commodity prices, escalation assumptions and other technical inputs. For example, Table 1-9 uses the price assumptions stated in the table, including a gold commodity price
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assumption of US$1,200/oz, which varies significantly from current gold prices and the assumptions that Newmont uses for its long-term guidance. Please be reminded that significant variation of metal prices, costs and other key assumptions may require modifications to mine plans, models, and prospects.
1.20.2    Sensitivity Analysis
The sensitivity of the Project to changes in metal prices, exchange rate, sustaining capital costs and operating cost assumptions was tested using a range of 25% above and below the base case values (Figure 1-1).
The Project is most sensitive to metal price changes, less sensitive to changes in operating costs, and least sensitive to changes in capital costs.
The sensitivity to grade mirrors the sensitivity to the gold price and is not shown.
Figure 1-1:    NPV Sensitivity
image_3.jpg
Note: Figure prepared by Newmont, 2021. FCF = free cashflow; op cost = operating cost; cap cost = capital cost; NPV = net present value.
1.21    Risks and Opportunities
Factors that may affect the mineral resource and mineral reserve estimates are summarized in Chapter 1.11.3 and Chapter 1.12.3.
1.21.1    Risks
The risks associated with the Boddington site are generally those expected with a large surface mining operation and include the accuracy of the resource model, unexpected geological features that cause geotechnical issues, dewatering difficulties and/or operational impacts.
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Other risks noted include:
Commodity price increases for key consumables such diesel, electricity, tires and chemicals would negatively impact the stated mineral reserves and mineral resources;
Labor cost increases or productivity decreases could also impact the stated mineral reserves and mineral resources, or impact the economic analysis that supports the mineral reserves;
While the autonomous haulage system is currently operational any unforeseen issues with this innovative system could increase costs and/or lower expected productivities;
With bauxite mining having precedence over other minerals there is a risk that any unexpected requirement to advance bauxite mining (or delay gold mining) could increase costs and/or delay the expected production profile;
Geotechnical and hydrological assumptions used in mine planning are based on historical performance, and to date historical performance has been a reasonable predictor of current conditions. Any changes to the geotechnical and hydrological assumptions could affect mine planning, affect capital cost estimates if any major rehabilitation is required due to a geotechnical or hydrological event, affect operating costs due to mitigation measures that may need to be imposed, and impact the economic analysis that supports the mineral reserve estimates;
The mine plan assumes that the existing TSF can be expanded from 600 Mt to 750 Mt. While there is sufficient time for the permitting process prior to the expansion being required in 2025, if there is a delay in the permitting process or the facility cannot be expanded, this could impact the mine plan, the mineral reserve estimates and the economic analysis that supports the mineral reserve estimates;
The mine plan assumes that a second RDA can be constructed and permitted. Newmont has established a pathway and a timeline to develop additional tailings capacity such that storage capacity will be available when needed. However, if there are changes to the assumed pathway, to the ability to construct and permit such a facility, or to the timeline assumptions, this could impact the mine plan, the mineral reserve estimates and the economic analysis that supports the mineral reserve estimates;
The mineral reserve estimates are very sensitive to metal prices. Lower metal prices than forecast in the LOM plan may require revisions to the mine plan, with impacts to the mineral reserve estimates and the economic analysis that supports the mineral reserve estimates;
There are five species classified as Threatened Species/Matters of National Environmental Significance in the Project area. Although there are site-specific management plans in place, if there is a major impact seen on the populations from mining activities, the environmental permits for the operations could be revised or even revoked. The social license to operate could also be impacted;
Climate changes could impact operating costs and ability to operate;
There is a risk to the Boddington Operations overall if the Worsley JV were to fail to renew the mining leases, as Newmont’s interest relies on the existence of valid mining tenure.
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1.21.2    Opportunities
Opportunities for the Boddington mine include moving the stated mineral resources into mineral reserves through additional drilling and study work. The mineral reserves and mineral resources are based on conservative price estimates for gold and copper so upside exists, either in terms of the potential to estimate additional mineral reserves and mineral resources or improved economics should the prices used for gold and copper be increased.
Opportunities include:
Conversion of some or all of the measured and indicated mineral resources currently reported exclusive of mineral reserves to mineral reserves, with appropriate supporting studies;
Upgrade of some or all of the inferred mineral resources to higher-confidence categories, such that such better-confidence material could be used in mineral reserve estimation;
Higher metal prices than forecast could present upside sales opportunities and potentially an increase in predicted Project economics;
Potential to link the north and south pits through the saddle area to form a single large open pit through mining and economic studies.
1.22    Conclusions
Under the assumptions presented in this Report, the Boddington Operations have a positive cash flow, and mineral reserve estimates can be supported.
1.23    Recommendations
As Boddington is an operating mine, the QP has no material recommendations to make.
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2.0    INTRODUCTION
2.1    Registrant
This technical report summary (the Report) was prepared for Newmont Corporation (Newmont) on the Boddington Operations (Boddington Operations or the Project) located in southern Western Australia (Figure 2-1).
2.2    Terms of Reference
2.2.1    Report Purpose
The Report was prepared to be attached as an exhibit to support mineral property disclosure, including mineral resource and mineral reserve estimates, for the Boddington Operations in Newmont’s Form 10-K for the year ending December 31, 2021.
Mineral resources and mineral reserves are reported for the North and South pits (also referred to as Wandoo North and Wandoo South). Mineral reserves are also estimated for material in stockpiles.
2.2.2    Terms of Reference
The Boddington Operations currently consist of two open pit mines, the North and the South pits.
Gold operations were conducted in two phases. The initial oxide operations, a combination of open pit and underground mining, ran from 1987–2001. The current operations commenced in 2009 from open pit sources. Figure 2-2 shows the location of the current and mined-out open pits, and development prospects.
Unless otherwise indicated, all financial values are reported in Australian dollars (AU$).
Unless otherwise indicated, the metric system is used in this Report.
Mineral resources and mineral reserves are reported using the definitions in Regulation S–K 1300 (SK1300), under Item 1300.
The Report uses US English.
The Report contains forward-looking information; refer to the note regarding forward-looking information at the front of the Report.
2.3    Qualified Persons
The following Newmont employee serves as the Qualified Person (QP) for the Report:
Mr. Donald Doe, RM SME., Group Executive, Reserves, Newmont.
Mr. Doe is responsible for all Report Chapters.
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Figure 2-1:    Project Location Plan
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Figure 2-2:    Mining Operations Layout Plan
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2.4    Site Visits and Scope of Personal Inspection
Mr. Doe visited the Boddington Operations on many occasions, most recently from August 25–27 2019.
During site visits to the Project, Mr. Doe inspects the operating open pits, and views the process plant and associated general site infrastructure, including the current tailings storage facility (TSF) operations. While on site, he discusses aspects of the operation with site-based staff and assesses the knowledge and abilities of the site staff to carry out their duties as required. These site discussions include the overall approach to the mine plan, anticipated mining conditions, selection of the production target and potential options for improvement. Other areas of discussion include plant operation and recovery forecasts, capital and operating forecasts and results.
Mr. Doe receives and reviews monthly reconciliation reports from the mine. These reports include the industry standard reconciliation factors for tonnage, grade and metal; F1 (mineral reserve model compared to ore control model), F2 (mine delivered compared to mill received) and F3 (F1 x F2) along with other measures such as compliance of actual production to mine plan and polygon mining accuracy. The reconciliation factors are recorded monthly and reported in a quarterly control document. Through the review of these reconciliation factors, the QP is able to ascertain the quality and accuracy of the data and its suitability for use in the assumptions underlying the mineral resource and mineral reserves estimates.
Mr. Doe also reviews Newmont’s processes and internal controls at the mine site with operational staff on the work flow for determining mineral resource and mineral reserves estimates, mineral process performance, mining costs, and waste management.
2.5    Report Date
Information in the Report is current as at December 31, 2021.
2.6    Information Sources and References
The reports and documents listed in Chapter 24 and Chapter 25 of this Report were used to support Report preparation.
2.7    Previous Technical Report Summaries
Newmont has not previously filed a technical report summary on the Project.
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3.0    PROPERTY DESCRIPTION
3.1    Introduction
The Boddington Operations are located about 130 km southeast of the city of Perth and 17 km northwest of the township of Boddington. The Project centroid is situated at approximately 32°44'15.99"S and 116°21'34.76"E. The open pit operations are centered on:
North Pit: 2°44'34"S and 116°20'24"E
South Pit: 32°45'18"S and 116°21'30"E.
3.2    Property and Title in Western Australia
3.2.1    Mineral Title
In Australia, with few exceptions, all onshore mineral rights are reserved by the government of the relevant State or Territory. Exploration for, and mining of, minerals is regulated by the general mining legislation and controlled by the mining ministry of each respective State or Territory.
The most common forms of tenure are exploration and prospecting licenses, mining leases, and general purpose leases. In most Australian states, if the holder of an exploration license establishes indications of an economic mineral deposit and complies with the conditions of the grant, the holder of the exploration license has a priority right against all others to apply for a mining lease which gives the holder exclusive mining rights with respect to minerals on the property. It is possible for an individual or entity person to own the surface of the property, and for another to own the mineral rights.
Government royalties are payable as specified in the relevant legislation in each State or Territory. A general purpose lease may also be granted for one or more of a number of permitted purposes. These purposes include erecting, placing and operating machinery and plant in connection with mining operations, depositing or treating minerals or tailings and using the land for any other specified purpose directly connected with mining operations.
Where native title has not been extinguished, native title legislation may apply to the grant of tenure and some subsequent administrative processes. Federal and State Aboriginal heritage legislation also operates to protect special sites and areas from disturbance.
The Australian Federal Government has certain oversight and approvals relating to environmental matters of national significance. The Federal Government also has the power to restrict mineral exports for the good of the country, and can exert control over most mineral production.
In Western Australia (WA), ownership of all minerals is vested in the State Government, administered the mineral industries within its own borders, which includes registering land titles; issuing exploration and development permits; overseeing mining operations (which included administration of inspections); assuring compliance with health, safety, and environmental regulations; and levying royalties and taxes.
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Exploration and mining companies and individuals may access rights to minerals in WA, subject to payment of application fees, rents and royalties, by obtaining exclusive mining title, in the form of mining “tenements”. The most common WA tenure types are summarized in Table 3-1.
Table 3-1:    Tenure Types in Western Australia
License TypeComment
Mining Prospecting License/Special Prospecting License for GoldFour-year term. Can be extended for a single four-year term. Maximum area of 200 ha for prospecting license and 10 ha for special license.
Exploration LicenseFive-year term. At the end of both the third and fourth year, must surrender 50% of license. For a license applied for and granted after 10 February 2006, the surrender requirement is 40% at the end of the sixth year. Minimum 1 block* size, maximum 70 blocks, except in areas not designated as mineralized areas, where the maximum size is 200 blocks.
Mining Lease21-year term, can be renewed. The maximum area for a mining lease (M) applied for before 10 February 2006 is 1,000 ha. After that date, the size applied for must relate to an identified orebody as well as an area for infrastructure requirements.
Retention LicenseA “holding" title for a Mineral Resource that has been identified but is not able to be further explored or mined. Cannot exceed five years and is renewable for additional periods not exceeding five years. There is no maximum area.
General Purpose LeaseFor infrastructure related to mining operations, such as camp facilities, operating machinery or depositing or treating tailings. 21-year term, and can be renewed. The maximum area is 10 ha, unless Ministerial Consent is given for a larger area. General purpose leases must be marked out and are limited to a depth of 15 m or such other depth that may be specified
Miscellaneous LicenseFor purposes such as a road, pipeline, or water. 21-year term, and can be renewed. There is no maximum area.
State AgreementState Agreements (SA) are contracts between the State and major project developers that establish a framework of rights and obligations to facilitate the development of resources and/or downstream processing projects in Western Australia. These agreements are ratified by an Act of the WA Parliament known as a State Agreement Act.
Note: * A block is a graticular unit. A graticular block is an area of land five minutes of latitude long, by five minutes of longitude wide. There are 25 sub-blocks to a block. The average block is about 75 km2 or 7,500 ha.
3.2.2    Surface Rights
Surface rights are generally divisible into two categories: Crown land and private land.
Where land is vested in the Crown, typically mining companies deal with government bodies to determine the social impact of the application, and any potential conflicts in land usage, such as forestry or national parks. Crown land can be subject to pastoral or other leasehold arrangements, in which case, mining companies need also to negotiate with the relevant leaseholder.
In the case of private land, normal free-market negotiations and agreements apply.
3.2.3    Native Title and Heritage Protection
The common law of Australia recognizes a form of native title, under the Native Title Act 1993 (Commonwealth of Australia) (Native Title Act).
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The Aboriginal Heritage Act 1972 (WA) (WA Heritage Act) applies to mining tenements and makes it an offence to, among other things, alter or damage an Aboriginal site. An Aboriginal site is defined to include any sacred, ritual or ceremonial site which is of importance and special significance to persons of Aboriginal descent. There is no requirement or need for a site to be registered in any public manner or be in any way acknowledged as an Aboriginal site for it to qualify as an Aboriginal site for the purposes of the WA Heritage Act.
The Aboriginal and Torres Strait Islander Heritage Act 1984 (Commonwealth of Australia) also applies to mining tenements and is aimed at the preservation and protection from desecration of significant Aboriginal areas and significant Aboriginal objects. An area or object is found to be desecrated if it is used or treated in a manner inconsistent with Aboriginal tradition.
3.2.4    Government Mining Taxes, Levies or Royalties
Mineral royalties are collected under either the Mining Act 1978 (WA) or State Agreement Acts which are negotiated for individual projects. In some cases, the State Agreement Act contains specific royalty clauses, while in other cases it simply refers to the Mining Act 1978 (WA) royalty sections.
In Western Australia there are three systems of mineral royalty collection used:
Specific rate: flat rate per tonne;
Ad valorem: percentage of value;
Profit-based: percentage of profit.
When any minerals are produced or obtained from a mining tenement, a quarterly production report must be lodged and a gold, silver and copper royalty is payable to the WA government.
The copper royalty is 5% of the realized copper value and is payable in Australian dollars. The realized copper value is the copper payment made by the smelter, less all contracted costs associated with shipment, treatment and refining of the concentrate and metals arising thereof. The silver royalty is 2.5% of the realized silver value and is payable in US currency. The realized silver value is the silver payment made by the smelter less the cost of silver refining. No gold royalty is payable in respect of the first 2,500 oz of gold produced by a mine in any financial year. For production in excess of 2,500 oz/a, the gold royalty is 2.5% of the gold value.
3.3    Ownership
3.3.1    Ownership History
The majority of the Boddington Operations area is located within the original boundaries of a single large tenement (M258SA) granted under a State Agreement known as the Worsley State Agreement. M258SA is held by the Worsley Joint Venture (Worsley JV) and permits the mining of bauxite only. The current participants of the Worsley JV are:
South32 Aluminium (RAA) Pty Ltd: 56%;
South32 Worsley Alumina Pty Ltd: 30%;
Japan Alumina Associates (Australia) Pty Ltd: 10%;
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Sojitz Alumina Pty Ltd: 4%.
In the early 1980s, the Worsley JV discovered gold mineralization at Boddington. The Worsley State Agreement was amended to enable the granting of all minerals leases under the Mining Act of Western Australia 1978 within the boundaries of M258SA. On grant of such mineral leases these areas would be temporarily excised from M258SA. Under the Worsley State Agreement when the Mining Act Mining Leases are relinquished, the area reverts to M258SA.
The Worsley JV established a new joint venture to exploit the gold mineralization, the Boddington Gold Mine Joint Venture (BGMJV). The BGMJV Agreement was entered into on 31 March 1987 and initially consisted of the same participants as the Worsley JV. The relationship between the bauxite/alumina operations and the gold operations was regulated under a cross-operation agreement which, in a restated form, continues as of the Report date.
The paramount principle regulating the relationship between the Worsley JV and the BGMJV was that bauxite and bauxite operations were to have priority over all other minerals within an area (the Common Area) that was defined within the boundaries of M258SA. This interpretation remains current as of the Report date. Consequently, where bauxite is found in an area of the mining leases where Newmont is active, Newmont is required to mine and stockpile bauxite on behalf of the Worsley JV.
Ownership of the BGMJV changed over time so that the participants in the Worsley JV were no longer the same as the BGMJV participants. In order to accommodate the transfer of ownership to incoming BGMJV participants whilst maintaining bauxite rights, a series of transactions were entered into that resulted in the present structure whereby the BGMJV participants sublease the mining leases on which the gold mineralization is located.
Newmont acquired its interest in the BGMJV through the transactions summarized in Table 3-2.
3.3.2    Current Ownership
Since 2009, Newmont has had 100% ownership of the BGMJV. The current parties to the BGMJV are Newmont Boddington Pty Ltd (66⅔%) and Saddleback Investments Pty Ltd (Saddleback; (33⅓%). Both companies are indirectly-wholly owned Newmont subsidiaries.
3.4    Property Agreements
3.4.1    Background
The region in which the Project is located is a well-known bauxite-alumina mining and production area now held predominantly by either the Worsley JV or the Alcoa Australia Group pursuant to their respective State Agreements. The major part of the Mining Act tenure (including M70/21–26, M70/564 and M70/799) lies within the original boundaries of a tenement granted under the Worsley State Agreement (M258SA). The remainder of the tenure (including M264SAand M70/1031) lies within the original boundaries of another State Agreement Area known as the Alcoa State Agreement (M1SA).
Newmont subleases from the Worsley JV the key mining leases upon which the Boddington operations are located, namely M70/21–26, M70/564 and M70/799. Newmont is entitled to all gold and other non-bauxite mining rights conferred by the lease. The Worsley JV retains the rights to bauxite and priority rights of access in order to mine and recover such bauxite. Where
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any new leases within the original area of M258SA are granted to the Worsley JV, the non-bauxite rights under such leases will be held by the Worsley JV for and on behalf of the BGMJV.
Table 3-2:    Transactions Through Which Newmont Acquired Its Interest in the BGMJV
YearInterestSellerPurchaser
19954 and 4/9%Japan Alumina Associates (Australia) Pty Ltd (then called Kobe Alumina Associates (Australia) Pty Limited)Newmont Boddington Pty Ltd (then called PosGold (Boddington) Pty Ltd and ultimately held by Normandy Mining Limited)
199540%Reynolds Australia Alumina LtdNewmont Boddington Pty Ltd (then called PosGold (Boddington) Pty Ltd and ultimately held by Normandy Mining Limited)
2002Newmont Mining Corporation acquires 100% of Normandy Mining Limited, which was the ultimate owner of PosGold (Boddington) Pty Ltd.
200622 and 2/9%Newcrest Operations LimitedNewmont Boddington Pty Ltd
200933 and 3/9%AngloGold Ashanti Australia LimitedSaddleback Investments Pty Ltd
3.4.2    Management Agreements
The relationship between the Worsley JV bauxite operations and the BGMJV gold operations is regulated through a cross-operation agreement. This agreement confers priority on the bauxite operations such that the operations of the Worsley JV will take priority over the operations of the BGMJV and the BGMJV are required to take reasonable measures to conserve bauxite including by mining and stockpiling bauxite on behalf of the Worsley JV.
The cross-operation agreement also requires the managers of the respective JVs to keep each other regularly informed as to current and proposed activities in order to alleviate or minimize any potential impact of one operation upon another.
3.5    Mineral Title
Newmont has an interest in a total of 89 tenements in the Boddington area The total granted area is approximately 21,249 ha and the under-application area is approximately 60,767 ha.
The actual mining area is covered by the following 13 WA Mining Act leases: M70/21–26, M70/564, M70/799, M70/1031, G70/215 and G70/218–219, and M264SA. Mining leases M70/21–26 and M70/799 are the key tenements under which gold mining activity is concentrated.
Through direct lease holding and sub-lease arrangements with the Worsley JV, Newmont holds the rights to minerals other than bauxite in proportion to the Newmont ownership percentages.
A total of 26 of the mining tenements are at an application stage. Under the Mining Act of Western Australia 1978, Mining Leases are granted for 21 years and are renewable. Five mining leases (M70/21–25) were renewed in March 2007 for a 21-year term.
Newmont has an automatic right to be granted new subleases when the tenements are renewed. The Worsley JV may renew the mining leases.
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Mineral tenure is summarized in Table 3-3, and a tenure location plan is provided as Figure 3-1.
Table 3-3:    Mineral Tenure Summary Table
LeaseHolderLease TypeLease StatusCurrent AreaApplication Date
(dd/mm/year)
Grant Date
(dd/mm/year)
Expiry Date
(dd/mm/year)
E70/2149 1
AExApplication28 blocks7/12/1998
E70/2336 1
AExApplication56 blocks25/05/2000
E70/2550 1
AExApplication7 blocks11/10/2002
E70/2562 1
BExApplication8 blocks2/12/2002
E70/3750CExApplication40 blocks30/11/2009
E70/3982CExApplication6 blocks1/10/2010
E70/4018CExApplication3 blocks9/12/2010
E70/4019CExApplication6 blocks9/12/2010
E70/4235CExApplication2 blocks30/09/2011
E70/4301CExApplication8 blocks22/02/2012
E70/4302CExApplication6 blocks22/02/2012
M70/18 2
DMApplication884 ha8/04/1983
M70/19 2
DMApplication980 ha8/04/1983
M70/27 2
DMApplication747 ha14/04/1983
M70/28 2
DMApplication720 ha14/04/1983
M70/29 2
DMApplication690 ha14/04/1983
M70/30 2
DMApplication690 ha14/04/1983
M70/31 2
DMApplication907 ha14/04/1983
M70/32 2
DMApplication972 ha14/04/1983
M70/33 2
DMApplication856 ha14/04/1983
M70/34 2
DMApplication873 ha14/04/1983
M70/35 2
DMApplication967 ha14/04/1983
M70/36 2
DMApplication639 ha14/04/1983
M70/545 2
EMApplication1000 ha13/07/1989
M70/975 1
FMApplication990 ha14/01/1997
P70/1598CPApplication27.56 ha24/06/2010
E70/710 3
EExGranted9.44 km227/04/198816/01/198915/01/1997
G70/215CGGranted28.61 ha13/05/200516/06/200915/06/2030
G70/218CGGranted51.69 ha9/02/200616/08/200615/08/2027
G70/219CGGranted9.545 ha9/02/200613/12/200612/12/2027
L70/152CLGranted171.68 ha6/08/201214/03/201313/03/2034
L70/165CLGranted2.128 ha15/05/201422/09/201421/09/2035
L70/28CLGranted1.2 ha16/08/19934/11/19933/11/2023
L70/95CLGranted31 ha9/02/20065/05/20064/05/2027
L70/96CLGranted6 ha13/07/200610/11/20069/11/2027
L70/222CLApplication33.25 ha10/09/2020
M264SA(1)CMGranted497.35 ha28/12/19871/08/198831/07/2030
M264SA(2)CMGranted408.9 ha28/12/19871/08/198831/07/2030
M70/1031CMGranted398.9 ha8/10/199811/10/199910/10/2020
M70/110 2
FMGranted5.2955 ha25/11/19833/02/19892/02/2031
M70/111 2
FMGranted121.3 ha25/11/19833/02/19892/02/2031
M70/112 2
FMGranted29.37 ha25/11/19833/02/19892/02/2031
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LeaseHolderLease TypeLease StatusCurrent AreaApplication Date
(dd/mm/year)
Grant Date
(dd/mm/year)
Expiry Date
(dd/mm/year)
M70/113 2
FMGranted64.485 ha25/11/19833/02/19892/02/2031
M70/114 2
FMGranted817.8 ha25/11/19833/02/19892/02/2031
M70/115 2
FMGranted702.2 ha25/11/19833/02/19892/02/2031
M70/116 2
FMGranted749.3 ha25/11/19833/02/19892/02/2031
M70/1220CMGranted43.335 ha4/03/200514/11/201213/11/2033
M70/1221CMGranted929.3 ha4/03/200514/11/201213/11/2033
M70/1236CMGranted946 ha17/06/200525/11/201324/11/2034
M70/1237CMGranted987 ha17/06/200525/11/201324/11/2034
M70/1238CMGranted708 ha17/06/200525/11/201324/11/2034
M70/1239CMGranted960 ha17/06/200525/11/201324/11/2034
M70/21 3
FMGranted978.05 ha14/04/19839/04/19868/04/2028
M70/22 3
FMGranted984.6 ha14/04/19839/04/19868/04/2028
M70/23 3
FMGranted966.9 ha14/04/19839/04/19868/04/2028
M70/24 3
FMGranted986.15 ha14/04/19839/04/19868/04/2028
M70/25 3
FMGranted968.38 ha14/04/19839/04/19868/04/2028
M70/26 3
FMGranted527.25 ha14/04/198328/11/201427/11/2035
M70/462CMGranted476.25 ha1/11/198812/10/198911/10/2031
M70/463CMGranted359.65 ha1/11/198812/10/198911/10/2031
M70/464CMGranted725.6 ha1/11/198812/10/198911/10/2031
M70/465CMGranted359.55 ha1/11/198812/10/198911/10/2031
M70/466CMGranted109.5 ha1/11/198812/10/198911/10/2031
M70/554 2
FMGranted38.61 ha13/07/19896/04/20045/04/2025
M70/564 3
FMGranted363.8 ha29/08/198927/04/199026/04/2032
M70/588CMGranted360.15 ha31/10/19897/06/19906/06/2032
M70/589CMGranted120.05 ha31/10/19897/06/19906/06/2032
M70/590CMGranted402.55 ha31/10/19897/06/19906/06/2032
M70/591CMGranted359.9 ha31/10/19897/06/19906/06/2032
M70/731CMGranted300 ha3/12/199126/01/199325/01/2035
M70/799 3
FMGranted925.4 ha21/01/199321/09/199320/09/2035
M70/944CMGranted1.5305 ha21/05/19965/12/19964/12/2038
M70/945CMGranted11.76 ha21/05/19965/12/19964/12/2038
M70/946CMGranted0.3385 ha21/05/19965/12/19964/12/2038
M70/947CMGranted15.63 ha21/05/19965/12/19964/12/2038
M70/948CMGranted2.496 ha21/05/19965/12/19964/12/2038
M70/949CMGranted34.925 ha21/05/19965/12/19964/12/2038
M70/950CMGranted16.465 ha21/05/19965/12/19964/12/2038
M70/951CMGranted3.88 ha21/05/19965/12/19964/12/2038
M70/952CMGranted12.13 ha21/05/19965/12/19964/12/2038
M70/953CMGranted2.6 ha21/05/19965/12/19964/12/2038
M70/954CMGranted12.865 ha21/05/19965/12/19964/12/2038
M70/955CMGranted1.349 ha21/05/19965/12/19964/12/2038
M70/976 1
FMGranted861 ha14/01/199730/08/201329/08/2034
M70/981CMGranted52.19 ha25/03/19973/09/19972/09/2039
ML70/662CMLGranted90 ha18/12/19811/01/200231/12/2022
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LeaseHolderLease TypeLease StatusCurrent AreaApplication Date
(dd/mm/year)
Grant Date
(dd/mm/year)
Expiry Date
(dd/mm/year)
ML70/663CMLGranted90 ha18/11/19811/01/200231/12/2022
ML70/751CMLGranted120 ha26/11/19811/01/200231/12/2022
ML70/752CMLGranted120 ha26/11/19811/01/200231/12/2022
ML70/753CMLGranted50 ha26/11/19811/01/200231/12/2022
Notes:
A = Newcrest Operations Ltd (22.22%), Newmont Boddington Pty Ltd (44.44%), AngloGold Ashanti Australia Ltd (33.33%). B = Hedges Gold Pty Ltd (100%). C = Newmont Boddington Pty Ltd (66.67%), Saddleback Investments Pty Ltd (33.33%). D = BHP Billiton Minerals Pty Ltd (20%), South32 Aluminium (RAA) Pty Ltd (40%), Japan Alumina Associates (Australia) Pty Ltd (10%), The Shell Company of Australia Ltd (30%). E = South32 Aluminium (RAA) Pty Ltd (50%), Japan Alumina Associates (Australia) Pty Ltd (10%), Sojitz Alumina Pty Ltd (2.5%), The Shell Company of Australia Ltd (37.5%). F = South32 Aluminium (RAA) Pty Ltd (56%), South32 Worsley Alumina Pty Ltd (30%), Japan Alumina Associates (Australia) Pty Ltd (10%), Sojitz Alumina Pty Ltd (4%).
Ex = Exploration, G = General Purpose Lease, L = Miscellaneous License, M = Mining Lease, ML = Mineral Lease, P = Prospecting Permit.
1.Newmont 100% beneficial owner - upon grant can be transferred.
2.Newmont holds right to sub-lease.
3.Newmont holds a sub-lease.
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Figure 3-1:    Mineral Tenure Location Plan
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Note: Figure prepared by Newmont, 2021.
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At the Report date, all required payments had been made and all required statutory reporting had been filed with the West Australian Department of Mines, Industry Regulation and Safety.
3.6    Surface Rights
Newmont holds sufficient surface rights to execute the life-of-mine (LOM) plan. A map showing the surface rights is included as Figure 3-2.
The Boddington Operations have freehold ownership of all the eastern and central areas of operations. Within this freehold land are all the existing residue disposal areas, the plant site, almost all of the area of the main open pit from the former oxide operation, and all but one of the smaller satellite open pits from the 1987–2001 operation.
The western portion of the operational area is outside the freehold land is Crown land covered by native forest. Mining operations can be conducted in this area but with certain restrictions imposed by the State Government through the 1978 Mining Act that are applicable to forested Crown lands.
Newmont holds freehold land to the north and to the east of the current mining areas.
To the south and east of the Project is freehold farmland. The largest farm immediately south of the mine, Hotham Farm, was acquired in December 2011.
3.7    Native Title
The Boddington Operations area was previously subject to a land claim registered under the Native Title Act and referred to as the Gnaala Karla Booja Claim. This claim has now been settled (The South West Native Title Settlement) and the settlement between the Western Australian Government and the claimant group became effective in January 2021. The consequence of this settlement is that an extensive and ongoing benefits package was provided by the West Australian Government to the claimant group and all native title claims over lands in the south west of Western Australia were released.
Obligations to enter into Aboriginal heritage agreements to protect heritage sites continue to apply to any activities in the settlement area.
To meet the then-applicable requirements for the Project, Newmont entered into a voluntary agreement with the claimant group in 2006. The Moorditj Booja Community Partnership Agreement has an end date of 31 December 2025.
3.8    Water Rights
Water rights are discussed in Chapter 15.7.
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Figure 3-2:    Surface Rights Plan
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3.9    Royalties
Production royalties are payable to the WA government and are included in the net smelter return (NSR) cut-off determination. Royalty payments were first incurred in the second half of 2009, and comprise:
Copper royalty of 5% of the realized copper value, calculated in US$ and payable in AU$;
Silver royalty of 2.5% of the realized silver value, calculated in US$ and payable in AU$;
Gold royalty of 2.5% of the gold value, except that no gold royalty is payable in respect of the first 2,500 oz of payable gold produced in any financial year.
3.10    Encumbrances
In accordance with contractual arrangements with the Worsley Joint Venture Newmont, the bauxite within the area of its operations is reserved for the benefit of the Worsley Joint Venture and Newmont is required to conserve this bauxite, including through mining and stockpiling bauxite on behalf of the WJV. Certain of its tenements also contain a reservation of bauxite in favor of Alcoa Australia.
3.11    Permitting Requirements
Permitting and permitting conditions are discussed in Chapter 17.5 of this Report. The operations as envisaged in the LOM plan are either fully permitted, or the processes to obtain permits are well understood and similar permits were granted to the operations in the past, such as TSF raises.
There are no current material violations or fines, as imposed in the mining regulatory context of the Mine Safety and Health Administration (MSHA) in the United States, that apply to the Boddington Operations.
3.12    Significant Factors and Risks That May Affect Access, Title or Work Programs
The following significant factors or risks may affect access, title, or right or ability to perform work at the Project:
Accurate closure cost provisioning, management of rehabilitation stockpiles (topsoil, gravels etc.), changes in design of facilities;
Waste rock management and generation of acid rock drainage (ARD);
Unapproved clearing of native vegetation;
Incorrect disposal of waste resulting in contamination of local area;
Spread of declared weed species or forest dieback disease;
Failure to obtain approvals and amendments to licenses within desired timeframes;
Failure to fully understand regional groundwater interactions and local dewatering activities impact on the local river system;
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Breach of commitments with the Moorditj Booja Community Partnership Agreement;
Operations impacting sacred sites;
Reputational damage with local community if complaints or concerns are not addressed.
There is a risk to the Boddington Operations overall if the Worsley JV were to fail to renew the mining leases, as Newmont’s interest relies on the existence of valid mining tenure.
To the extent known to the QP, there are no other known significant factors and risks that may affect access, title, or the right or ability to perform work on the properties that comprise the Boddington Operations that are not discussed in this Report.
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4.0    ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE AND PHYSIOGRAPHY
4.1    Physiography
The Boddington Operations are located on the Darling Plateau in an area of deeply weathered, undulating landscape that ranges from 200–500 meters Relative Level (mRL). Local relief varies by about 100 m, with shallow valley floors adjacent to broadly convex hills.
The mine is located in the catchment area of Thirty Four Mile Brook, a tributary of the Hotham River, which itself flows into the Murray River and then into the Peel Harvey Inlet.
The mining leases are located largely on private forested land typical of the eastern Jarrah (a type of eucalyptus) forest. The forests were subject to selective logging for many decades. Land to the west of the Project area is State Forest, whereas much of the land to the south was cleared for agriculture, and is commonly used for sheep grazing and mixed cropping.
4.2    Accessibility
The township of Boddington is located 130 km southeast of Perth, is 14 km due west of the main Perth–Albany Highway, and is accessed by an all-weather sealed road. The operations are 17 km northwest of Boddington, and are accessed via a sealed road from the township. Within the operations areas, high-use road surfaces are sealed, and the remaining road types are finished with a gravel surface.
The port of Bunbury is used as the trans-shipment point for copper concentrates produced from the mine, and is approximately 170 km southwest of Perth, and approximately 175 km southwest of the operations area.
4.3    Climate
The climate is Mediterranean, with hot, dry summers and cool, wet winters. The coldest month is July (average 4.5ºC), and the warmest is January (average 32ºC). Rainfall averages approximately 780 mm/a, with most precipitation falling between April and October.
Mining operations are conducted year-round.
4.4    Infrastructure
Perth is the main source of supplies, and has a large, specialized infrastructure for mining support. There are adequate schools, medical services and businesses to support the work force. A skilled and semi-skilled mining workforce was established in the region as a result of on-going mining activities. Workers commute from Boddington and surrounding settlements to the mine site.
The mine site has medical facilities to handle emergencies. In addition, medical facilities are available in Perth to support the mine’s needs.
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The Boddington Operations currently have all infrastructure in place to support mining and processing activities (see also discussions in Chapter 13, Chapter 14, and Chapter 15 of this Report). These Report chapters also discuss water sources, electricity, personnel, and supplies.
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5.0    HISTORY
The ownership changes and ownership history for the operations is summarized in Chapter 3.3.
The mine has had two operating phases. From 1987–2001, open pit mining exploited gold in oxide resources in laterite from the original Boddington laterite pit and satellite deposits. A small decline was used to extract gold in quartz veins in the north of the Boddington area. Mining ceased in 2001, the plant and infrastructure were decommissioned, and redundant equipment was sold and removed from site.
Feasibility studies during the 1990s and early 2000s examined the economics of mining low-grade hard rock mineralization within the bounds of the former Boddington laterite pit. Mining recommenced in 2009.
In 2012, evaluations were undertaken to establish the biggest possible pit scenario for permitting purpose; in this scenario, the mine life would potentially extend until 2041.
In 2014, the life-of-mine (LOM) extension project received regulatory approval and the mining proposal approval was granted in 2015. An area of mineralization, termed the CV1 Conveyor Saddle, separates North Pit from South Pit, and would only be mined in times of high gold prices as it currently does not meet reasonable prospects of economic extraction at the gold price forecast in this Report.
Table 5-1 summarizes the exploration and development history of the Boddington Operations.
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Table 5-1:    Exploration and Development History Summary Table
YearCompanyNote
1975Geological Survey of Western Australia (GSWA)Conducted a geochemical prospecting program; identified anomalous Au, As, Cu, Pb, Mo, and Zn in a zone about 5 km long and 500 m wide area within the northern extent of the Saddleback Greenstone Belt
1980Reynolds Australia MinesExplored a significant gold-mineralized zone in an area within the geochemical anomaly
1982–1985BGMJVDrill testing, mineral resource and ore (mineral) reserve estimates, mining studies, environmental studies, applications for environmental approvals
1983Discovery of an isolated area of supergene enriched copper-gold mineralization within the oxide profile below the water table
1986–1987Alcoa of Australia LimitedFeasibility studies on Hedges area, a northern continuation of the Boddington deposit
1987BGMJVOpen pit mining commenced at Boddington
1988Alcoa of Australia LimitedOpen pit mining commenced at Hedges
1990BGMJVDiscovery of high-grade gold-bearing quartz veins in the northern section of the deposit within oxide and bedrock zones
1991Construction of supergene plant
1992Construction of Jarrah Decline to access the high-grade Jarrah quartz veins
1993–2001Open pit mining of six satellite deposits
1994Wandoo low-grade deposit identified
1997
Completion of underground mining on the Jarrah quartz veins.
Feasibility study on Wandoo South
1998Purchase of Hedges (now Wandoo North)
2000Update of feasibility study using Wandoo South and Wandoo North
2001Oxide resources depleted, mine placed on care and maintenance
2002NewmontAcquired Normandy Mining interest in BGMJV
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2003BGMJVUpdated feasibility study assuming open pit mining and conventional crush–mill–float processing for copper and cyanide leach processing for gold, focusing on Wandoo South and Wandoo North
2006Board approval of open pit mining operations
2006Regulatory approval of open pit mining operations
2006NewmontAcquired Newcrest interest in BGMJV
2009
Acquired remaining interest in Boddington from AngloGold Ashanti.
Commercial production
2012Evaluated combining the North and South Wandoo open pits to extend mine life
2012Project receives interim regulatory approval
2015
Life-of-mine extension project receives regulatory approvals
Cutback S05A started
2016
Highest record gold production in a year (813 koz)
Reached cumulative 5 Moz gold produced
2018
Mill reached name plate capacity of 40 Mt/a
Cutback S09A started
2019
D6 water storage reservoir receives regulatory approvals
Cutback N03 completed
Cutback S04 completed
Ex-pit mined, since 2007, reached 1 Bt
2020
Mineral reserve addition to the North Pit
Board approval for autonomous haul system implementation
2021
Full autonomous truck fleet roll out at October 5, 2021
D6 water storage reservoir construction completed
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6.0    GEOLOGICAL SETTING, MINERALIZATION, AND DEPOSIT
6.1    Deposit Type
The deposit style is still somewhat controversial. Features consistent with porphyry-style mineralization, classic orogenic shear zones, and intrusion-related gold–copper–bismuth mineralization, are all recognized, giving rise to a variety of genetic interpretations.
Boddington does not fit any classic Archean orogenic gold deposit model, having a general lack of quartz veins and iron carbonate alteration, a copper ± molybdenum ± bismuth association, zoned geochemical anomalism, and evidence of high-temperature, saline, ore-forming fluids. Detailed petrographic, geochemical and melt inclusion studies suggest a late stage ~2,612 Ma, monzogranite intrusion as one of the principal sources of the mineralizing fluids. However, there is also local evidence for older, perhaps proto-ore, porphyry-style copper ± gold in the dioritic intrusions and patchy, locally high-grade, orogenic-style gold mineralization associated with enclosing shear zones and brittle-style deformation, which was focused on the relatively competent dioritic intrusions (Turner et al., 2020).
6.2    Regional Geology
The Boddington deposit is hosted within the Wells Formation in the Saddleback Greenstone Belt, which lies in the southeastern corner of the Archaean Yilgarn Craton (Figure 6-1).
The Saddleback Greenstone Belt comprises a steeply-dipping and extensively faulted sequence of sedimentary, felsic to mafic volcanic and pyroclastic rocks that were metamorphosed to greenschist–amphibolite facies. The belt is approximately 50 km long, 8 km wide, and is surrounded by granitic and gneissic rocks. Age dates range from 2,715–2,690 Ma.
The Saddleback Greenstone Belt was subdivided into three formations (Wilde, 1976; Figure 6-2):
Hotham Formation: Metasedimentary rocks; restricted to the southwestern part of the Saddleback Greenstone Belt;
Wells Formation: Felsic to intermediate volcanic rocks and associated granitoid intrusions. This formation is the main host to economic mineralization at Boddington;
Marradong Formation: Meta-basaltic lavas and related doleritic/gabbroic intrusions. This formation includes a significant number of ultramafic intrusions in the northern half of the Saddleback Greenstone Belt.
These units are cut by at least three generations of Proterozoic dolerite dykes.
The greenstones were emplaced in an island arc setting. Ductile deformation followed, then a second period of supracrustal deposition, again probably in an island arc setting. This second phase was accompanied by coeval granodiorite–tonalite intrusion. Greenschist facies metamorphism followed, and all rocks were affected by brittle–ductile faults.
A late monzogranite intrudes the greenstone belt just east of the mine area and is attributed to melting of mid-crustal rocks in an intraplate setting.
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Figure 6-1:    Regional Geology Setting
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Note: Figure from Turner et al., (2020).
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Figure 6-2:    Regional Geology Map
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Note: Figure from Turner et al., (2020).
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6.3    Local Geology
The Wells Formation within the greenstone belt is informally divided into three packages (Figure 6-3):
‘Lower’ Wells Formation: mixed package of intermediate andesites and diorites with mafic basalts and dolerites;
‘Main or Central’ Wells Formation: volcanic andesites and intrusive diorites; favorable mineralization host;
‘Upper’ Wells Formation: predominantly mafic package of basalts and dolerites with minor lenses of intermediate and metasedimentary rock types.
Several structures were identified that are controlling elements on the localization and form of mineralization, these being:
Northeast-striking fault corridors, which appear to compartmentalize the deposit. These structures appear to have offset favorable host rocks pre-mineralization;
Intersection of late-stage faults with early ductile quartz–sericite shear zones;
Intersection of west–northwest or northwest-trending faults with structurally-favorable lithologies;
Late brittle–ductile west–northwest- or northwest-trending faults that have subvertical dips, which show elevated mineral abundances, and mineralization-related alteration assemblages.
6.4    Property Geology
The Boddington deposit lies within a 6 km strike length of the Wells Formation. For descriptive purposes the deposit is subdivided at approximately 12,200 N into two main centers of bedrock mineralization, referred to as Wandoo North (North Pit) and Wandoo South (South Pit). The deposit area geology is shown in Figure 6-4 and a cross-section is provided as Figure 6-5.
6.4.1    Lithologies
Most of the primary mineralization at Boddington is hosted within intermediate to felsic intrusive, volcanic, and volcano-sedimentary rocks, with approximate dimensions of 9,000–11,000 mE; 8,500–14,500 mN; and -675–324 mRL. The deepest mineralization intercept to date is at approximately 1,219 m. The volcanic rocks are dominated by dacites and andesites.
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Figure 6-3:    Stratigraphic Column Schematic
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Note: Figure prepared by Newmont, 2021; modified from Turner et al. (2020).
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Figure 6-4:    Geology Map
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Note: Figure from Turner et al. (2020).
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Figure 6-5:    Geological Cross-Section
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Note: Figure from Turner et al. (2020). Section location is shown on Figure 6-4.
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The Wells Formation is intruded by at least three magmatic suites:
A suite of quartz-feldspar-phyric diorite, porphyritic diorite, and microdiorite intrusions (Diorite suite) which are spatially linked to the bulk of the Au-Cu mineralization. These were emplaced between 2,714 and 2,691 Ma (Roth, 1992; Allibone et al., 1998; McCuaig and Behn, 1998);
A separate suite of granodiorite-quartz diorite-tonalite intrusions (Eastern suite), which intrude the Marradong and Wells Formations, is dated at ~2,675 Ma (Allibone et al., 1998);
The “Late Granite” (Wourahming monzogranite) suite is the final intrusive event at ~2,612 Ma (Turner et al., 2020).
The N05 extended layback, at North Pit, is dominated by diorites, with lesser fragmental volcanic rocks. The diorites at North Pit are mainly porphyritic and generally more felsic compared to the predominantly aphyric diorites of South Pit. A suite of rhyodacitic porphyries are identified at North Pit, but is rarely observed at South Pit.
The South Pit is centered on a composite diorite stock, the Central Diorite, which has a known strike length of approximately 1,200 m and thicknesses varying from 300–600 m. The southern portion of the Central Diorite strikes north, and dips subvertically and steeply to the west, with an apparent southerly plunge. To the north, the strike of the diorite changes from north to northwest, following the orientation of a transecting dolerite dike. The dip changes from westerly, to subvertical, to steeply to the southwest.
The diorite is in contact with three volcanic units:
Southern volcanic unit: sequence of porphyritic volcanic rocks in the south and west;
Northern volcanic unit: sequence of tuffaceous volcanic rocks to the northwest;
Eastern volcanic unit: characterized by aggregated clusters of plagioclase. Separated from the Central Diorite by the Eastern Shear Zone, a north-striking, steeply west-dipping brittle, ductile tectonic feature.
Thin units of fragmental volcaniclastic rocks consisting of angular to well-rounded diorite and andesite clasts ranging from fine ash to agglomerate sizes are common within and around the diorite stock. A series of fine-grained microdiorite dykes, ranging from a few centimeters to several meters wide, cross-cuts andesite, diorite, and fragmental lithologies.
A suite of Proterozoic dolerite dykes with three prominent orientations cross-cuts the entire mine sequence, but does not host any significant mineralization.
6.4.2    Structure and Alteration
The following structural/alteration events were identified at Boddington:
Early (pre-deformation) albite and biotite–silica alteration associated with the dioritic intrusions was interpreted by Roth (1992) to signify potassic alteration (Turner et al., 2020);
D1–D2 ductile shearing was accompanied by silica–sericite–pyrite ± arsenopyrite alteration. Lacks significant gold–copper mineralization. Formed north–south-striking sub-vertical to east-dipping broad ductile shear zones;
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D3 northeast-trending ductile shearing produced mylonite zones with silica–albite–biotite–pyrite alteration. Associated with development of massive quartz veins in D2 shear zones;
D4 northwest-trending, brittle-ductile deformation. Late D4 clinozoisite–quartz–chlorite–sulfide veins commonly impart a fine fracture-fill network or mesh texture to the rocks and are generally associated with the bulk of the low-grade gold–copper mineralization. In addition, late D4 actinolite–sulfide veins have a narrow selvage of phlogopite–clinozoisite or quartz–albite, and are associated with zones of higher grade gold and copper (Turner et al., 2020).
6.4.3    Weathering
The laterite zone consists of 1–10 m of topsoil and loose gravel, underlain by 1–2 m of ferruginous duricrust, and a basal zone of 1–10 m of gibbsitic bauxite with goethite, hematite and minor kaolinite. The saprolite zone, 25–80 m thick, typically consists of mottled and ferruginous kaolinitic clays, with preserved rock textures. The saprock zone includes smectite clays, with rock fragments and well preserved textures. The saprock to bedrock transition typically occurs over a few meters.
6.4.4    Mineralization
Two mineralization stages were recognized. The earliest phase consists of widespread silica–biotite alteration and complex quartz + albite + molybdenite ± muscovite ± clinozoisite ± chalcopyrite veins, all of which are variably deformed by ductile shear zones.
The second, major, alteration stage cross-cuts the first, and comprises:
Quartz + albite + molybdenite ± muscovite ± biotite ± fluorite ± clinozoisite ± chalcopyrite veining;
Clinozoisite + chalcopyrite + pyrrhotite + quartz + chlorite veins that host low-grade gold–copper mineralization;
Actinolite + chalcopyrite + pyrrhotite ± quartz, carbonate + biotite veins that host high-grade mineralization.
Gold in the laterite zones occurs in association with iron and aluminum hydroxides. Gold in the saprolite is hosted in primary quartz veins, in clays immediately adjacent to mineralized quartz veins, and in secondary, shallow-dipping, goethitic horizons. Saprock mineralization reflects the mineralization distribution in the underlying bedrock.
Bedrock gold mineralization is hosted in veins, lenses and stockworks. Chalcopyrite and pyrrhotite the dominant sulfides, with lesser pyrite, sphalerite, cubanite, cobaltite, arsenopyrite, pentlandite, covellite, bismuthinite, digenite, marcasite and galena.
Quartz–albite–sulfide veins with coarse molybdenum, a dominant control for molybdenite distribution within the deposit, are found in both the Wandoo North and South areas but are dominant in the South Pit. Non-mineralized, thin felsic and intensely epidote-altered lithologies are seen in the Wandoo North area but are not reported from the South Pit.
Figure 6-6 to Figure 6-11 are plan and cross section images at North Pit, S05A pit and S09A pit displaying gold mineralization trends in blast hole data and exploration drill hole orientations.
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Figure 6-6:    North Pit (N03) Plan View
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Note: Figure prepared by Newmont, 2021. Image at 50 m RL.
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Figure 6-7:    North Pit (N03) Section View
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Note: Figure prepared by Newmont, 2021. Section line at 13,100 mN.
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Figure 6-8:    S05A Pit, Plan View
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Note: Figure prepared by Newmont, 2021. Image at 50 m RL.
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Figure 6-9:    S05A Pit, Section View
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Note: Figure prepared by Newmont, 2021. Section line at 10,950 mN
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Figure 6-10:    S09A Pit, Plan View
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Note: Figure prepared by Newmont, 2021. Image at 250 m RL.
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Figure 6-11:    S09A Pit, Section View
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Note: Figure prepared by Newmont, 2021. Section line at 9,300 mN.
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7.0    EXPLORATION
7.1    Exploration
7.1.1    Grids and Surveys
Mining operations use a mine grid. The local mine grid was required for two reasons:
Geological: to rotate the north orientation by approximately 40º so that the grid would align with the geology and topography of the area. Initial outcrops were running along a strike of 320º;
Survey: to create a false easting and northing at the origin of the site (10000E and 10000N). This allows a simplified coordinate system to be used and creates a grid with a scale factor of exactly 1, so there are no adjustments to any distances measured.
The grid was created from a calibration using the Map Grid of Australia Datum (MGA94, Zone 50). The vertical datum remained the same with the Australian Height Datum (AHD) used with reference to the Ausgeoid09. RL 0 for this datum is mean sea level.
The topographic surface used to delimit block models is constructed from an as-mined surveyed pickup that is updated on a monthly basis.
7.1.2    Geological Mapping
Very limited amount of bedrock exposure in the Project area restricted surface mapping, while most geological mapping was derived from logging drill core and drill chip samples.
Structural mapping is routinely completed of highwalls by the geotechnical department and blast holes are mapped for dolerite and oxide by mine geologists.
During 2020, a consultant was engaged to complete a review on structural controls on mineralization in the South Pit and exploration drill hole orientations. A third-party consultant reviewed blast hole and core data and completed targeted highwall mapping during his investigation. The primary focus of the review was S09A. The study concluded that the exploration drill hole orientation was sub-optimal to the main mineralization trend. This observation was accounted for in subsequent resource model updates. Drill hole orientation in S05A was considered to be acceptable.
7.1.3    Geochemistry
Boddington was discovered in 1980 by two surface traverses which collected lateritic samples across the Greenstone Belt in an area of geochemical anomalism identified by the GSWA (1978).
Geochemical sampling was completed as part of the initial, first-pass exploration program, and was supplemented by data obtained from drilling and mining operations. Samples collected during early programs included stream sediments (bulk-leach extractable gold or BLEG), soil (mobile metal ion -MMI) rock chip. Later, samples were collected using Newmont’s proprietary deep sensing geochemistry approach.
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After the initial discovery of Boddington, further soil samples were collected on grids ranging from 50 x 100 m out to 200 x 200 m over regional areas of the Saddleback Greenstone Belt. Additional soil samples were collected in 2020–2021 and results will be used for exploration target generation within the Saddleback Belt.
7.1.4    Geophysics
Airborne and ground geophysical surveys were completed as part of initial and greenstone-belt-wide exploration activities (Figure 7-2 and Table 7-1).
To date, geophysics at the Boddington Gold Mine and surrounding area has consisted of aeromagnetic/radiometric surveys, test surface time-domain electromagnetic (TDEM) and induced polarization/resistivity surveys, regional and semi-detailed gravity surveys, mise-a-la-masse survey, downhole TDEM surveying wireline logging of selected deep holes.
The aeromagnetic and radiometric data are primarily of use in mapping lithology and structure. Geological noise in the form of numerous dolerite dykes and what appears to be maghaemite in the laterites makes interpretation of the magnetics somewhat problematic. There are no magnetic minerals associated with the mineralization.
The regional gravity broadly maps out the ultramafic/mafic units within, and the extent of, the Saddleback Greenstone Belt.
The laterite-hosted gold mineralization does not have associated with it any other mineralization or alteration that maybe detectable or mappable using geophysical techniques, hence is not amenable to geophysical exploration. The downhole wireline logs indicate resistivity lows and EM conductivity highs associated with primary mineralization. These are inferred to be due to presence of sulfides and or the development of secondary porosity associated with faults. The mise-a-la-masse clearly indicates that mineralization at one prospect, Blob/Son of Blob, is detectable using downhole to surface direct current electrical techniques. The downhole transient electromagnetic surveys indicate these zones are not sufficiently conductive to produce a response to transient electromagnetic techniques.
The induced polarization tests at the selected prospect, Jarrah, were contaminated by the presence of powerlines and fences, and invalidated the results. However, there is enough evidence by way of the presence of disseminated sulfides associated with higher-grade primary mineralization to infer it would respond to this technique.
Geophysics is used in conjunction with other geological datasets to develop exploration targets in Newmont’s tenement package.
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Figure 7-1:    Gravity Image
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Note: Figure prepared by ___
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Table 7-1:    Geophysical Surveys
SurveyTypeDateComment
AirborneAero mag1982250 m and 500 m line spacing, 100 m flying height
Aero mag1989100 m and 250 m line spacing, 80 m flying height
Aero mag19933,220 line km at 50 m and 100 m line spacing, 50 m flying height
Aero mag19968,290 line km at 50 m and 100 m line spacing, 60 m flying height
Gravity20202,184 line km at 200 m line spacing, 80 m flying height
GroundGravity1993 to 20085,243 stations with varying station spacing in five separate data collection campaigns, comprising 3,030 regional gravity stations and 2,213 detailed stations
IP1999
2.1 km of dipole-dipole, 100 m electrode spacing. 0.36 km2 coverage of gradient array
TDEM1999
Fixed loop–Jarrah–13500N–14300N, 9800E–11000E;
Moving loop–Jarrah–13550N–13750N, 10000E–11000E;
Fixed loop–Mallee–12200N–13000N, 11400E, 12125E;
Moving loop–Mallee–12450N and 12850N, 11400E–12200E and 11400E–12000E
Wireline Logging2000Natural gamma, magnetic susceptibility, resistivity, EM conductivity. Holes logged: WBD12500-008, 300 m; WBD12770-003, 294 m; WBD13985-002, 737 m; WBD13485-001, 880 m; WBD13365-001, 819 m
Drill hole TDEM2001WBD12770, WBD13080, WBD13485, WBD13365
Mise-a-la-masse2001
Three lines surveyed; electrodes at WBD12770–120 m; WBD12770–246 m; WBD13080–312 m. Area of the survey encompassed by 9400E–9800E, 12500N–13300N, approximately 0.24 km2
MIMDAS2004 to 200697.5 line km of data collection. 50 m and 100 m dipole spacing and 175–200 m line separation. Completed 10 km at Conveyor, 12.5 km at Hume Tank; 6 km at Eastern Southern Diorite Deeps and 6 km at South Southern Diorite Deeps; 12 km plant site and 12.5 km South Southern Diorite Deeps; 38.4 km WRSFs.
Note: MIMDAS = Mt. Isa Mining Distributed Acquisition System; IP = induced polarization; TDEM = time-domain electromagnetic; WRSF = waste rock storage facility.
7.1.5    Petrology, Mineralogy, and Research Studies
Since 1980, a number of structural, petrology, mineralogy, lithogeochemical and research studies were completed on the Boddington Operations. Typically, petrological and mineralogical studies were completed in support of metallurgical investigations to determine the size, location and minerals associated with gold particles. Transmitted and reflected light petrology, X-ray detection, X-ray fluorescence, scanning electron microscopy, panning, and fluid inclusion thermometry were conducted to learn more about the metal paragenesis, gold-bearing species, and conditions of formation. Multi-element studies were used on drill core to provide multi-element data to support interpretative multi-element geochemical models.
Three honors theses, two masters theses and one doctoral thesis were completed on deposit aspects. A second doctoral study is currently underway in association with the University of Western Australia.
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7.1.6    Qualified Person’s Interpretation of the Exploration Information
The Saddleback Greenstone Belt has been extensively explored for over 50 years, and a considerable information database has developed as a result of both exploration and mining activities.
The primary exploration method is core drilling and assay collection. However, advancements in geophysics and geochemistry, together with regional geological and structural interpretations have improved the amount and quality of data that can be used for exploration vectoring and geological modelling. The geophysical and geochemical information is integrated with the drill hole database to improve deposit model interpretations.
7.1.7    Exploration Potential
The Saddleback Greenstone Belt was discovered in the late 1970s and therefore is relatively ‘young’ in comparison to mining and exploration of other greenstone belts in the Yilgarn Craton.
Exploration in the Saddleback Greenstone Belt in terms of an ability to prioritize anomalies and prospects, was limited by the level of understanding in respect of the geology, structure and the relationships these have with geochemistry, regolith/landform evolution and geophysics. There is limited outcrop of basement lithologies throughout the greenstone belt. Aspects of the geology were covered by numerous investigations, but virtually all of these have focused on the Boddington gold deposit and immediate surrounds.
Exploration historically has focused on exploring for both ‘Boddington-style’ and ‘orogenic’ systems as it was documented that the Boddington deposit is likely a hybrid hydrothermal systems with characteristics of both, and also intrusion related characteristics. Outside the mine, there is evidence of orogenic gold veins and intermediates hosting actinolite–clinozoisite–sulfide mineralization.
More recently, exploration was re-invigorated throughout the greenstone belt by Newmont with the inclusion of new district scale datasets, including an airborne gravity survey flown over the Saddleback Greenstone Belt in 2020 and the district-scale deep sensing geochemistry (DSG) program completed in 2020–2021. The combination of geophysics and surface geochemistry to assist with understanding what lies beneath the regolith has aided in developing the geological framework of the Saddleback Greenstone Belt. The datasets are assisting with recognizing new belt-scale lineaments and felsic intrusions, similar to the monzogranite possibly associated with gold mineralization at Boddington, which could host additional Boddington-style mineralization.
A number of possible cutbacks were identified adjacent to the current mine plan that may represent upside potential for the operations if these areas can be included in the LOM plan.
7.2    Drilling
7.2.1    Overview
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7.2.1.1    Drilling on Property
Approximately 159,490 drill holes were completed by December 31, 2021, for about 3.80 Mm of drilling as summarized in Table 7-2. Drill methods included core, reverse circulation (RC), aircore (AC), rotary air blast (RAB) and vacuum.
Drilling that supports the 2021 mineral resource and mineral reserve estimates consists of core and RC drill holes, and totals 7,431 for 1,445,163 m (Table 7-3).
Drill collar locations are shown on a Project-basis in Figure 7-2 and Figure 7-3 and the collars of those drill holes used in mineral resource estimation are shown in Figure 7-4.
7.2.1.2    Drilling Excluded For Estimation Purposes
Drilling excluded from the resource estimate largely comprises historical low-quality holes, grade control drilling from historic operations, and drilling related to the bauxite deposits and operations. Most excluded holes are short, within the oxide zone, and do not intersect the fresh rock that is the focus of modern gold operations.
7.2.2    Drill Methods
Vacuum, RAB and aircore drilling were primarily used as a first-pass evaluation tool of soil sample anomalies to bedrock. RC drilling was used as a mineral resource delineation tool from Project inception to 2000, and a mineral reserves infill tool from 2009–2021. Infill RC drilling programs are currently used to increase confidence ahead of mining.
Core drilling is used for exploration purposes and to support resource and reserve estimates, geotechnical investigations, hydrological campaigns, and to infill areas to increase geological confidence ahead of mining. Core drilling was completed in phases, from 1983 to the Report date.
Drill holes classified as core-drilled include both RC pre-collared holes and those wholly drilled as cores. Core drill holes are primarily drilled at NQ2 size (50.6 mm core diameter). Historically, HQ (63.5 mm) and NQ (47.6 mm) sized drill core were completed, with the amount of HQ drilling being variable, depending on ground conditions, requirements for wedge holes and if the hole was required for later installation of piezometers.
7.2.3    Logging
Vacuum drill holes were logged for lithology; RAB and aircore drill holes were also logged for alteration, veining, and mineralization.
RC logging records lithology, alteration, and mineralization.
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Table 7-2:    Property Drill Summary Table
Drill TypeNumber of HolesDrill Meters
Bore131,233
Unknown781,705
Aircore22,168877,588
Vacuum12,127114,851
Blast56,252241,261
Core3,9241,117,558
Geotech387156,465
Hammer (RC)4,294432,135
RAB2,08369,306
Underground44829,786
Grade control (RC)57,624899,050
Piezo924,205
Null1,85524,924
Total159,4903,970,067
Note: Metreage has been rounded; totals may not sum due to rounding.
Table 7-3:    Drill Summary Table Supporting Mineral Resource Estimates
Drill TypeNumber of HolesDrill Meters
Core3,6591,089,787
RC3,739347,468
Geotech core337,908
Total7,4311,445,163
Note: Metreage has been rounded; totals may not sum due to rounding.
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Figure 7-2:    Regional Drill Collar Location Plan
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Note: Figure prepared by Newmont, 2021.
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Figure 7-3:    Regional Drill Collar Location Plan in Operations Vicinity
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Note: Figure prepared by Newmont, 2021.
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Figure 7-4:    Drill Collar Location Plan for Drilling Supporting Mineral Resource Estimates
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Note: Figure prepared by Newmont, 2021.
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Historically, geological logging of core recorded lithology, alteration, mineralization, and structure in separate ‘passes’ into separate logging templates. Currently, lithology, structure and alteration are logged directly into the database via separate tables. Mineralization is incorporated into the alteration table.
7.2.4    Recovery
Recoveries were not routinely measured for RC drilling. Core recoveries are typically 100%.
7.2.5    Collar Surveys
Historically aircore, RAB, core, and RC (hammer) holes were predominantly picked up by survey after they were drilled.
Currently, core and RC collars are picked up the survey team using differential global positioning system (DGPS) instruments.
Vacuum holes are pegged by survey before drilling and drilled within 1 m of the collar location peg.
7.2.6    Down Hole Surveys
Not all RC drill holes were downhole surveyed. RC drill holes at the Hedges mine did not have downhole surveys, as was the case with BGMJV RC drill holes prior to 1995. RC drill holes from 1995–2007 were surveyed every 50 m using a single-shot Eastman camera. From 2007 until 2020, RC holes were surveyed using Reflex single- or multi-shot electronic survey tools with surveys completed at the collar and every 30 m downhole. Currently RC holes are surveyed every 30 m using a north-seeking gyro.
Historically, all core drill holes were typically downhole surveyed at 50 m intervals except where hole deviation requirements meant additional surveys for close monitoring during drilling. Surveying was conducted with a single-shot Eastman camera. During 2006, downhole surveys were routinely taken at 50 m intervals using a single-shot Eastman camera. In 2007, this was adjusted to 30 m intervals for the first part of the drill hole until a reasonable hole trace was established and then changed to 42 m intervals by the supervising geologist. A Reflex EZ digital camera was introduced in 2007, and used until 2017. Since 2018 core holes were surveyed using a north-seek gyro every 30 m.
Quality assurance and quality control (QA/QC) readings were taken using a gyro instrument by an independent business partner and compared to the original survey conducted by the drilling business partner.
Declination corrections were applied to the downhole survey data as required. The same declination correction factors were used for core and RC drilling.
7.2.7    Blast Hole Drilling
Blast hole samples are currently used to construct the ore control models that are used for material classification. The approximately 6 kg blast hole samples are collected using a hand-held auger from blast hole cones. Blast holes are drilled for drill-and-blast purposes on a 5.2 x
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5.2 m pattern for ore and 5.7 x 5.7 m pattern for waste for each shot on the pit floor. Blast holes are primarily drilled using Atlas Copco DML and PV235 rigs with a hole diameter of 229 mm. Collar location are determined using a rig-based GPS system with collar locations reviewed by the survey department prior to use in ore control models.
7.2.8    Comment on Material Results and Interpretation
The quantity and quality of the lithological, geotechnical, collar and down-hole survey data collected during the exploration and delineation drilling programs are sufficient to support mineral resource and mineral reserve estimation. The collected sample data adequately reflect deposit dimensions, true widths of mineralization, and the style of the deposits. Sampling is representative of the gold and copper grades in the deposit, reflecting areas of higher and lower grades.
Drilling is normally perpendicular to the strike of the mineralization, but depending on the dip of the drill hole, and the dip of the mineralization, drill intercept widths are typically greater than true widths.
7.3    Hydrogeology
7.3.1    Sampling Methods and Laboratory Determinations
Groundwater monitoring is completed via a network of monitoring bores and grouted multiple vibrating wire piezometer pore pressure monitoring bores, covering all areas of the active mine site (including waste rock dumps and tailings dam areas) and the regional areas peripheral to the mine operations. Monitoring data are collected for the following variables:
Phreatic water level;
Pore pressure;
Varied suites of water quality variables specific to the risk associated to the location of the monitoring bores (e.g., WRSFs, TSFs, process plants).
The groundwater sampling is conducted in accordance with Australian New Zealand Standard AS/NZS 5667.11 with all laboratory samples sent to the National Association of Testing Authorities-certified laboratory, ALS, in Perth, Western Australia. ALS is independent of Newmont.
Complimenting the groundwater monitoring programs are extensive surface water sampling programs focused on regional, mining (WRSFs and drainage), TSFs, and processing areas. The surface water samples are sent to the same laboratory as the groundwater samples with monitoring of water quality variables specific to the risk associated with the sample location.
7.3.2    Comment on Results
Pore pressures and groundwater levels are constantly monitored by use of a series of grouted multiple vibrating wire piezometer bores and standpipe groundwater monitoring bores. Site personnel routinely collect data, analyze time-series data on a monthly basis, and summarize findings in quarterly reports. As required, corporate subject matter experts and/or third party consultants undertake specialized hydrological/geotechnical evaluations.
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All surface and groundwater variables are stored in a cloud-based environmental database (Monitor Pro) along with other key environmental monitoring data (e.g., weather, air quality and waste tracking).
To the Report date, the hydrogeological data collection programs have provided data suitable for use in the mining operations, and have supported the assumptions used in the active pits.
7.3.3    Groundwater Models
A numerical groundwater flow model (FEFLOW) was developed for the groundwater and hydrogeological system in the 34 Mile Brook catchment.
7.3.4    Water Balance
A probabilistic water balance (GoldSim) model was developed for the site water balance.
7.4    Geotechnical
Geotechnical data are collected where deemed necessary to provide additional information and to verify ground conditions in the vicinity of the open pits and WRSFs. Core drilling methods are used to collect soil and or rock core. Materials encountered are logged and sampled are selected and recovered for laboratory testing where required.
In addition to information gathered during core drilling, geological structures are mapped and documented continuously as mining progresses in the open pits. This is aided through use of geo-referenced photogrammetry and high-definition point cloud scanning that is used to create digital references of structures modelled.
7.4.1    Sampling Methods and Laboratory Determinations
Laboratory testing includes a variety of tests used to derive engineering characteristics of soils and rock materials. Materials testing for strength and material characterizations include the following:
Triaxial;
Unconfined compressive strength;
Shear strength;
Tensile strength;
Soil/material classification tests.
Newmont uses National Association of Testing Authorities-accredited laboratories to ensure adequate quality and integrity of testing procedures and results. A centralized database of material logs is maintained to enable orderly access to information.
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7.4.2    Monitoring
Geotechnical systems are implemented and maintained to monitor slope and pit wall deformation. These include the following systems:
Prism arrays monitored using robotic automated total stations;
Alarmed slope stability radars which continuously scan pit walls to pick up deformation and provide alerts where required.
In addition to automated monitoring systems, routine visual checks and inspections are carried out across active mining areas.
A rockfall register is maintained to track and document events that may occur within the open pits. This is updated as required during operations and through feedback from site personnel. Known details of seismic events are also recorded within site documentation
7.4.3    Comment on Results
The geological hard rock setting at the Boddington Operations is well understood and displays consistency in the various open pits located on site. Additional testing continues to confirm the consistency of material strengths and parameters.
Some variation of soil strengths is apparent in various locations in the vicinity of operational areas, which is well understood and documented. Where further information is required, additional data may be collected.
To the Report date, the geotechnical data collection programs have provided data suitable for use in the mining operations, and have supported the assumptions used in the active pits.
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8.0    SAMPLE PREPARATION, ANALYSES, AND SECURITY
8.1    Sampling Methods
BLEG samples were collected from suitable drainages, as 2–5 kg samples, and placed in pre-numbered calico bags. The sample location was recorded, typically on aerial photographs.
Soil samples were collected as 2 kg samples from 15–20 cm depths in the soil profile, a description recorded, then samples were placed in a pre-numbered calico bag.
Rock chip samples were typically collected as 2–5 kg of grab samples from surface outcrops. Sample locations were recorded, together with a geological description.
Vacuum samples were taken at intervals that varied from 0.5–1.0 m to provide a 150 g sample. RAB samples were collected at intervals ranging from 1–2 m to provide 1–2 kg of sample. Aircore samples were usually 2–5 kg in size and collected on 1–2 m intervals.
Prior to 2008, RC samples were collected in plastic bags on 1 m intervals via a cyclone before sample reduction utilizing a riffle splitter. The samples were composited to 2 m intervals of 4–6 kg. Since 2008, samples are collected on 2 m intervals in a drop box and split using cone splitters on the RC rigs.
Drill core was sawn in half along an orientation line for sampling using either a manual core saw or an automatic core saw. The core was cut such that the orientation line was preserved. Typically, NQ core was sampled on 2 m intervals and HQ core sampled on 1 m intervals. More recently, NQ2 core was sampled on 1 m intervals and cut with automatic saws. Proterozoic dolerites were not completely sampled. Where a dolerite of >3 m thickness is encountered in the drill hole, sampling is conducted such that the sampling will stop at the contacts of the dolerites and a 1 m sample, measured from the dolerite contact, is taken from within the dolerite.
Trenching machine spoil samples were taken from the side of the trench on 2 m spacings as designated by the supervising geologist as part of ore control of clay during the oxide mining phase in the 1980–1990 period.
Currently, ore control models at Boddington are constructed using blast hole samples. Blast hole rigs drill a 229 mm diameter hole approximately 13.5 m deep to form an ~1.5 t cone of rock chips around the hole. This cone of rock chips is sampled using an auger bit connect to a battery-powered hand drill. An auger sample is taken by resting the auger three quarters the way up on the collar, angling the auger 40–60º towards the center then slowly drilling into the collar all the way to the base. The auger is then pushed straight up and slowly pulled out of the collar. The material from the collar will be caught on the flights of the auger bit, this material is spun off into a plastic bucket. This process is followed 6–10 times around the collar at evenly-spaced points until a 6–8 kg sample is collected. The sample is then tipped from the bucket into a pre-numbered and allocated sample bag.
8.2    Sample Security Methods
Sample security at the Project has not historically been monitored. Sample collection from drill point to laboratory relies upon the fact that samples are either always attended to, or are stored in the locked on-site preparation facility, or are stored in a secure area prior to shipment to the
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external laboratory. Chain-of-custody procedures consist of filling out sample submittal forms to be sent to the laboratory with sample shipments to ensure that all samples are received by the laboratory.
8.3    Density Determinations
Historically, the Project’s basement in-situ bulk density determinations were collected on a 50 m x 50 m grid across each geological domain. Analabs, an independent analytical laboratory, undertook in-situ bulk density determinations using the immersion method. Downhole geophysical logging on four drill holes in 1995 and eight drill holes in 2000 confirmed the densities determined using the immersion method. Bulk density values ranged from 2.75 t/m3 in volcanic rocks to 3.00 t/m3 in the Proterozoic dolerites.
A total of 4,285 bulk density samples were collected from resource definition and exploration drilling programs during 2006–2011. Samples were analyzed at Genalysis, which is independent of Newmont, using the immersion method.
From 2011–2019, SG samples were taken at approximately 50–60 m intervals from drill core. From 2020 density sample frequency was changed to approximately 10 m intervals. The density is measured on site using the immersion method, and then 10% of the samples are sent to the Intertek laboratory to be checked. All data are stored in the acQuire database.
8.4    Analytical and Test Laboratories
Historically, from 1983 to 2001, sample analysis was performed by several independent laboratories, including Classic Comlabs, Genalysis, Amdel, Bureau Veritas Kalassay, Analabs, Australian Assay Laboratories (AAL) in Perth, and AAL in Boddington. It is not known if the laboratories were certified at the time.
The Boddington mine site laboratory, operational between 1985 and 2001, was owned by AAL from 1985 to December 1995. From December 1995–2001, the laboratory was owned and operated by Analabs. In 1995, the mine laboratory became ISO 9002 accredited. Approximately 80% of the pre-2001 analytical data was completed by the mine laboratory.
There was no drilling in the period 2001–2005, hence no laboratories were in use.
From 2006 onward, routine analysis of samples collected during core drilling programs was undertaken at Intertek Genalysis in Perth. In 2006, Intertek Genalysis was accredited to ISO/IEC 17025, version 2005. Since February 2015, Intertek Genalysis has also conducted assaying of blast hole and RC samples.
UltraTrace Geoanalytical Laboratories (UltraTrace), Perth, acted as the umpire laboratory. During periods where sample turnaround time was paramount, UltraTrace also acted as a primary laboratory. UltraTrace was part of the Amdel Laboratory group, now part of Bureau Veritas, and was accredited to ISO/IEC 17025.
From 2008 to January 2014, ore control and RC samples were sent to the Kalassay laboratory in Perth. Kalassay achieved ISO/IEC 17025 accreditation during 2010. UltraTrace and Kalassay were acquired by the Bureau Veritas group.
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8.5    Sample Preparation
Sample preparation is summarized in Table 8-1.
8.6    Analysis
Analytical methods depended on the sample type and laboratory. Geochemical samples were primarily analyzed using bulk-leach extractable gold methods. Trench, vacuum, aircore and RAB samples were analyzed for gold by fire assay with an atomic absorption spectrophotometry (AAS) finish. Copper analysis was by either single acid digestion or three-acid digestion followed by AAS.
For RC and core samples prior to 2006, analysis of gold was by fire assay with either AAS or inductively-coupled plasma atomic emission spectroscopy (ICP-AES). Copper analysis was by either single acid digestion or three-acid digestion followed by AAS. After 2006, the typical analytical suite requested for core comprised:
Fire assay gold with AAS finish on 50 g charge;
Multi-element suite using four-acid digest with ICP optical emission spectroscopy (OES)–ICP mass spectrometry (MS) finish for copper, sulfur, arsenic, bismuth, molybdenum, antimony, cadmium and nickel. Cadmium and nickel were only performed on core samples. Molybdenum and antimony assays were discontinued in 2013 for RC holes.
Bureau Veritas Kalassay used a fire assay method and AAS finish for RC samples between 2009–2014.
Multi-element determination was not routinely performed prior to 2006, but rather performed on selected drill holes as part of detailed geological investigations. When used, the multi-element analytical suite requested typically consisted of silver, arsenic, bismuth, cerium, molybdenum, nickel, lead, antimony, titanium, tungsten, yttrium, zinc and zirconium. Multi-element analysis was performed by Amdel in 2004, using ICP-MS and ICP-AES after triple-acid digestion. A second multi-element program was undertaken in 2007 by UltraTrace. The current multi-element suite uses an ICP-MS or ICP-OES finish to achieve the acceptable lower detection levels for the elements critical to predicting concentrate quality such as arsenic and bismuth.
8.7    Quality Assurance and Quality Control
Worsley established a formal QA/QC system in January 1989 that included review of laboratory performance using methods commissioned by Worsley as well as review of the laboratory’s internal systems.
The principal monitoring system prior to June 1995 included internal round robins conducted by the BGMJV, which allowed comparison of the Boddington Laboratory against other laboratories and standards.
Post June 1995, an updated internal laboratory monitoring system (‘C’ Class) was introduced that allowed electronic capture of quality control data and statistical analysis of results. Formal review of these data was undertaken on a month-by-month basis by BGMJV staff.
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Table 8-1:    Sample Preparation Methods
LaboratorySample TypePreparation Procedure
Boddington MineCoreCrushed to P95 passing 3 mm; pulverized to P95 passing 150 µm
Intertek GenalysisCore, blast holes, RCCrushed to P90 passing 3 mm; pulverized to 95% passing minus 100 µm
UltratraceCoreCrushed to 2.8 mm; pulverized to nominal 95% passing 90 µm
Bureau Veritas KalassayBlast holes and RCCrushed to nominal 95% passing 3 mm; pulverized to a nominal 95% passing 90 µm.
Prior to 1993, one standard reference material (standard) was run routinely with each batch of samples, blanks were run on an intermittent basis, and duplicates chosen on the basis that anomalous results were checked. From 1993 until March 1998, one standard, one blank, and six duplicate samples were present in each fire assay batch of 50 samples. From March 1998, each fire assay batch of 50 included two standards, one blank, two duplicates, and two replicates.
Since 2006, standards and blanks were submitted randomly in the sample stream prior to submission to the assay laboratory. The standards and blanks submitted were all commercially purchased, up until 2010 when Boddington started creating standards from mineralization within the mining area. From 2018 there were 10 pulp standards created from Boddington material in use.
For RC samples, rig duplicates were taken at a frequency of one in 20. Duplicate samples for the drill core were not taken; however, typically 5% of the pulps were sent to an umpire laboratory for checking. At the laboratory coarse and pulp duplicates were taken from one in 20 samples. Gold assays above 3 g/t Au were routinely repeated by the laboratory. Laboratory standards were submitted into every assay batch and make up 5% of the samples being analyzed.
The grade control QA/QC process has been in place since 2008. Standards, blanks and field duplicates were preassigned to blastholes at a frequency of one in 40 for field duplicates and blanks and one in 20 for standards.
8.8    Database
All drilling-related data are stored in a Microsoft SQL server database which supports multi-user access, using the acQuire software interface. The database is administered by a dedicated database manager. Survey, geological, topographical and assay data are uploaded in digital format to the database and were supplied in digital format since the early 1990s. Historical drill data were received in hard-copy format, and manually data-entered.
All data are subject to verification checks prior to upload. Checks include coordinates outside the limits preset for that grid, geology, samples and surveys beyond the end of hole depth in the collar table, that survey dips are restricted to be between 90 and -90 and assay data/sample ID checks.
Data imported into the database must go through validation steps before being merged. The validation scripts are run on collar, survey, geology, and assay tables.
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8.9    Qualified Person’s Opinion on Sample Preparation, Security, and Analytical Procedures
The sample preparation, analysis, quality control, and security procedures used by the Boddington Operations have changed over time to meet evolving industry practices. Practices at the time the information was collected were industry-standard, and frequently were industry-leading practices.
The Qualified Person is of the opinion that the sample preparation, analysis, quality control, and security procedures are sufficient to provide reliable data to support estimation of mineral resources and mineral reserves:
Drill collar data are typically verified prior to data entry into the database, by checking the drilled collar position against the planned collar position;
The sampling methods are acceptable, meet industry-standard practice, and are adequate for mineral resource and mineral reserves estimation and mine planning purposes;
The density determination procedure is consistent with industry-standard procedures. A check of the density values for lithologies across the different deposits indicates that there are no major variations in the density results;
The quality of the analytical data is reliable, and that sample preparation, analysis, and security are generally performed in accordance with exploration best practices and industry standards;
Newmont has a QA/QC program comprising blank, standard and duplicate samples. Newmont’s QA/QC submission rate meets industry-accepted standards of insertion rates. The QA/QC data support that there are no material issues with analytical precision or accuracy;
Verification is performed on all digitally-collected data on upload to the main database, and includes checks on surveys, collar co-ordinates, lithology, and assay data. The checks are appropriate, and consistent with industry standards.
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9.0    DATA VERIFICATION
9.1    Internal Data Verification
9.1.1    Data Validation
Newmont personnel regularly visit the laboratories that process Newmont samples to inspect sample preparation and analytical procedures. Observations not in conformity with Newmont procedures are recorded in Project files and communicated to the appropriate laboratory for corrective action to be taken.
The database is checked using electronic data scripts and triggers.
Newmont has conducted a number of internal data verification programs since obtaining its Project interest, which included the following reviews:
Database, including logging consistency, down hole survey, collar coordinate and assay QA/QC data;
Sample assay bias investigations between core and RC samples;
Analytical repeatability reviews;
Check assay program results;
Geological procedures, resource models and drill plans;
Sampling protocols, flow sheets and data storage;
Trial mining and simulation studies.
9.1.2    Reviews and Audits
Newmont conducts internal audits, termed Reserve and Resource Review or 3R audits, of all its operations. These audits focus on:
Reserves processes: geology and data collection; resource modelling; geotechnical; mine engineering (long term) for open pit and underground operations; mineral processing (development); sustainability and external relations; financial model;
Operations process: ore control; geotechnical and hydrogeology (operational); mine engineering (operational) for open pit and underground operations; mineral processing (operational); reconciliation.
The reviews assess these areas in terms of risks to the contained metal content of the mineral resource and mineral reserve estimates, or opportunities to add to the estimated contained metal content. Findings are by definition areas of incorrect or inappropriate application of methodology or areas of non-compliance to the relevant internal Newmont standard (e.g., such as documents setting out the standards that are expected for aspects of technical services, environmental, sustainability and governmental relations) or areas which are materially inconsistent with published Newmont guidelines (e.g., such as guidelines setting out the protocols and expectations for mineral resource and mineral reserve estimation and classification, mine engineering, geotechnical, mineral processing, and social and
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sustainability). The operation under review is expected to address findings based on the level of criticality assigned to each finding.
The most recent Boddington Operations 3R audits were conducted in 2012, 2014, and 2019.
The 2019 3R audit found that the Boddington Operations were generally adhering to Newmont’s internal standards and guidelines with respect to the estimation of mineral resources and mineral reserves. The review team identified no material issues with the mineral resource and mineral reserve estimation processes. One moderate-impact issue was noted, in that the cut-off grades for mineral resources and mineral reserves were not significantly different for processing costs and were the same for mining costs. However, the 3R reviewers were of the opinion that the resources cut-off grade needed to include provision for potential increases in mining and processing costs due to the need for additional waste storage capacity, increasing waste haulage distances, and additional tailings storage facility capacity. The team made a number of recommendations for site-based improvements; however, none of these additional recommendations were considered critical to implement. Recommendations included suggestions for improvement in the modelling process, particularly in domaining, closer monitoring of short-term variations to the cost inputs used in mine planning to better refine the cost assumptions, and improvements in short-term mine planning processes.
9.1.3    Mineral Resource and Mineral Reserve Estimates
Newmont established a system of “layered responsibility” for documenting the information supporting the mineral resource and mineral reserve estimates, describing the methods used, and ensuring the validity of the estimates. The concept of a system of “layered responsibility” is that individuals at each level within the organization assume responsibility, through a sign-off or certification process, for the work relating to preparation of mineral resource and mineral reserve estimates that they are most actively involved in. Mineral reserve and mineral resource estimates are prepared and certified by QPs at the mine site level, and are subsequently reviewed by QPs in the Newmont-designated “region”, and finally by corporate QPs based in Newmont’s Denver head office.
9.1.4    Reconciliation
Newmont staff perform a number of internal studies and reports in support of mineral resource and mineral reserve estimation for the Boddington Operations. These include reconciliation studies, mineability and dilution evaluations, investigations of grade discrepancies between model assumptions and probe data, drill hole density evaluations, long-range plan reviews, and mining studies to meet internal financing criteria for project advancement.
9.1.5    Subject Matter Expert Reviews
The QP requested that information, conclusions, and recommendations presented in the body of this Report be reviewed by Newmont experts or experts retained by Newmont in each discipline area as a further level of data verification.
Peer reviewers were requested to cross-check all numerical data, flag any data omissions or errors, review the manner in which the data were reported in the technical report summary, check the interpretations arising from the data as presented in the report, and were asked to
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review that the QP’s opinions stated as required in certain Report chapters were supported by the data and by Newmont’s future intentions and Project planning.
Feedback from the subject matter experts was incorporated into the Report as required.
9.2    External Data Verification
Data verification by external consultants or BGMJV partners in support of mine development and operations is summarized in Table 9-1.
Many of the audits were conducted prior to the commencement of the current mining operation in 2009 to ensure that the best possible database, geological interpretations, block models, and resource estimates were available to support investment decisions.
9.3    Data Verification by Qualified Person
The QP performed site visits as discussed in Chapter 2.4. Observations made during the visits, in conjunction with discussions with site-based technical staff also support the geological interpretations, and analytical and database quality. The QP’s personal inspection supports the use of the data in mineral resource and mineral reserve estimation, and in mine planning.
The QP receives and reviews monthly reconciliation reports from the mine site. These reports include the industry standard reconciliation factors for tonnage, grade and metal; F1 (reserve model compared to ore control model), F2 (mine delivered compared to mill received) and F3 (F1 x F2) along with other measures such as compliance of actual production to mine plan and polygon mining accuracy. The reconciliation factors are recorded monthly and reported in a quarterly control document. Through the review of these reconciliation factors the QP is able to ascertain the quality and accuracy of the data and its suitability for use in the assumptions underlying the mineral resource and mineral reserve estimates.
9.4    Qualified Person’s Opinion on Data Adequacy
Data that were verified on upload to the database, checked using the layered responsibility protocols, and reviewed by subject matter experts are acceptable for use in mineral resource and mineral reserve estimation.
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Table 9-1:    External Data Verification
YearCompanyNote
2000, 2001, 2002Peter StokerAudit of assay data
2001–2002AngloGold AshantiAudit of database and mineral resource estimates
2002Golder, Newmont, and AngloGold AshantiReview of resource models
2003Golder Associates Pty Ltd (Golder)Audit of assay data, resource sensitivity study
Quantitative GeoscienceAudit of resource estimates
BGMJVAudit of resource estimates and block model
2004GolderAudit of resource model
BGMJVReview of resource estimate and model comparisons
NewcrestReview of resource estimate using alternative modelling interpretations
BGMJVSensitivity study using Newcrest alternate model
2005Dr Dominique Francois-Bongarcon (Francois-Bongarcon)Review of sampling protocols and heterogeneity issues
2007Francois-BongarconReview of assay data
2007, 2008CS-2Audit of resource estimates
2009GeoSystems InternationalAudit of resource estimates
2010AMEC Americas LtdAudit of resource estimates and block model
2017, 2018GolderAudit of resource/reserve estimates, including mine planning, geotechnical and metallurgical aspects
2021SRK Consulting (Australasia) Pty LtdReview of ore (mineral) reserves
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10.0    MINERAL PROCESSING AND METALLURGICAL TESTING
10.1    Introduction
During feasibility-stage studies from 1997–2003, several programs of metallurgical testwork were completed on the Boddington deposit. These supported the initial mining phase. A second phase of testwork was conducted in 2008, and a third phase in 2017. The post-feasibility testwork was primarily conducted at AMMTEC in Perth, now ALS Metallurgy.
10.2    Test Laboratories
ALS Metallurgy is an independent commercial metallurgical testing facility. There is no international standard of accreditation provided for metallurgical testing laboratories or metallurgical testing techniques.
10.3    Metallurgical Testwork
Work completed included mineralogy, comminution and high-pressure grind–roll (HPGR) testwork, Bond ball mill, Bond rod mill work index, and abrasion index tests, flotation and leach testwork locked cycle flotation test, scavenger tail leach, cleaner scavenger tail leach); flotation tailings cyanidation testwork; determination of thickening and slurry pumping characteristics; rheology; tailings characterization; and oxygen addition.
Copper concentrate samples were analyzed to provide a better understanding of the deleterious element content and to generate predictive models, based on feed grades, for use in mine scheduling.
The testwork includes but is not limited to:
Head assay multi-element analysis;
Ore density;
Ore moisture;
Ore bulk density (loose and compacted);
Unconfined compressive strength;
Bond crusher work index;
Abrasion index;
Bond rod mill work index;
Bond ball mill work index;
JK drop weight;
Mineralogical analysis;
Locked cycle flotation;
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Large scale kinetic flotation;
Flash flotation;
Atmospheric and pressure cyanide leaching;
Carbon kinetics;
Gravity recoverable gold;
Thickening;
Rheology;
Slurry agitation;
Residue pumping;
Residue characterization.
10.4    Recovery Estimates
Recovery models were developed using known ore parameters to predict plant recovery. In these models, the throughput rate is fixed and the grind size is allowed to vary with ore hardness, resulting in recovery differences in each of the eight geometallurgical domains.
The gold and copper recovery models for the mill are based on head grade.
The forecast LOM gold recovery is 85% and the forecast LOM copper recovery is 82%.
These forecasts do not include the application of recovery degradation to long-term stockpiles of medium-grade ore. Gold recovery is discounted by 3% and copper recovery is discounted by 6% to account for recovery degradation in the business plan. These degradation assumptions were verified by an ongoing stockpile oxidation testwork program.
10.5    Metallurgical Variability
Samples selected for metallurgical testing during feasibility and development studies were representative of the various styles of mineralization within the different deposits. Samples were selected from a range of locations within the deposit zones. Sufficient samples were taken and tests were performed using sufficient sample mass for the respective tests undertaken.
10.6    Deleterious Elements
Since commissioning in 2009, the operation has actively managed the arsenic level in plant feed and, through concentrate blending techniques, controlled the level in copper concentrate shipments to below the penalty rate trigger, hence no penalties were incurred to the Report date. Bismuth is closely associated with gold in the Wandoo ores; however, so it has resulted in penalty levels being exceeded, particularly in the first two years of operation (2009–2011). Most of the high bismuth ores have been processed, resulting in very low to no penalty charges being incurred since 2012.
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Alumina remains the largest penalty element present in the copper concentrate, with shipments regularly exposed to a penalty adjustment. However, at 4–5% Al2O3 the levels are not far off the trigger point of 3% in most contracts and a modification to the process was made during Q1 2019 with the introduction of the cleaner scalper column which reduces the non-sulfide gangue (i.e., Al2O3) in the concentrate and improves the grade of the concentrate as a result.
10.7    Qualified Person’s Opinion on Data Adequacy
The QP notes:
Metallurgical testwork completed on the Project is appropriate to establish acceptable processing for the different geometallurgical domains;
Subsequent production experience and focused investigations guided mill alterations and process changes;
Testwork was completed on mineralization that is typical of the deposit style. The testwork indicates that gold mineralization is often associated with silver as electrum, copper is primarily contained in chalcopyrite and cubanite, and the ore is primarily hosted within diorite and andesite rocks;
Testwork programs, both internal and external, continue to be performed to support current operations and potential improvements. From time to time, this may lead to requirements to adjust cut-off grades, modify the process flowsheet, or change reagent additions and plant parameters to meet concentrate quality, production, and economic targets;
The mill throughput and associated recovery factors are considered appropriate to support mineral resource and mineral reserve estimation, and mine planning;
The plant will produce variations in recovery due to the day-to-day changes in ore type or combinations of ore type being processed. These variations are expected to trend to the forecast recovery value for monthly or longer reporting periods.
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11.0    MINERAL RESOURCE ESTIMATES
11.1    Introduction
The close-out date for the sample database used in Mineral Resource estimation was 13 August 2021, with the resource model dated at 1 October, 2021.
Geological models were constructed by Boddington Operations personnel in Leapfrog, with resource estimates in Vulcan, Supervisor software and proprietary geostatistics workflows developed in conjunction with third-party consultants, Resource Modeling Solutions. Block models were built with cell dimensions that were appropriate to the deposit style, orientation and dimensions of the mineralization. Selectivity during mining, mining method, equipment size and bench height were also taken into account when determining parent cell size.
11.2    Exploratory Data Analysis
Exploratory data analysis was completed to confirm the statistical configuration of gold and copper estimation domains. In addition, contact analysis was conducted to configure the sharing of data where required for estimation purposes across the contact(s) of adjoining domains.
11.3    Geological Models
Models were built for:
Geology: dolerite lithology and weathering surfaces; gold, copper, sulfur, arsenic, molybdenum and bismuth estimation domains;
Gold domains are constructed considering structure, alteration but are largely lithology and grade shells;
Copper: grade shell wireframes constructed by dividing the deposit into four regions based broadly on lithology and, within these regions interpolating high-grade (1,500 ppm) and medium-grade (750 ppm) grade shells;
In-situ bulk density;
Geotechnical: five domains in South Pit, six domains in North Pit;
Structural: 10 major structures in South Pit, and one major structure in North Pit;
Acid rock drainage: net acid-producing potential (NAPP) estimated.
The data used for the model construction were approved drill holes extracted from the GED. Data were validated using Vulcan ISIS validation tools and on-screen visualization. Issues identified during validation were corrected by the project geologist and posted back to the GED. A final extraction was then made to incorporate the validated data into the geological modeling.
11.4    Density Assignment
In-situ bulk density (density) values were interpolated using ordinary kriging (OK) to provide block estimates when sufficient data were available. Domains that did not contain any in-situ bulk density data were assigned a mean value of 2.75 g/cm3. An in-situ bulk density of 3.00 g/
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cm3 was applied to all modelled dolerites. Weathered bulk density values were assigned to regions delineated by the various weathering products.
11.5    Composites
All assay data were composited to 12 m lengths downhole to match the estimated block and bench height and broken on the start of each domain. Composites were length weighted for statistical analysis and estimation. Intervals <6 m were combined with adjacent longer intervals at drill hole ends.
11.6    Grade Capping/Outlier Restrictions
Outlier high grades were statistically determined and grade capped to optimize estimation performance. Capping was defined via exploratory data analysis and applied on the composite data by estimation domain. High-grade cuts were applied to each of the gold, copper, arsenic, bismuth, molybdenum and sulfur domains.
11.7    Variography
Spatial variability of the grades for gold, copper, arsenic, bismuth, molybdenum and sulfur was modeled through directional variography of capped 12 m composites. Blast hole data were used to improve definition of variogram profiles and directions in domains with production coverage.
11.8    Estimation/interpolation Methods
Block models were constructed and estimated in Vulcan software. The final block size used in the resource block model was a regularized size of 20 x 20 x 12 m to match the current SMU. The model was constructed in the Boddington Mine Grid orientation with no additional rotation or sub blocking applied. The blocks were coded for dolerite domains and weathering profile percentages to honor the dilution from dykes and oxidized units.
Ordinary kriged estimates for gold, copper, sulfur, arsenic, molybdenum and bismuth and density were conducted in a separate block model with a parent block size of 10 x 20 x 12 m with sub-blocking to 5 x 5 x 6 m. Domains for each element were also coded into this model. The smaller block model was used for the estimation of the metals and density as it better reflects the resolution of the geological domains. The estimation results were subsequently combined into the larger final block model via a block regularization process.
The estimation methodology included the following:
Analysis to optimize the parameters used for sample searches, including minimum/maximum number of data, distance to samples, and number of data used per drill hole;
Domains treated as mix of hard, soft and firm boundaries based on contact analysis;
Grade interpolations run as two passes, with progressively larger search distances and with protection of blocks estimated in the first pass; The first pass search ellipse is defined from the variogram and scaled to 70 m. The second pass scaled up to 400 m;
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The second pass estimate is adequate to prevent unassigned blocks within mining areas.
Block discretization of 4 x 4 x 1.
Key parameters used in the kriged estimates are provided in Table 11-1.
Grade dilution was applied due to unavoidable mining of small dolerite bodies. Modifying factors were applied to sulfur and copper, based on historical plant reconciliation data.
11.9    Validation
Validation used Newmont-standard methods, including a combination of visual checks, swath plots, global statistical bias checks against input data, alternate estimation methods and reconciliation with historical mine/plant performance.
All models were independently peer reviewed to ensure consistency and standards required to support business and operations planning and public reporting of mineral resources and mineral reserves. Modeling methodologies applied were externally audited in early 2021 by third-party consultants SRK, with no material findings.
The validation procedures indicated that the geology and resource models used are acceptable to support the mineral resource estimation.
11.10    Confidence Classification of Mineral Resource Estimate
11.10.1    Mineral Resource Confidence Classification
Resource classification parameters were based on the results of a 2020 drill hole spacing simulation study in accordance with Newmont standards. Mineral resource classification was undertaken based primarily on drill spacing and number of drill holes used in the estimate (Table 11-2).
A quantitative assessment of geological risk was undertaken using Newmont-standard methods and applied on a block by block basis. Primary risks to resource quality include quantity and spacings of drill data, geological knowledge, geological interpretation and grade estimates. All identified risks are within acceptable tolerances with associated management plans.
Table 11-1:    Kriging Estimate Parameters
ModelValue
Min # samples6
Max # samples6–8
Max # samples per drill hole2
Min # of drill holes3
Max # of drill holes8
Max # of composites per octantNone
Single/multi pass estimateMulti
Large dolerite dilution % post processing10%
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Table 11-2:    Mineral Resource Confidence Classifications
Confidence
Category
Search
Configuration
Measured
3 holes within average distance <27.5 m
Indicated
3 holes within average <55 m
Inferred
3 holes within average distance <82.5 m
11.10.2    Uncertainties Considered During Confidence Classification
Following the analysis in Chapter 11.10.1 that classified the mineral resource estimates into the measured, indicated and inferred confidence categories, uncertainties regarding sampling and drilling methods, data processing and handling, geological modelling, and estimation were incorporated into the classifications assigned. The areas with the most uncertainty were assigned to the inferred category, and the areas with fewest uncertainties were classified as measured.
11.11    Reasonable Prospects of Economic Extraction
11.11.1    Input Assumptions
For each resource estimate, an initial assessment was undertaken that assessed likely infrastructure, mining, and process plant requirements; mining methods; process recoveries and throughputs; environmental, permitting and social considerations relating to the proposed mining and processing methods, and proposed waste disposal, and technical and economic considerations in support of an assessment of reasonable prospects of economic extraction.
Cut-off grades will vary over the life of an open pit, due to variations in capital and operating costs, mine and mill performance, metal prices, exchange rates, and potentially, individual deposit geological and grade characteristics.
Mineral resources considered amenable to open pit mining methods are reported within a mine design that uses a Lerchs–Grossmann pit shell with the parameters set out in Table 11-3.
11.11.2    Commodity Price
Commodity prices used in resource estimation are based on long-term analyst and bank forecasts, supplemented with research by Newmont’s internal specialists. An explanation of the derivation of the commodity prices is provided in Chapter 16.2. The estimated timeframe used for the price forecasts is the 14-year LOM that supports the mineral reserve estimates.
11.11.3    Cut-off
The cut-off grade is defined by a revenue cut-off to account for both copper and gold revenue with two product streams, gold doré and copper concentrate. The block revenue is calculated on the net smelter return (NSR) basis which is the dollar return expected from the sale of the concentrate produced from a tonne of in situ material. The NSR calculation takes into account concentrate shipping and smelting and refining costs. The NSR cut-off for mineral resource reporting is AU$17.34/t milled. The incremental (mill) cut-off is AU$14.99/t milled.
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11.11.4    QP Statement
The QP is of the opinion that any issues that arise in relation to relevant technical and economic factors likely to influence the prospect of economic extraction can be resolved with further work. The mineral resource estimates are performed for a deposit that is in a well-documented geological setting; the Boddington deposit has seen nearly four decades of active open pit operations conducted by Newmont and other parties; Newmont is familiar with the economic parameters required for successful operations in the Boddington area; and Newmont has a history of being able to obtain and maintain permits, and the social license to operate, and meet environmental standards in the Boddington area.
There is sufficient time in the 14-year timeframe considered for the commodity price forecast for Newmont to address any issues that may arise, or perform appropriate additional drilling, testwork and engineering studies to mitigate identified issues with the estimates.
Table 11-3:    Input Parameters, Open Pit
ParametersItemUnitValue
PriceGoldUS$/oz1,400
CopperUS$/lb3.25
Exchange rateUS$:AU$0.75
RoyaltyGold% payable2.5
Copper% payable5.0
Metallurgical recoveryGold%85
Copper%82
Mining costAU$/tonne4.67
Processing costAU$/milled10.46
General and administrative costsAU$/milled1.53
Sustaining capitalAU$/milled2.20
Incremental mineralization costs (closure, haul, conversion)AU$/milled0.05
Overall pit slope anglesDegreesVariable, approximately 37–52
Cut-off NSR (incremental)AU$/t milled14.99
Cut-off NSR (stockpile)AU$/t rehandled17.34
11.12    Mineral Resource Statement
Mineral resources are reported using the definitions set out in SK1300, on a 100% basis. The reference point for the mineral resources is in situ. Mineral resources are current as at December 31, 2021. Mineral resources are reported exclusive of those mineral resources converted to mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
The estimates for the Boddington Operations are provided in Table 11-4 (measured and indicated; gold) and Table 11-5 (inferred; gold), and Table 11-6 (measured and indicated; copper) and Table 11-7 (inferred; copper).
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Table 11-4:    Measured and Indicated Mineral Resource Statement (Gold)
Area 
Measured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
North Pit28,5000.4743061,9000.511,01090,4000.501,440
South Pit67,8000.551,200118,6000.552,110186,3000.553,310
Open Pit Sub-total96,2000.531,640180,5000.543,110276,7000.534,750
Boddington Total96,2000.531,640180,5000.543,110276,7000.534,750
Table 11-5:    Inferred Mineral Resource Statement (Gold)
AreaInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
North Pit1,4000.520
South Pit1,9000.530
Open Pit Sub-total3,3000.550
Boddington Total3,3000.550
Table 11-6:    Measured and Indicated Mineral Resource Statement (Copper)
AreaMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
North Pit28,5000.085061,9000.1014090,4000.09190
South Pit67,8000.12170118,6000.12310186,3000.12490
Open Pit Sub-Total96,2000.11220180,5000.11450276,7000.11670
Boddington Total96,2000.11220180,5000.11450276,7000.11670
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Table 11-7:    Inferred Mineral Resource Statement (Copper)
AreaInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
North Pit1,4000.10
South Pit1,9000.10
Open Pit Sub-Total3,3000.110
Boddington Total3,3000.110
Notes to accompany mineral resource tables:
1.Mineral resources are current as at December 31, 2021, and are reported using the definitions in SK1300 on a 100% basis. The Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.The reference point for the mineral resources is in situ.
3.Mineral resources are reported exclusive of mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
4.Mineral resources that are potentially amenable to open pit mining methods are constrained within a designed pit . Parameters used are summarized in Table 11-3.
5.Tonnages are metric tonnes rounded to the nearest 100,000. Gold grade is rounded to the nearest 0.01 gold grams per tonne. Copper grade is reported as a %. Gold ounces and copper pounds are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold ounces are reported as troy ounces, rounded to the nearest 10,000. Copper is reported as pounds. Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”).
6.Totals may not sum due to rounding.
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11.13    Uncertainties (Factors) That May Affect the Mineral Resource Estimate
Factors which may affect the mineral resource estimates include:
Metal price assumptions;
Changes to the assumptions used to generate the NSR cut-off;
Changes to design parameter assumptions that pertain to the conceptual pit shell design that constrain the mineral resources, including changes to geotechnical, mining and metallurgical recovery assumptions, and changes to royalties levied and any other relevant parameters that are included in and impact the NSR cut-off determination;
Changes in interpretations of mineralization geometry and continuity of mineralization zones;
Changes to the dilution skin percentages used for large dolerite dykes;
Assumptions as to the continued ability to access the site, retain mineral and surface rights titles, maintain the operation within environmental and other regulatory permits, and retain the social license to operate.
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12.0    MINERAL RESERVE ESTIMATES
12.1    Introduction
Measured and indicated mineral resources were converted to mineral reserves. Mineral reserves are estimated assuming open pit mining.
All Inferred blocks are classified as waste in the cashflow analysis that supports mineral reserve estimation.
The NSR approach is the same as summarized for the mineral resources in Chapter 11.11.3. The NSR cut-off for mineral reserves reporting is AU$17.06/t milled, which includes stockpile rehandle. The incremental (mill) cut-off is AU$14.85/t milled.
12.2    Pit Optimization
For mineral reserves, Newmont applies a time discount factor to the dollar value block model that is generated in the pit-limit analysis, to account for the fact that a pit will be mined over a period of years, and that the cost of waste stripping in the early years must bear the cost of the time value of money.
Pit discounting is accomplished by running the pit-limit “dollar” model through a program that discounts the dollar model values at a compound rate based on the depth of the block. Discounting is applied to future costs as well as future revenues, to represent the fact that mining proceeds from the top down within a phase.
Optimization work involved floating pit shells at a series of gold prices. The pit shells with the highest NPV were selected for detailed engineering design work. A realistic schedule was developed in order to determine the optimal pit shell; schedule inputs include the minimum mining width, and vertical rate of advance, mining rate and mining sequence.
12.3    Optimization Inputs and Assumptions
The mineral reserves LOM schedule was developed using MineSight software and spreadsheet-based scheduling tools.
The mine plan is based on a 42 Mt/a mill throughput. The schedule was developed at an NSR cut-off of AU$17.06/t, incorporating the processing cost, metallurgical recovery, incremental ore mining costs, process sustaining capital and tailings dam related rehabilitation costs. The net revenue calculation assumes a gold price of US$1,200/oz or AU$1,600/oz, and a copper price of US$2.75/lb or AU$3.66/lb. The assumed exchange rate for mineral reserves was 0.75 US$:AU$. Mineral reserves are reported above an NSR cut-off of AU$17.06/t, using the inputs in Table 12-1.
Pit designs are full crest and toe detailed designs with final ramps based on the selected optimum Whittle cones. Pit designs honor geotechnical guidelines with 15.2 m catch berms.
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Table 12-1:    Input Design Parameters
ItemUnitValue
Gold priceAU$/oz1,600
Copper priceAU$/lb3.67
Exchange rateUS$:AU$0.75
Gold royalty%2.5
Copper royalty%5.0
Mill throughputMt/a42
Mill recovery gold (average recovery % at LOM grade 0.67 g/t Au)%85
Mill recovery copper (average recovery % at LOM grade 0.1% Cu)%82
Base processing cost-without rehandleAU$/t milled10.46
Sustaining capital (plant and G&A)AU$/t mined1.85
incl. CRF = 1.102.08
Site and regional G&A (exclude capital costs)AU$/t milled2.27
Incremental ore, resource conversions and closure (LOM–FASB)AU$/t milled0.04
Breakeven mill cut-offAU$/t milled14.85
Stockpile rehandlingAU$/t rehandled
1.48
Recoveries degradationAU$/t milled0.73
Breakeven stockpile cut-offAU$/t milled17.06
LOM operating mining costAU$/t mined4.67
Mining capitalAU$/t mined0.76
incl. CRF = 1.100.83
Note: LOM = life-of-mine; CRF = capital recovery factor; G&A = general and administrative; FASB = Financial Accounting Standards Board.
Newmont updates its LOM plan each year in preparation for the business plan. All aspects of the plan, including pit stage design and sequencing, cut-off optimization and WRSF and stockpiling strategies are reviewed.
The process plant processes higher-grade ores delivered from the mine at an elevated cut-off. The ore between the elevated cut-off and the marginal cut-off is stockpiled for later processing at the end of the mine life.
Most of the ore will be directly fed to the process plant; however, some re-handle is required. Direct feeding to the crusher is constrained by where the ore is located in the open pit and the crusher availability. Some higher-grade ore is stockpiled and fed back to the crusher when required. Approximately 50% of feed is re-handle material from the stockpiles.
12.4    Ore Loss and Dilution
The block models were constructed to include the expected dilution based on mining methods, bench height and other factors. The current mine and process reconciliation support this assumption.
Dilution is applied to the resource model in two manners which result in a cumulative dilution of approximately 10%. Dilution is applied through:
Reduction of grade associated with small dolerites;
Expansion of large dolerite waste volumes.
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A nominal background gold grade is applied to reduce the grade in the percentage of blocks which contain small dolerites.
Large dolerite dykes are removed from the resource model and contain no ore. Large dolerites are selectively mined, but due to the hardness and negative impact to the mill, accidentally mining dolerites as ore is avoided. A 10% dilution factor is applied to large dolerite volumes to capture the operational constraints.
Blocks containing >50% oxide material are classified as waste and have the grade set to zero.
12.5    Stockpiles
Stockpile estimates were based on mine dispatch data; the grade comes from closely-spaced blasthole sampling and tonnage sourced from truck factors. The stockpile volumes were typically updated based on monthly surveys. The average grade of the stockpiles was adjusted based on the material balance to and from the stockpile.
12.6    Commodity Prices
Commodity prices used in mineral reserve estimation are based on long-term analyst and bank forecasts, supplemented with research by Newmont’s internal specialists. The estimated timeframe used for the price forecasts is the 14-year LOM.
12.7    Mineral Reserve Statement
Mineral reserves were classified using the definitions set out in SK1300, on a 100% basis. The mineral reserves are current as at December 31, 2021. The reference point for the mineral reserve estimate is at the point of delivery to the process facilities. Mineral reserves are reported in Table 12-2 (gold) and Table 12-3 (copper). Tonnages in the table are metric tonnes.
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Table 12-2:    Proven and Probable Mineral Reserve Statement (Gold)
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade (g/t Au)Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade (g/t Au)Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade (g/t Au)Cont. Gold
(x 1,000 oz)
North Pit78,8000.651,64094,7000.591,810173,5000.623,450
South Pit158,6000.733,720144,4000.713,280303,0000.727,000
Open Pit Sub-Total237,4000.705,360239,1000.665,090476,5000.6810,450
Stockpile Sub-Total2,6000.686079,1000.431,09081,8000.441,140
Boddington Total240,1000.705,420318,2000.606,170558,3000.6511,590
Table 12-3:    Proven and Probable Mineral Reserve Statement (Copper)
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
North Pit78,8000.1017094,7000.11240173,5000.11410
South Pit158,6000.11380144,4000.11350303,0000.11730
Open Pit Sub-Total237,4000.10550239,1000.11590476,5000.111,140
Stockpile Sub-Total2,6000.091079,1000.0915081,8000.09160
Boddington Total240,1000.10550318,2000.11740558,3000.111,300
Notes to accompany mineral reserve tables:
1.Mineral reserves are current as at 31 December, 2021. Mineral reserves are reported using the definitions in SK1300 on a 100% basis. The Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.Mineral reserves are reported at the point of delivery to the process plant.
3.Mineral reserves that will be mined using open pit mining methods are constrained within a designed pit. Parameters used are included in Table 12-1.
4.Tonnages are metric tonnes rounded to the nearest 100,000. Gold grade is rounded to the nearest 0.01 gold grams per tonne. Copper grade is %. Gold ounces and copper pounds are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold ounces are reported as troy ounces, rounded to the nearest 10,000. Copper is reported as pounds. Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”).
5.Totals may not sum due to rounding.
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12.8    Uncertainties (Factors) That May Affect the Mineral Reserve Estimate
Areas of uncertainty that may materially impact the mineral reserve estimates include:
Changes to long-term metal price and exchange rate assumptions;
Changes to metallurgical recovery assumptions;
Changes to the input assumptions used to derive the pit designs applicable to the open pit mining methods used to constrain the estimates;
Changes to the forecast dilution and mining recovery assumptions;
Changes to the cut-off values applied to the estimates;
Variations in geotechnical (including seismicity), hydrogeological and mining method assumptions;
Changes to environmental, permitting and social license assumptions.
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13.0    MINING METHODS
13.1    Introduction
Mineral reserves were estimated assuming open pit mining, and the use of conventional Owner-operated equipment.
13.2    Geotechnical Considerations
A number of geotechnical and hydrological studies were completed to support mining, feasibility, and environmental inputs. The geotechnical model for the Boddington deposit was defined by geotechnical drilling and logging, laboratory test work, rock mass classification, structural analysis, and stability modeling. The hydrological model was based on a three-dimensional flow model, historic pumping rates from the Jarrah Pit, and drill data.
The rock mass was characterized and grouped into geotechnical domains for design purposes using geotechnical and hydrogeological models as well as operational experience. A detailed structural model was constructed and maintained for input to both long term and operational design.
Ground support and rock fall mitigation measures used include:
Cable bolting to reinforce unstable wedges and slabs;
Wire-mesh for highly fractured/broken rock mass or poor scaling that creates significant amount of unstable and loose rock of the pit face;
Rock fall fence or barrier that can be installed on a wide and stable catch berm or pit wall to capture rock fall from the benches above;
Manual scaling by rope access to remove loose/unstable rock in areas where safe access is not available;
Machine scaling and chaining of crests as part of the Batter Turn Over (BTO) process including using an excavator followed by a rock breaker to scale walls as part of routine work.
A combination of the above methods.
Table 13-1 provides a brief summary of the geotechnical domains in operational pits and Table 13-2 provides the design configurations for all domains.
The minimum pit slope design acceptance criteria were specified in the Newmont Corporation – Surface Ground Control Standard - Open Pit (NEM-TES-STA-003, dated 31 May 2019). The acceptance criteria were adopted from Read and Stacey (2009) and are in line with mining industry standards.
Open pit designs were assessed and reviewed prior to pit excavation to ensure adequacy and integrity of design geometry with consideration to ground conditions. Three-dimensional models were developed for design geometry and various geological materials and structural features.
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Table 13-1:    Geotechnical Domains
DomainDescription
Fresh andesite and diorite
(all pits)
Andesite and diorite host rock which is exposed in most areas of all pits. There is no strong joint orientation. Joints are widely spaced (>1.0 m). Near-horizontal undulating fractures are reasonably common, and there are only few intermediate faults. Non-persistent moderate dipping (30º to 60º) closed joints are the main weakness planes that often open-up during blasting, which create incipient structures controlling crest damage
Weathered andesite and diorite
(all pits)
Andesite and diorite moderately to slightly weathered rock beneath the contact with oxide between the Saprolite and Fresh surfaces. This unit is clay altered with broken to highly fractured rocks. It has weaker joint conditions than the fresh material and is prone to increased crest loss when blasted and over time due to degradation. Increased ground support to maintain wall integrity and catch capacity is required in this domain
Oxide/transition
(all pits)
Poor rock-mass, soil strength, silty material. Completely to highly weathered material with relic structure
Oxide/transition – S09 West Wall
(S09 pit)
Poor rock-mass, soil strength, silty material. Completely to highly weathered material with relic structure. Batter angle laid back due to bench-scale slumping in previous cutback with no impact on overall slope angle
Oxide/transition – S09 East Wall (S09 pit)Poor rock-mass, soil strength, silty material. Completely to highly weathered with relic structure. This material has a higher degree of saturation compared to the western wall oxides. Relic structure is often dipping in to the pit
Backfill
(all pits)
Residual strength unspecified oxide materials from historic mining
Vertical dolerites
(all pits)
There are several late stage dolerite intrusion events which are similar from a geotechnical perspective. This is an extremely strong rock mass with UCS > 200 MPa. Moderately-spaced (0.3–1.0 m) planar joints are the main weakness causing this rock mass to be more sensitive to blasting (direction and set-up) and long-term degradation compared to the andesite and diorite in Domain 1
Sub-horizontal dolerite
(South Pits)
Characterized by the existence of broken zones or layers associated with north-northeast dipping (15° to 30°) sub-horizontal dolerite sills that are exposed on the north and southeast walls of South Pits. The thicknesses of the broken zones vary from 0.3–8 m
Western shear zone
(North Pit)
Near vertical, moderately to well-developed foliation, shear zone of andesite and diorite, including a north–south-trending dolerite dyke. The shear within this wall is highly persistent, likely to below the final pit floor, with parallel structures. This domain requires extreme care when blasting, and is much more sensitive than the surrounding rock mass of Domain 1
A-breccia and South Bowl
(North Pit)
Operational experience has shown that this area is challenging for wall control blast and excavation. Response to blasting and excavation suggested that rock mass is harder than in other areas. Slope performance is mostly unsatisfactory with poor crest retention. An above-average amount of scaling and a wider design catch berm are therefore required
Sentinels wall
(North Pit)
The Sentinel structural set is steeply dipping into the pit at 45–75º along the west wall of the N03 pit for the full height of the wall. Crest retention along these structures is poor and significant ground support is required. This domain requires extreme care during blasting
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Table 13-2:    Geotechnical Domain Design Configurations
DomainBench Height (m)
BFA 1st Flitch
(˚)
BFA 2nd + 3rd Flitch (˚)
Batter Height (m)IRA
(˚)
Step-in berm (m)Berm Width (m)Berm Gradient (%)
Fresh andesite and diorite1275903660.81.315.2
Weathered andesite and diorite1275903660.81.315.2
Oxide/transition1254123012
Oxide/transition – S09 west wall124512309.0-3 (into pit)
Oxide/transition – S09 east wall1245122810.5-3 (into pit)
Backfill2020
Vertical dolerites12759036581.317.3
Sub-horizontal dolerite broken zone12659036561.317.0
Western shear zone12759036591.316.7
A-Breccia and South Bowl12759036591.316.7
Sentinels wall12759036591.316.7
The models were used to assess slope stability. Slope stability models incorporated material parameters derived during ground investigations, laboratory testing and assessments of in-situ conditions as appropriate. Hydrogeological data from dedicated monitoring stations were also used to characterize geotechnical slope stability models.
Overall pit slope angles varied between approximately 37–52º according to geology and location of pit infrastructure such as ramps and haul roads. Inter-ramp slope angles in hard rock varied between 58–60.8º depending on specific conditions encountered within pit walls. The inter-ramp slope angles within oxide slopes varied between 20–30º.
A continuous system of assessment was implemented and adhered to during ongoing excavation processes in order to document and verify geological conditions as they were encountered. A structural model was maintained, updated and made available to help inform ongoing operations. Geotechnical staff were also employed to offer progressive assessments of conditions encountered during excavation including providing documented guidance to inform pit development initiatives. Automated deformation monitoring systems including alarmed slope stability radars and automated prism monitoring stations were also maintained and used to supplement performance assessment.
13.3    Hydrogeological Considerations
The pit dewatering system will continuously receive large volumes of groundwater and surface run-off over the LOM. The sum of active and passive dewatering was relatively constant at approximately 140 L/sec (4.4 GL/year), of which water carts consume about 0.5–0.8 GL/year. The long-term dewatering strategy assumes that this trend continues throughout the LOM.
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The infrastructure requirement is 460 L/sec per pit (excluding satellite pits) when mining at the bottom of pit. The primary reason for the high designed maximum pumping rate is for mitigation pit flooding risks. The water management strategy is to maximize the use of the groundwater within the process plant and the loss of excess water by evaporation from the TSF. There is provision in place to capture excess surface water in water storage reservoirs.
The LOM pit dewatering plan will strategically upgrade the in-pit sump pump system (passive dewatering) and dewatering-bores (active dewatering) to cope with operational needs as required.
13.4    Operations
The LOM plan envisages mining at an average rate of approximately 80 Mt/a for 14 years, peaking at 93 Mt/a in 2035, with a maximum rate of advance by pit stage of seven benches per annum and an average of five benches (60 m) per year.
The mine life will extend to 2034 with material mined from the open pit. Milling will cease in 2035 after treatment of stockpiled ore.
The mine plan assumes eight pit phases remain. An illustration showing the final pit layout is provided in Figure 13-1.
Pit design assumptions include haul road widths for two-way travel of 38 m, maximum ramp grades of 10% and minimum pit-bottom widths of 75 m as a safety measure.
13.5    Blasting and Explosives
All drilling operations are performed by Newmont with Newmont-owned rigs that are maintained by Atlas Copco under a maintenance and repair contract (MARC). The drill rigs are configured in the down-the-hole (DTH) mode, and consist of seven Atlas Copco PV231, three Atlas Copco DML and five Atlas Copco D65 rigs.
Production drilling and blasting is done on 12 m benches with patterns and powder factors varying by material type and geological conditions. Production blasting uses Heavy ANFO blends which is loaded into both production and buffer holes; the stemming length varies according to rock type and other geologic conditions.
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Figure 13-1:    Final Pit Layout Plan
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Note: Figure prepared by Newmont, 2021. WDX = waste rock storage facility expansion.
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13.6    Grade Control
Grade control is conducted using blast hole samples which are assayed for gold, copper and sulfur. Blast holes are mapped for dolerite contacts. These assay samples and dolerite maps are used to develop ore control models for each shot blasted. The shots are modeled using OK and constructed using Vulcan software. A revenue script run to determine the value of each block taking into account gold and copper grade and modifying factors such as mining costs and recovery. The ore control models are blocked out using revenue and Vulcan’s Grade Control Optimizer software. These blocks are subsequently translated using blast movement data prior to marking out the boundaries on the pit floor at which time the shot is released for mining.
Patterns include:
Ore is 5.2 x 5.2 m pattern, using a 13.5 m hole, and one sample is taken per blast hole;
Waste is 5.7 x 5.7 m pattern using a 13.5 m hole, and one sample is taken per blast hole;
13.7    Production Schedule
The LOM production plan is included in Table 13-3 and Table 13-4.
13.8    Equipment
LOM peak equipment requirements are provided in Table 13-5.
13.9    Personnel
The mining personnel total required for LOM operations is about 658.
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Table 13-3:    Production Schedule (2022–2030)
ItemUnitsTotal202220232024202520262027202820292030
Material minedM tonnes987769292939286858363
Ore processedM tonnes558414242424242424242
Table 13-4:    Production Schedule (2031–2035)
ItemUnits20312032203320342035
Material minedM tonnes574228100
Ore processedM tonnes4242424213
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Table 13-5:    Equipment Requirements
PurposeTypePeak Number
Hauling793 conventional expit and re-handle4
793 AHS expit and re-handle36
A009-CAT 785C WC3
785D water cart2
LoadingA012-CAT 966H (WL930)1
A001-Bucyrus 495HD-SH012
A002-Bucyrus RH340-SH042
A002-EX36001
Ancillary Loading Units6
A008- CAT 994H_Wheel Loaders2
SupportA006-CAT Track Dozers6
A006-CAT Wheel Dozers5
A007-CAT Graders4
A011-CAT3302
Road sheeting roller2
785C Float1
A012-CAT 966H (WL13)2
DrillingDML production drill6
PV235 production drill10
Drill water cart WC071
D65 presplit drill6
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14.0    RECOVERY METHODS
14.1    Process Method Selection
The process plant design was based on a combination of metallurgical testwork, previous study designs, previous operating experience. The design is conventional to the gold industry and has no novel parameters.
14.2    Process Plant
A summary process flow sheet is included in Figure 14-1.
14.2.1    Plant Design
The selected process consists of primary crushing, closed circuit secondary and HPGR tertiary crushing, ball milling, and hydrocyclone classification to generate a milled product with a P80 of 150 μm at a slurry density of 35–38% solids.
Flash flotation facilities were included to treat a portion of the mill discharge stream; however, flash flotation trials were unsuccessful and the facilities were removed from the process flowsheet.
Cyclone overflow from the mill circuit is treated in a flotation circuit that produces a copper–gold concentrate for export. Rougher and scavenger flotation concentrates are reground and cleaned to achieve an acceptable final concentrate grade. Concentrate is thickened and filtered before being trucked to the port of Bunbury.
The cleaner–scavenger tailings stream is thickened and leached under elevated cyanide levels. Scavenger tailings are thickened and leached in a conventional leach/adsorption circuit. Leached slurry from the cleaner scavenger tailings leach circuit is delivered to the scavenger tailings circuit for combined recovery of gold.
Leach residue is pumped to the residue disposal area, and residual weakly acid-dissociable cyanide (CNwad) is maintained below a targeted level by a Caro’s acid cyanide destruction plant. This facility can treat the following streams:
Decant water returning to the plant so that cyanide levels do not inhibit flotation;
Decant water recycling to the decant pond to maintain CNwad levels in the pond at an average of 30 ppm and a not-to-exceed level of 50 ppm;
Residue slurry from the plant to protect the decant pond from excursions caused by short-term variability in the copper head grade.
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Figure 14-1:    Process Flowsheet
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Figure prepared by Newmont, 2021.
The carbon from the scavenger tailings adsorption circuit is treated by a conventional split-Anglo American Research Laboratory (AARL) method elution and reactivated in horizontal reactivation kilns. Gold recovery from the eluate is by electrowinning, cathode sludge filtration and drying, and smelting.
Plant utilization in the LOM plan is 88.9% for the secondary/tertiary crushing circuits, and 88.9% for the milling circuit.
14.2.2    Equipment Sizing
The Project process plant incorporates the following major equipment:
2.3 km overland conveyor;
Two ROM stockpiles, two medium-grade stockpiles, three WRSF areas;
Two 60-110 primary crushers;
Six MP1000 secondary crushers;
Four 3.6 m x 8.5 m coarse screens;
Four 5.6 MW HPGR capacity (8,000 t/h);
Four 15 MW ball mills (7.9 m x 13.4 m);
Four flash flotation SK1800 Outotec cells: (decommissioned);
Roughers/scavengers: three parallel trains consisting of 2 x 150 m3 and 6 x 200 m3 Outotec tank cells;
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One 19 m diameter Outotec regrind high-rate thickener;
Regrind mills: two Vtm 1250 950 kW Vertimills;
First cleaners/cleaner scavengers: nine 100 m3 Outotec tank cells;
Coarse cleaners: three 30 m3 Outotec tank cells;
Second and third cleaners: five 8 m3 Outotec U-shape cells;
One 27 m diameter Outotec high-rate concentrate thickener;
One 108 m2 area Larox concentrate pressure filter;
One 19 m diameter Outotec cleaner scavenger tails high- rate thickener;
One 74 m diameter Outotec scavenger tails high-rate thickener;
Two 450 m3 and seven 175 m3 cleaner scavenger tails (CSt) leach tanks;
Carbon-in-leach: two parallel trains (each 12 leach tanks); total 60,500 m3 capacity.
14.3    Power and Consumables
Power supply to the operations is via the local grid system with a coal-fired power station built at Collie providing the additional demand for the operation as well as supplementing the existing grid.
Water supply is from a number of sources, including the Hotham river (during winter only), pit dewatering water, borefield water adjacent to the pits, rainfall run-off and recovered water from the thickeners and TSF. Decreased rainfall during winter could impact the mill production if sufficient water cannot be drawn from the river.
Consumables used in the processing include grinding media, primary collector (thionocarbamate), secondary collector (xanthate), frother, lime, flocculant, cyanide, oxygen, caustic, sulfuric and hydrochloric acid, and peroxide.
14.4    Personnel
The process plant has a personnel count of 423.
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15.0    INFRASTRUCTURE
15.1    Introduction
The majority of the key infrastructure required to support mining operations is constructed and operational. This includes:
Open pit;
Roads;
Two ROM stockpiles, one medium-grade stockpile, two WRSFs;
TSFs;
2.3 km overland conveyor;
Four major water management facilities, including a decant water pond and water recycling facility;
Electrical sub-station;
Concentrate storage shed and load-out facility;
Accommodation village;
Heavy equipment and light vehicle shops, warehouses, and offices;
On-site core storage, and sample pulp storage.
A layout plan is included as Figure 15-1.
A second TSF is required for the LOM plan.
15.2    Roads and Logistics
The Project is accessed by an all-weather road network from Perth as discussed in Chapter 4.
15.3    Waste Rock Storage Facilities
A number of WRSFs are in use, segregated as oxide or rock facilities. Potentially acid-forming waste is encapsulated as required. A WRSF expansion in the 10WD area was completed in 2021 to provide capacity until mid-year 2024. In 2022–2023, areas to the west of the D4 Dam and 11WD will be cleared to provide sufficient capacity for operational requirements for the remaining LOM.
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Figure 15-1:    Infrastructure Layout Plan
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Note: Figure prepared by Newmont, 2019. RDA = residue disposal area (TSF).
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15.4    Stockpiles
Boddington operates two run-of-mine (ROM) stockpiles; ROM and ROM premium (ROMPR) located adjacent to the crusher on the west side of the North Pit. The cut-offs for ROM stockpiles are adjusted quarterly to ensure the preferential feed for the period. The ROMPR cut-off is AU$28/t and ROM varies between is AU$17.06–AU$21.75/t.
Newmont operates a medium-grade stockpile, MG2, which is located to the northwest of the South Pit. Entry to the MG2 stockpile is tested using the stockpile (mineral reserve) cut-off AU$17.06/t.
Stockpiling of ROMPR and ROM cut-off grade ores will be for short periods of time with no recovery degradation effect expected. Stockpiling of MG2 material will allow the material to oxidize for several years prior to processing. Benchmarking of sites with similar mineralogy and climatic conditions led to a baseline assumption that processing of these oxidized stockpile ores will result in a 6% loss in copper recovery and a 3% loss in gold recovery when they are finally processed.
A program for testing the oxidation rates and impact to recovery was developed with Newmont Metallurgical Services and was ongoing since November 2016. A review of the testwork completed to date has recommended that the Boddington Operations continue to apply a 6% deduction to the modelled copper recovery and 3% deduction to the modelled gold recovery to both medium-term stockpiling of high-grade ore and long-term stockpiling of medium-grade ore (Petrucci, 2021).
The combined stockpile is located adjacent to the crusher on the west side of the North Pit And reaches peak capacity in 2027 with 137 Mt.
The stockpiles are reclaimed using a preferential high-grade feed strategy, with the lower medium-grade stockpiles being re-handled to the mill towards the end of the LOM. The stockpiles are reclaimed using conventional mining fleet and loading units.
15.5    Tailings Storage Facilities
The F1/F3 residue disposal area (RDA) is the current active TSF for the Boddington Operations.
The current F1/F3 dam has approved capacity to 600 Mt, which will provide sufficient storage for tailings storage to 2025, assuming remaining capacity of 163 Mt, and an approximate 42 Mt/a process rate. The approved facility has 11 perimeter embankments, of which all are in place.
Newmont plans to expand the facility to 750 Mt, which, assuming the same approximately 42 Mt/a process rate, will provide tailings capacity to 2029. The expansion to 750 Mt is not currently permitted.
Additional storage that will be required for the LOM beyond 2029 is being evaluated by Newmont. This is currently envisaged as a new RDA with a 250 Mt capacity. Newmont has established a pathway and a timeline for the RDA approval and construction such that storage capacity will be available when needed.
The key input parameters dictating the RDA construction quantities and schedule include:
Process plant throughput;
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Annual rate of rise from tailings deposition;
Beach slope angles;
Capacity for dam expansion;
Management of scope within the available construction areas;
Embankment designs and infrastructure to ensure geotechnical factors of safety in line with the Australian National Committee on Large Dams (2019) guidelines.
The TSF is operated as a zero-discharge facility; all water is returned to the process facility for reuse.
The TSF has enhanced monitoring systems including an extensive network of piezometers and inclinometers to track dam performance against the Trigger Action Response Plan, and to support proactive dam safety management.
15.6    Water Management Structures
Water management infrastructure for mine operations include the following:
Pit dewatering infrastructure for pumping away both surface run-off and groundwater from open pits and for monitoring pore pressure distribution, which consists of:
In-pit sump pumping (passive dewatering);
Dewatering-bores (active dewatering);
Grouted multiple vibrating wire piezometer pore pressure monitoring bores;
Mine surface water drainage infrastructure for mitigating risks associated with storm water, sediments, erosions, saturations of ground and ARD (Acid Rock Drainage),in accordance with the water characterization, which consists of:
Fresh water (non-contact water);
Mine water (contact water – no ARD);
Impacted water (contact water – potential ARD).
Where practicable, the drainage infrastructures in the mining area are designed and constructed to segregate each characterized water from others by means of designated open channel network, sub-surface drainage systems, water retaining ponds and water reticulation infrastructures. All surface runoff and waste dump seepage are collected at designated retention ponds and pumped-away to the plant. As required, the drainage system has an ability of discharging a portion of fresh water to the downstream as an environmental flow.
15.7    Water Supply
Process water is supplied direct from the mine pits, from onsite storage reservoirs which were filled in the winter months by pumping from the Hotham River under a license from the Department of Water or from regional water bores which are available all year round. Process water is also sourced as reclamation of water from the decant pond at the TSF.
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Potable water for the camp and mining operation is sourced from two 550 kL water storage tanks.
The site-wide water balance is managed through a GoldSim model, with regular water use, abstraction and storage capacity data regularly fed into the model to obtain reliable forecasts of process and raw water.
15.8    Camps and Accommodation
The current workforce consists of approximately 1,000 employees and 700 contractors with approximately 25% of these residing locally within a 25 km radius of the operations and the balance residing in a purpose-built accommodation village.
15.9    Power and Electrical
Power is sourced from the Bluewater Power Station, a coal-fired power station located 4.5 km northeast of Collie, and approximately 80 km from the mine. Power is transmitted through the State power grid from the power station to the mine site.
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16.0    MARKET STUDIES AND CONTRACTS
16.1    Markets
Newmont has established contracts and buyers for copper concentrate and doré products, and has an internal marketing group that monitors markets for its concentrate and doré products. Together with public documents and analyst forecasts, there is a reasonable basis to assume that for the LOM plan, the copper concentrate and doré will be saleable.
The concentrate produced is marketed as a gold–copper concentrate. Smelters operating their own precious metal refineries at their copper smelting operations are best suited to contract for Boddington concentrates. Long-term contracts are in place with smelters in Korea, Japan, Philippines, and Germany for a large portion of the mine production of copper concentrate. The remaining production is placed on the spot market. The pricing of the concentrate is driven by London Metal Exchange copper pricing, LBMA gold pricing, and annual processing benchmark terms negotiated by major industry players and published by third-party data providers.
Doré is sold on the spot market by in-house marketing experts.
There are no agency relationships relevant to the marketing strategies used.
Product valuation is included in the economic analysis in Chapter 19, and is based on a combination of the metallurgical recovery, commodity pricing, and consideration of processing charges.
16.2    Commodity Price Forecasts
Newmont uses a combination of historical and current contract pricing, contract negotiations, knowledge of its key markets from a long operations production record, short-term versus long-term price forecasts prepared by Newmont’s internal corporate marketing group, public documents, and analyst forecasts when considering long-term commodity price forecasts.
Higher metal prices are used for the mineral resource estimates to ensure the mineral reserves are a sub-set of, and not constrained by, the mineral resources, in accordance with industry-accepted practice.
The long-term commodity price and exchange rate forecasts are:
Mineral reserves:
Gold: US$1,200/oz;
Copper: US$2.75/lb;
US$:AU$: 0.75.
Mineral resources:
Gold: US$1,400/oz;
Copper: US$3.25/lb;
US$:AU$: 0.75.
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16.3    Contracts
Newmont has contracts in place for the majority of the copper concentrate. The terms contained within the concentrate sales contracts are typical and consistent with standard industry practice for high-gold, low-copper concentrates.
The contracts include industry benchmark terms for metal payables, treatment charges and refining charges for concentrates produced. Depending on the specific contract, the terms for the sale of the copper concentrate are either annually negotiated, benchmark-based treatment and refining charges, or a combination of annually-negotiated terms.
Treatment charges assumed for estimation of mineral reserves are based on the forecasts published by third-party data providers such as Wood Mackenzie or CRU. The formula used for mineral reserves is sensitive to the underlying copper price and is consistent with long-term expectations for copper treatment and refining charges.
Newmont’s doré is sold on the spot market, by marketing experts retained in-house by Newmont. The terms contained within the sales contracts are typical and consistent with standard industry practice and are similar to contracts for the supply of doré elsewhere in the world.
The largest in-place contracts other than for product sales cover items such as bulk commodities, operational and technical services, mining and process equipment, and administrative support services. Contracts are negotiated and renewed as needed. Contract terms are typical of similar contracts in Australia that Newmont is familiar with.
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17.0    ENVIRONMENTAL STUDIES, PERMITTING, AND PLANS, NEGOTIATIONS, OR AGREEMENTS WITH LOCAL INDIVIDUALS OR GROUPS
17.1    Introduction
Two phases of gold mining were conducted, from 1987–2001, and from 2009 to date.
17.2    Baseline and Supporting Studies
Baseline and supporting environmental studies were completed to assess both pre-existing and ongoing site environmental conditions, as well as to support decision-making processes during operations start-up and restart. Characterization studies were completed for all environmental media including soil, water, waste, air, noise and closure.
Plans were developed and implemented to address aspects of operations such as waste and fugitive dust management, spill prevention and contingency planning, water management, and noise levels.
17.3    Environmental Considerations/Monitoring Programs
Monitoring and regulatory compliance systems were updated following approval of the current operations in 2015 based on a 2036 LOM footprint. Areas that are monitored include waste rock, TSF, water, air quality, and noise.
There are five species classified as Threatened Species/Matters of National Environmental Significance in the Project area, including three species of black cockatoo (Baudin’s, Carnaby’s and Forest Red-Tailed), and two species of marsupial, woylie and chuditch. All five species have site-specific management plans.
17.4    Closure and Reclamation Considerations
17.4.1    Closure Plans
The 1978 WA Mining Act requires that Newmont submits a closure plan every three years that is compliant with the Guidelines for Preparing Mine Closure Plans (Department of Mines and Petroleum & Environmental Protection Authority, 2015).
The most recent closure plan was submitted in 2019. The closure plan covers rehabilitation of the WRSFs, TSF, processing plant and other areas of disturbance. The open pits will be allowed to develop into pit lakes. The closure strategy for disturbance associated with infrastructure and services is to re-shape disturbance areas to blend in with the surrounding topography and revegetate with local species.
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17.4.2    Closure Costs
The Annual Environmental Report provided to the applicable regulatory agencies of the West Australian government must be accompanied by the disturbance (cleared) area for the mining operations. The disturbance area is used to calculate the annual 1% liability levy under the Mine Rehabilitation Fund that is charged to the site and remains in effect until all tenements were signed off as rehabilitated. In 2021, the levy amounted to approximately AU$1,403 M. Due to the bauxite State Agreements, there is one tenement for which the Mine Rehabilitation Fund does not apply, and a bond, to the value of AU$3.63 M, was lodged.
Newmont also calculates the closure costs for the Boddington Operations as part of internal closure and financial planning. The closure estimate, as at 2021, assuming operations to 2035, is calculated as approximately AU$0.5 B.
17.5    Permitting
All major permits and approvals are either in place or Newmont expects to obtain them in the normal course of business. Additional permitting will be required to support the tailings disposal required in the LOM plan.
Where permits have specific terms, renewal applications are made of the relevant regulatory authority as required, prior to the end of the permit term.
Newmont monitors the regulatory regime in place at each of its operations and ensures that all permits are updated in line with any regulatory changes.
17.6    Social Considerations, Plans, Negotiations and Agreements
The Boddington Operations are located within the Shire of Boddington local government area. Newmont defines the host communities for the Boddington Operations as those within a 50 km radius of the operation. These include the local government areas of Boddington, Williams, and Wandering, and the community of Dwellingup. The Project’s area of influence consists of the following hierarchy that is applied to engagement, employment, procurement and discretionary social investment:
The local government areas and communities;
The Gnaala Karla Booja Native Title Claimant or Indigenous Land Use Agreement area including the regional centers of Kwinana, Armadale, Rockingham, Bunbury, Collie, Narrogin, and Mandurah;
The broader southwest WA region including the greater Perth metropolitan area.
In 2019 and 2020, the Boddington Operations completed the most recent five-yearly Social Impact Assessment and Social Baseline and Economic Contribution Assessment updates, which were supported by perception survey engagement processes. These social knowledge base studies quantify the operations social license, impact, engagement, employment, procurement and discretionary investment aspects and inform LOM Social Management Planning.
Newmont has well-established relationships, engagement forums, and a suite of integrated social impact and opportunity-aligned strategic investment partnerships.
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The operations area is subject to the South West Native Title Settlement. The Preservation of Aboriginal Heritage Agreement formalized in 2007 prescribes the operations Heritage Area of Influence, the Heritage Agreement Project Area and Newmont’s particular heritage responsibilities reflected in the operations Cultural Heritage Management Plan. The Preservation of Aboriginal Heritage Agreement underpins and frames the heritage aspects of the Moorditj Booja Community Partnership Agreement (2006) between Gnaala Karla Booja People, Newmont, and the South West Aboriginal Land and Sea Council. The Preservation of Aboriginal Heritage Agreement ensures that Newmont meets and exceeds the minimum obligations prescribed in the State’s Aboriginal Heritage Act 1972.
The agreement sets out processes for:
Communication and consultation via the Relationship Committee;
Joint management of Aboriginal heritage;
Heritage survey request triggers, methods and team selection procedures;
Heritage survey costs and reporting;
Monitoring of ground disturbance works at specified Aboriginal sites;
Breaches and grievance resolution;
Environmental protection;
Identification and relocation of ancestral remains or objects;
Section 18 Ministerial Consent processes;
Identification, protection and preservation of Aboriginal cultural heritage;
Preservation of Aboriginal sites and objects.
Aboriginal heritage sites identified in surveys are registered with the Aboriginal Heritage Inquiry System managed by the WA Department of Planning, Lands and Heritage. Sites are also mapped into Newmont’s ARC GIS heritage layers, are reflected in the site’s Cultural Heritage Management Plan and inform the operation’s Aboriginal cultural heritage due diligence that is embedded in Newmont’s Disturbance Permitting Processes.
17.7    Qualified Person’s Opinion on Adequacy of Current Plans to Address Issues
Based on the information provided to the QP by Newmont (see Chapter 25), there are no material issues known to the QP. The Boddington Operations are mature mining operations and currently has the social license to operate within its local communities.
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18.0    CAPITAL AND OPERATING COSTS
18.1    Introduction
Capital and operating cost estimates are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
18.2    Capital Cost Estimates
18.2.1    Basis of Estimate
Capital costs are based on recent prices or operating data. Capital costs include funding for infrastructure, pit dewatering, development drilling, and permitting as well as miscellaneous expenditures required to maintain production. Mobile equipment re-build/replacement schedules and fixed asset replacement and refurbishment schedules are included. Sustaining capital costs reflect current price trends.
Newmont applies a time value of money in the development of sustaining capital costs per unit of mass mined. Equipment capital costs can be recovered by using an amortization rate per unit of mass mined so that the net present value of the future cash flow generated from this charge is equal to the equipment capital cost. The capital recovery factor (CRF) is required to give a 5% pre-tax return on an investment over the life of fleet or facility. The CRF for mining and processing is estimated at 110% and 112% respectively. Including the CRF, the mining sustaining capital is AU$0.83/t mined at CRF 1.10, and processing and general and administrative (G&A) sustaining capital is AU$1.95/t milled at CRF 1.12.
18.2.2    Capital Cost Estimate Summary
The overall capital cost estimate for the LOM is AU$1.8 B, as summarized in Table 18-1.
18.3    Operating Cost Estimates
18.3.1    Basis of Estimate
Operating costs are based on actual costs seen during operations and are projected through the LOM plan. Historical costs are used as the basis for operating cost forecasts for supplies and services unless there are new contract terms for these items. Labor and energy costs are based on budgeted rates applied to headcounts and energy consumption estimates.
Table 18-1:    Capital Cost Estimate
AreaUnitValue
MiningAU$ B0.7
ProcessAU$ B1.1
Site G&AAU$ B0*
TotalAU$ B1.8
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Note: numbers have been rounded; totals may not sum due to rounding. * The zero in the table represents numeric data that do not display due to the rounding.
18.3.2    Operating Cost Estimate Summary
Operating costs for the LOM are estimated at AU$11.7 B, as summarized in Table 18-2. The estimated LOM mining cost is AU$4.31/t. Base processing costs are estimated at AU$11.11/t. In addition, G&A costs are estimated at AU$2.25/t.
Table 18-2:    Operating Cost Estimate
AreaUnitValue
MiningAU$ B4.2
ProcessAU$ B6.2
G&AAU$ B1.3
TotalAU$ B11.7
Note: numbers have been rounded; totals may not sum due to rounding.
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19.0    ECONOMIC ANALYSIS
19.1    Methodology Used
The financial model that supports the mineral reserve declaration is a standalone model that calculates annual cash flows based on scheduled ore production, assumed processing recoveries, metal sale prices and AU$/US$ exchange rate, projected operating and capital costs and estimated taxes.
The financial analysis is based on an after-tax discount rate of 5%. All costs and prices are in unescalated “real” dollars. The currency used to document the cash flow is US$.
All costs are based on the 2022 business plan budget. Revenue is calculated from the recoverable metals and long-term metal price and exchange rate forecasts.
19.2    Financial Model Parameters
The economic analysis is based on the metallurgical recovery predictions in Chapter 10.4, the mineral reserve estimates in Chapter 13, the mine plan discussed in Chapter 14, the commodity price forecasts in Chapter 16, closure cost estimates in Chapter 17.4, and the capital and operating costs outlined in Chapter 18. Royalties were summarized in Chapter 3.9.
The Boddington Operations are subject to a federal tax rate of 30% on taxable income.
The economic analysis is based on 100% equity financing and is reported on a 100% project ownership basis. The economic analysis assumes constant prices with no inflationary adjustments.
The NPV5% is US$2.1 B. As the cashflows are based on existing operations where all costs are considered sunk to 1 January 2022, considerations of payback and internal rate of return are not relevant.
A summary of the financial results is provided in Table 19-1. An annualized cashflow statement is provided in Table 19-2 and Table 19-3. In these tables, EBITDA = earnings before interest, taxes, depreciation and amortization. The active mining operation ceases in 2034, and processing ceases in 2035; however, closure costs are estimated to 2055. Closure costs in the period 2034–2055 total 0.2 B.
19.3    Sensitivity Analysis
The sensitivity of the Project to changes in metal prices, exchange rate, sustaining capital costs and operating cost assumptions was tested using a range of 25% above and below the base case values (Figure 19-1).
The Project is most sensitive to metal price changes, less sensitive to changes in operating costs, and least sensitive to changes in capital costs.
The sensitivity to grade mirrors the sensitivity to the gold price and is not shown.
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Table 19-1:    Cashflow Summary Table
ItemUnitValue
Metal prices
GoldUS$/oz1,200
CopperUS$/lb2.75
Mined Ore
TonnageM tonnes558
Gold gradeg/t0.65
Copper grade%0.11%
Gold ouncesMoz11.6
Copper poundsBlb1.3
Capital costsUS$B1.3
Costs applicable to salesUS$B9.7
Discount rate%5
Exchange rateAustralian dollar:United States dollar
(AUD:USD)
0.75
Free cash flowUS$B2.7
Net present valueUS$B2.1
Note: Numbers have been rounded; totals may not sum due to rounding. Table 19-1 contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbor created by such sections and other applicable laws. Please refer to the note regarding forward-looking information at the front of the Report. The cash flow is only intended to demonstrate the financial viability of the Project. Investors are cautioned that the above is based upon certain assumptions which may differ from Newmont’s long-term outlook or actual financial results, including, but not limited to commodity prices, escalation assumptions and other technical inputs. For example, Table 19-1 uses the price assumptions stated in the table, including a gold commodity price assumption of US$1,200/oz, which varies significantly from current gold prices and the assumptions that Newmont uses for its long-term guidance. Please be reminded that significant variation of metal prices, costs and other key assumptions may require modifications to mine plans, models, and prospects.
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Table 19-2:    Annualized Cashflow (2022–2029)
ItemUnitsLOM Total20222023202420252026202720282029
Material minedM tonnes9877692929392868583
Ore processedM tonnes5584142424242424242
Contained gold, processedMoz11.61.11.01.01.01.00.90.90.8
Contained copper, processedMlbs1,2961361381148685878685
Processed ore gold gradeg/t0.650.830.760.750.740.750.670.660.61
Processed ore copper grade%0.110.150.150.120.090.090.090.090.09
Recovered goldMoz9.91.00.90.90.90.90.80.80.7
Recovered copperMlbs1,057114116957068717070
Recovery, gold%858887878687868685
Recovery, copper%828484838281818282
Net revenueUS$ billion14.11.41.31.31.21.21.11.11.0
Costs applicable to salesUS$ billion-9.7-0.8-0.8-0.7-0.7-0.7-0.7-0.8-0.8
Other expensesUS$ billion-0.10.00.00.00.00.00.00.00.0
EBITDAUS$ billion4.20.60.50.50.40.50.40.30.2
Operating cash flow (after estimated taxes and other adjustments)US$ billion4.00.50.40.40.40.30.30.30.3
Total capitalUS$ billion-1.3-0.1-0.1-0.1-0.1-0.1-0.2-0.1-0.1
Free cash flowUS$ billion2.70.40.30.30.30.20.10.10.1
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Table 19-3:    Annualized Cashflow (2030–2036)
ItemUnits2030203120322033203420352036
Material minedM tonnes635742281000
Ore processedM tonnes4242424242130
Contained gold, processedMoz0.80.70.70.80.70.20.0
Contained copper, processedMlbs71929910786240
Processed ore gold gradeg/t0.590.530.530.560.490.42
Processed ore copper grade%0.080.100.110.120.090.080.00
Recovered goldMoz0.70.60.60.60.50.10.0
Recovered copperMlbs5674808768190
Recovery, gold%8483838481790
Recovery, copper%7980818179770
Net revenueUS$ billion0.90.90.90.90.80.20.0
Costs applicable to salesUS$ billion-0.7-0.7-0.8-0.8-0.5-0.20.0
Other expensesUS$ billion0.00.00.00.00.00.00.0
EBITDAUS$ billion0.20.10.10.10.30.10.0
Operating cash flow (after estimated
taxes and other adjustments)
US$ billion0.30.20.20.30.30.10.0
Total capitalUS$ billion-0.1-0.1-0.10.00.00.00.0
Free cash flowUS$ billion0.10.10.10.20.20.10.0
Note: Numbers have been rounded; totals may not sum due to rounding. EBITDA = earnings before interest, taxes, depreciation and amortization. Table 19-2 and Table 19-3 contain “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbor created by such sections and other applicable laws. Please refer to the note regarding forward-looking information at the front of the Report. The cash flow is only intended to demonstrate the financial viability of the Project. Investors are cautioned that the above is based upon certain assumptions which may differ from Newmont’s long-term outlook or actual financial results, including, but not limited to commodity prices, escalation assumptions and other technical inputs. For example, Table 19-2 use the price assumptions stated in the table, including a gold commodity price assumption of US$1,200/oz, which varies significantly from current gold prices and the assumptions that Newmont uses for its long-term guidance. Please be reminded that significant variation of metal prices, costs and other key assumptions may require modifications to mine plans, models, and prospects.
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Figure 19-1:    NPV Sensitivity
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Note: Figure prepared by Newmont, 2021. FCF = free cashflow; op cost = operating cost; cap cost = capital cost; NPV = net present value.
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20.0    ADJACENT PROPERTIES
This Chapter is not relevant to this Report.
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21.0    OTHER RELEVANT DATA AND INFORMATION
This Chapter is not relevant to this Report.
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22.0    INTERPRETATION AND CONCLUSIONS
22.1    Introduction
The QP notes the following interpretations and conclusions, based on the review of data available for this Report.
22.2    Property Setting
The Boddington Operations are located in an area that has more than 40 years of mining activity. As a result, local and regional infrastructure and the supply of goods available to support mining operations is well-established. Personnel with experience in mining-related activities are available in the district. There are excellent transportation routes that access the Boddington area.
There are no significant topographic or physiographic issues that would affect the Boddington Operations. The dominant vegetation type is temperate boreal forest.
Mining operations are conducted year-round.
22.3    Ownership
The current parties to the BGMJV are Newmont Boddington Pty Ltd (66⅔%) and Saddleback Investments Pty Ltd (Saddleback; (33⅓%). Both companies are indirectly-wholly owned Newmont subsidiaries.
22.4    Mineral Tenure, Surface Rights, Water Rights, Royalties and Agreements
Newmont subleases from the Worsley JV the key mining leases upon which the Boddington operations are located, namely M70/21–26, M70/564 and M70/799. Newmont is entitled to all gold and other non-bauxite mining rights conferred by the lease. The Worsley JV retains the rights to bauxite and priority rights of access in order to mine and recover such bauxite.
The relationship between the Worsley JV bauxite operations and the BGMJV gold operations is regulated through a cross-operation agreement. This agreement confers priority on the bauxite operations such that the operations of the Worsley JV will take priority over the operations of the BGMJV and the BGMJV are required to take reasonable measures to conserve bauxite including by mining and stockpiling bauxite on behalf of the Worsley JV.
Newmont has an interest in a total of 89 tenements in the Boddington area The total granted area is approximately 21,249 ha and the under-application area is approximately 60,767 ha.
Mining leases M70/21–26 and M70/799 are the key tenements under which gold mining activity is concentrated.
Through direct lease holding and sub-lease arrangements with the Worsley JV, Newmont holds the rights to minerals other than bauxite in proportion to the Newmont ownership percentages.
Newmont holds sufficient surface rights to execute the LOM plan.
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Process water is supplied direct from the mine pits, from onsite storage reservoirs which were filled in the winter months by pumping from the Hotham River under a license from the Department of Water or from regional water bores which are available all year round. Process water is also sourced as reclamation of water from the decant pond at the TSF.
Production royalties are payable to the WA government and are included in the net smelter return (NSR) cut-off determination. Royalty payments were first incurred in the second half of 2009.
The Boddington Operations have freehold ownership of all the eastern and central areas of operations. The western portion of the operational area is outside the freehold land, and is Crown land covered by native forest. Mining operations can be conducted in this area but with certain restrictions imposed by the State Government through the 1978 Mining Act that are applicable to forested Crown lands. The restrictions have known and manageable requirements.
The Boddington Operations area was previously subject to a land claim registered under the Native Title Act and referred to as the Gnaala Karla Booja Claim. This claim has now been settled.
22.5    Geology and Mineralization
The deposit style is still somewhat controversial. Features consistent with porphyry-style mineralization, classic orogenic shear zones, and intrusion-related gold–copper–bismuth mineralization, are all recognized, giving rise to a variety of genetic interpretations.
The geological understanding of the settings, lithologies, and structural and alteration controls on mineralization in the different zones is sufficient to support estimation of mineral resources and mineral reserves. The geological knowledge of the area is also considered sufficiently acceptable to reliably inform mine planning.
The mineralization style and setting are well understood and can support declaration of mineral resources and mineral reserves.
Newmont continues to actively explore in the Saddleback Greenstone Belt. Geophysics and surface geochemistry datasets are assisting in recognizing new belt-scale lineaments and felsic intrusions, similar to the monzogranite possibly associated with gold mineralization at Boddington, which could host additional Boddington-style mineralization. A number of possible cutbacks were identified adjacent to the current mine plan that may represent upside potential for the operations if these areas can be included in the LOM plan.
22.6    History
The Boddington Operations have over 40 years of active mining history, and exploration activities date back to 1980 when gold was first discovered.
22.7    Exploration, Drilling, and Sampling
The exploration programs completed to date are appropriate for the style of the mineralization within the Boddington Operations area.
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Drilling is normally perpendicular to the strike of the mineralization, but depending on the dip of the drill hole, and the dip of the mineralization, drill intercept widths are typically greater than true widths.
Sampling methods, sample preparation, analysis and security conducted prior to Newmont’s interest in the operations were in accordance with exploration practices and industry standards at the time the information was collected. Current Newmont sampling methods are acceptable for mineral resource and mineral reserve estimation. Sample preparation, analysis and security for the Newmont programs are currently performed in accordance with exploration best practices and industry standards.
The quantity and quality of the lithological, geotechnical, collar and down-hole survey data collected during the exploration and delineation drilling programs are sufficient to support mineral resource and mineral reserve estimation. The collected sample data adequately reflect deposit dimensions, true widths of mineralization, and the style of the deposits. Sampling is representative of the gold and copper grades in the deposit, reflecting areas of higher and lower grades.
Density measurements are considered to provide acceptable density values for use in mineral resource and mineral reserve estimation.
The sample preparation, analysis, quality control, and security procedures used by the Boddington Operations have changed over time to meet evolving industry practices. Practices at the time the information was collected were industry-standard, and frequently were industry-leading practices. The sample preparation, analysis, quality control, and security procedures are sufficient to provide reliable data to support estimation of mineral resources and mineral reserves.
The QA/QC programs adequately address issues of precision, accuracy and contamination. Modern drilling programs typically included blanks, duplicates and standard samples. QA/QC submission rates meet industry-accepted standards.
22.8    Data Verification
Newmont had data collection procedures in place that included several verification steps designed to ensure database integrity. Newmont staff also conducted regular logging, sampling, laboratory and database reviews. In addition to these internal checks, Newmont contracted independent consultants to perform laboratory, database and mine study reviews. The process of active database quality control and internal and external audits generally resulted in quality data.
The data verification programs concluded that the data collected from the Boddington Operations area adequately support the geological interpretations and constitute a database of sufficient quality to support the use of the data in mineral resource and mineral reserve estimation.
Data that were verified on upload to the database are acceptable for use in mineral resource and mineral reserve estimation.
The QP receives and reviews monthly reconciliation reports from the mine site. Through the review of these reconciliation factors the QP is able to ascertain the quality and accuracy of the
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data and its suitability for use in the assumptions underlying the mineral resource and mineral reserve estimates.
22.9    Metallurgical Testwork
Industry-standard studies were performed as part of process development and initial mill design. Subsequent production experience and focused investigations guided mill alterations and process changes. Testwork programs, both internal and external, continue to be performed to support current operations and potential improvements. From time to time, this may lead to requirements to adjust cut-off grades, modify the process flowsheet, or change reagent additions and plant parameters to meet concentrate quality, production, and economic targets.
Samples selected for testing were representative of the various types and styles of mineralization. Samples were selected from a range of depths within the deposit. Sufficient samples were taken so that tests were performed on sufficient sample mass.
Recovery factors estimated are based on appropriate metallurgical testwork, and are appropriate to the mineralization types and the selected process routes. T The forecast LOM gold recovery is 85% and the forecast LOM copper recovery is 82%. These forecasts do not include the application of recovery degradation to long-term stockpiles of medium-grade ore. Gold recovery is discounted by 3% and copper recovery is discounted by 6% to account for recovery degradation in the business plan. These degradation assumptions were verified by an ongoing stockpile oxidation testwork program.
The mill throughput and associated recovery factors are considered appropriate to support mineral resource and mineral reserve estimation, and mine planning.
Since commissioning in 2009, the operation has actively managed the arsenic level in plant feed and, through concentrate blending techniques, controlled the level in copper concentrate shipments to below the penalty rate trigger, hence no penalties were incurred to the Report date.
Alumina remains the largest penalty element present in the copper concentrate, with shipments regularly exposed to a penalty adjustment. However, at 4–5% Al2O3 the levels are not far off the trigger point of 3% in most contracts and a modification to the process was made during Q1 2019 with the introduction of a cleaner–scalper column which reduces the non-sulfide gangue (i.e., Al2O3) in the concentrate and improves the grade of the concentrate as a result.
22.10    Mineral Resource Estimates
Newmont has a set of protocols, internal controls, and guidelines in place to support the mineral resource estimation process, which the estimators must follow.
Estimation was performed by Newmont personnel. All mineralogical information, exploration boreholes and background information were provided to the estimators by the geological staff at the mines or by exploration staff. Modelling was performed in Leapfrog, with resource estimates in Vulcan, Supervisor software and proprietary geostatistics workflows.
Mineral resources are reported using the mineral resource definitions set out in SK1300, and are reported exclusive of those mineral resources converted to mineral reserves. The reference point for the estimate is in situ.
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Factors which may affect the mineral resource estimates include: metal price assumptions; changes to the assumptions used to generate the NSR cut-off; changes to design parameter assumptions that pertain to the conceptual pit shell design that constrain the mineral resources, including changes to geotechnical, mining and metallurgical recovery assumptions, and changes to royalties levied and any other relevant parameters that are included in and impact the NSR cut-off determination; changes in interpretations of mineralization geometry and continuity of mineralization zones; changes to the dilution skin percentages used for large dolerite dykes; and assumptions as to the continued ability to access the site, retain mineral and surface rights titles, maintain the operation within environmental and other regulatory permits, and retain the social license to operate.
22.11    Mineral Reserve Estimates
Mineral reserves were converted from measured and indicated mineral resources. Inferred mineral resources were set to waste. Estimation was performed by Newmont personnel.
All current mineral reserves will be exploited using open pit mining methods or are in stockpiles. The mine plan is based on a 42 Mt/a mill throughput rate. Pit designs are full crest and toe detailed designs with final ramps based on the selected optimum Whittle cones. Pit designs honor geotechnical guidelines. The mine schedule was developed at an NSR cut-off of AU$15.32/t, incorporating the processing cost, metallurgical recovery, incremental ore mining costs, process sustaining capital and tailings dam-related rehabilitation costs.
The block models were constructed to include the expected dilution based on mining methods, bench height and other factors. The current mine and process reconciliation appears to support this assumption.
The mill processes higher-grade ores delivered from the mine at an elevated cut-off. The ore between the elevated cut-off and the marginal cut-off is stockpiled for later processing at the end of the mine life.
Stockpile estimates were based on mine dispatch data; the grade comes from closely-spaced blasthole sampling and tonnages were sourced from truck factors.
Mineral reserves are reported using the mineral reserve definitions set out in SK1300. The reference point for the estimate is the point of delivery to the process plant.
Areas of uncertainty that may materially impact the mineral reserve estimates include: changes to long-term metal price and exchange rate assumptions; changes to metallurgical recovery assumptions; changes to the input assumptions used to derive the pit designs applicable to the open pit mining methods used to constrain the estimates; changes to the forecast dilution and mining recovery assumptions; changes to the cut-off values applied to the estimates; variations in geotechnical (including seismicity), hydrogeological and mining method assumptions; and changes to environmental, permitting and social license assumptions.
22.12    Mining Methods
Mineral reserves were estimated assuming open pit mining, and the use of conventional Owner-operated equipment.
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Open pit designs were assessed and reviewed prior to pit excavation to ensure adequacy and integrity of design geometry with consideration to ground conditions. A continuous system of assessment was implemented and is adhered to during ongoing excavation processes in order to document and verify geological conditions as they were encountered.
The pit dewatering system will continuously receive large volumes of groundwater and surface run-off over the LOM. The long-term dewatering strategy assumes that this trend continues throughout the LOM. The LOM pit dewatering plan will strategically upgrade the in-pit sump pump system (passive dewatering) and dewatering-bores (active dewatering) to cope with operational needs as required.
The LOM plan currently envisages mining at an average rate of approximately 80 Mt/a for 14 years, peaking at 93 Mt/a in 2035, with a maximum rate of advance by pit stage of seven benches per annum and an average of five benches (60 m) per year. The mine life will extend to 2034 with material mined from the open pit. Milling will cease in 2035 after treatment of stockpiled ore.
As part of day-to-day operations, Newmont will continue to perform reviews of the mine plan and consider alternatives to, and variations within, the plan. Alternative scenarios and reviews may be based on ongoing or future mining considerations, evaluation of different potential input factors and assumptions, and corporate directives.
22.13    Recovery Methods
The process plant design was based on a combination of metallurgical testwork, previous study designs, previous operating experience. The design is conventional to the gold industry and has no novel parameters.
The plant will produce variations in recovery due to the day-to-day changes in ore type or combinations of ore type being processed. These variations are expected to trend to the forecast recovery value for monthly or longer reporting periods.
22.14    Infrastructure
The majority of the key infrastructure to support the mining activities envisaged in the LOM is in place. A second TSF will be required for the LOM plan. Within Newmont’s ground holdings, there is sufficient area to allow construction of any additional infrastructure that may be required in the future.
Personnel live either surrounding settlements or stay at the accommodation village.
A number of WRSFs are in use, segregated as oxide or rock facilities. Potentially acid-forming waste is encapsulated as required.
Stockpiles are reclaimed using a preferential high-grade feed strategy, with the lower medium-grade stockpiles being re-handled to the mill towards the end of the LOM. The stockpiles are reclaimed using conventional mining fleet and loading units.
The F1/F3 residue disposal area (RDA) is the current active TSF for the Boddington Operations.
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The current F1/F3 dam has approved capacity to 600 Mt which is sufficient storage for the life of mine reserves to 2025, assuming remaining capacity of 163 Mt, and a 40 Mt/a process rate. The approved facility has 11 perimeter embankments, of which all are in place.
Newmont plans to expand the facility to 750 Mt, which, assuming the same 40 Mt/a process rate, will provide tailings capacity to 2029. The expansion to 750 Mt is not currently permitted. There is sufficient time for Newmont to obtain approval for the TSF expansion prior to 2025, when it is required.
Additional storage that will be required for the LOM beyond 2029 is being evaluated by Newmont. This is currently envisaged as a new RDA with a 250 Mt capacity. Newmont has established a pathway and a timeline for the RDA approval and construction such that storage capacity will be available when needed. There is sufficient time for Newmont to obtain approval for the second RDA prior to 2029, when it is required.
The TSF is operated as a zero-discharge facility; all water is returned to the process facility for reuse.
Process water is supplied direct from the mine pits, from onsite storage reservoirs which were filled in the winter months by pumping from the Hotham River under a license from the Department of Water or from regional water bores which are available year-round. Process water is also sourced as reclamation of water from the decant pond at the TSF.
Power is sourced from the Bluewater Power Station, and transmitted through the State power grid from the power station to the mine site.
22.15    Market Studies
Newmont has an internal marketing department that is tasked with monitoring global commodities markets, including the products from the Boddington Operations. The operations produce a gold–copper concentrate. Newmont has contracts in place for the majority of the copper concentrate. The terms contained within the concentrate sales contracts are typical and consistent with standard industry practice for high-gold, low-copper concentrates. The contracts include industry benchmark terms for metal payables, treatment charges and refining charges for concentrates produced. Depending on the specific contract, the terms for the sale of the copper concentrate are either annually negotiated, benchmark-based treatment and refining charges, or a combination of annually-negotiated terms.
Newmont’s bullion is sold on the spot market, by marketing experts retained in-house by Newmont. The terms contained within the sales contracts are typical and consistent with standard industry practice and are similar to contracts for the supply of doré elsewhere in the world.
The largest in-place contracts other than for product sales cover items such as bulk commodities, operational and technical services, mining and process equipment, and administrative support services. Contracts are negotiated and renewed as needed. Contract terms are typical of similar contracts in Australia that Newmont is familiar with.
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22.16    Environmental, Permitting and Social Considerations
Baseline and supporting environmental studies were completed to assess both pre-existing and ongoing site environmental conditions, as well as to support decision-making processes during operations start-up and restart. Characterization studies were completed for all environmental media including soil, water, waste, air, noise and closure. Plans were developed and implemented to address aspects of operations such as waste and fugitive dust management, spill prevention and contingency planning, water management, and noise levels.
There are five species classified as Threatened Species/Matters of National Environmental Significance in the Project area. All five species have site-specific management plans.
The most recent closure plan was submitted in 2019. The closure estimate, as at 2021, assuming operations to 2036, is calculated as approximately AU$0.5 B.
All major permits and approvals are either in place or Newmont expects to obtain them in the normal course of business. Additional permitting will be required to support the tailings disposal required in the LOM plan. Where permits have specific terms, renewal applications are made of the relevant regulatory authority as required, prior to the end of the permit term.
The operations area is subject to the South West Native Title Settlement.
Newmont has well-established relationships, engagement forums, and a suite of integrated social impact and opportunity-aligned strategic investment partnerships.
22.17    Capital Cost Estimates
Capital costs were based on recent prices or operating data and are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Capital costs included funding for infrastructure, pit dewatering, development drilling, and permitting as well as miscellaneous expenditures required to maintain production. Mobile equipment re-build/replacement schedules and fixed asset replacement and refurbishment schedules were included. Sustaining capital costs reflected current price trends.
The overall capital cost estimate for the LOM is AU$1.8 B.
22.18    Operating Cost Estimates
Operating costs were based on actual costs seen during operations and are projected through the LOM plan, and are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Historical costs were used as the basis for operating cost forecasts for supplies and services unless there are new contract terms for these items. Labor and energy costs were based on budgeted rates applied to headcounts and energy consumption estimates.
The operating cost estimate for the LOM is AU$11.7 B.
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22.19    Economic Analysis
The NPV5% is US$2.1 B. As the cashflows are based on existing operations where all costs are considered sunk to 1 January 2022, considerations of payback and internal rate of return are not relevant.
22.20    Risks and Opportunities
Factors that may affect the mineral resource and mineral reserve estimates were identified in Chapter 11.13 and Chapter 12.9 respectively.
22.20.1    Risks
The risks associated with the Boddington site are generally those expected with a large surface mining operation and include the accuracy of the resource model, unexpected geological features that cause geotechnical issues, dewatering difficulties and/or operational impacts.
Other risks noted include:
Commodity price increases for key consumables such diesel, electricity, tires and chemicals would negatively impact the stated mineral reserves and mineral resources;
Labor cost increases or productivity decreases could also impact the stated mineral reserves and mineral resources, or impact the economic analysis that supports the mineral reserves;
While the autonomous haulage system is currently operational any unforeseen issues with this innovative system could increase costs and/or lower expected productivities;
With bauxite mining having precedence over other minerals there is a risk that any unexpected requirement to advance bauxite mining (or delay gold mining) could increase costs and/or delay the expected production profile;
Geotechnical and hydrological assumptions used in mine planning are based on historical performance, and to date historical performance has been a reasonable predictor of current conditions. Any changes to the geotechnical and hydrological assumptions could affect mine planning, affect capital cost estimates if any major rehabilitation is required due to a geotechnical or hydrological event, affect operating costs due to mitigation measures that may need to be imposed, and impact the economic analysis that supports the mineral reserve estimates;
The mine plan assumes that the existing TSF can be expanded from 600 Mt to 750 Mt. While there is sufficient time for the permitting process prior to the expansion being required in 2025, if there is a delay in the permitting process or the facility cannot be expanded, this could impact the mine plan, the mineral reserve estimates and the economic analysis that supports the mineral reserve estimates;
The mine plan assumes that a second RDA can be constructed and permitted. Newmont has established a pathway and a timeline to develop additional tailings capacity such that storage capacity will be available when needed. However, if there are changes to the assumed pathway, to the ability to construct and permit such a facility, or to the timeline
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assumptions, this could impact the mine plan, the mineral reserve estimates and the economic analysis that supports the mineral reserve estimates;
The mineral reserve estimates are very sensitive to metal prices. Lower metal prices than forecast in the LOM plan may require revisions to the mine plan, with impacts to the mineral reserve estimates and the economic analysis that supports the mineral reserve estimates;
There are five species classified as Threatened Species/Matters of National Environmental Significance in the Project area. Although there are site-specific management plans in place, if there is a major impact seen on the populations from mining activities, the environmental permits for the operations could be revised or even revoked. The social license to operate could also be impacted;
Climate changes could impact operating costs and ability to operate;
There is a risk to the Boddington Operations overall if the Worsley JV were to fail to renew the mining leases, as Newmont’s interest relies on the existence of valid mining tenure.
22.20.2    Opportunities
Opportunities for the Boddington mine include moving the stated mineral resources into mineral reserves through additional drilling and study work. The mineral reserves and mineral resources are based on conservative price estimates for gold and copper so upside exists, either in terms of the potential to estimate additional mineral reserves and mineral resources or improved economics should the prices used for gold and copper be increased.
Opportunities include:
Conversion of some or all of the measured and indicated mineral resources currently reported exclusive of mineral reserves to mineral reserves, with appropriate supporting studies;
Upgrade of some or all of the inferred mineral resources to higher-confidence categories, such that such better-confidence material could be used in mineral reserve estimation;
Higher metal prices than forecast could present upside sales opportunities and potentially an increase in predicted Project economics;
Potential to link the north and south pits through the saddle area to form a single large open pit through mining and economic studies.
22.21    Conclusions
Under the assumptions presented in this Report, the Boddington Operations have a positive cash flow, and mineral reserve estimates can be supported.
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23.0    RECOMMENDATIONS
As Boddington is an operating mine, the QP has no material recommendations to make.
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24.0    REFERENCES
24.1    Bibliography
Allibone, A.H., Windh, J., Etheridge, M.A., Burton, D., Anderson, G., Edwards, P., Miller, A., Graves, C., Fanning, C.M., and Wysoczanski, R., 1998: Timing Relationships and Structural Controls on the Location of Au–Cu Mineralization at the Boddington Gold Mine, Western Australia: Economic Geology, 93, pp. 245–270.
AMMTEC, 1989: Assessment of Australian Assay Laboratories Boddington Facility: unpublished internal report by AMMTEC to Boddington Gold Mine.
ANCOLD, 2019: Guidelines on Tailings Dams – Planning, Design, Construction, Operation and Closure: July 2019, Revision 1.
AngloGold Ashanti Australia, 2001: AngloGold Inputs for 1999 Wandoo Resource Assessment and the Derivation of a Factor for the Economic Model: unpublished internal report by AngloGold Ashanti Australia to NBGJV, October 2001.
AngloGold Ashanti Australia, 2003: Boddington Joint Venture, 2003 AngloGold–BGM Collaborative Study — Boddington Gold Mine Exploration Data Review and Target Generation: unpublished internal report NBGJV, December 2003.
AngloGold Ashanti Australia, 2004a: Boddington – Drill Hole Bias Examination: unpublished internal report by AngloGold Ashanti Australia to NBGJV, February 2004.
AngloGold Ashanti Australia, 2004b: Boddington Basement Pits Grade Control Information Examination: unpublished internal report by AngloGold Ashanti Australia to NBGJV, March 2004.
AngloGold Ashanti Australia, 2004c: Boddington Geology and Domain Review: unpublished internal report by AngloGold Ashanti Australia to NBGJV, June 2004.
Augenstein, C. et.al. 2012: Boddington Geological Campaign 2012: unpublished internal report by Jigsaw Geoscience to NBG, November 2012.
Barley M.E., Groves D.I. and Blake T.S., 1992: Archaean metal deposits related to tectonics: evidence from Western Australia, Perth, Western Australia: Geology Department and University Extension, University of Western Australia Publication 22, p. 307–324.
Boddington Gold Mining Company, 2003: Review of AGAA Estimation Domains: internal NBGJV report, October 2003.
Boddington Gold Mining Company, 2004a: FSU Local Resource Estimate Quality, Mining Dilution and Recovery Review: internal NBGJV report, January 2004.
Boddington Gold Mining Company, 2004b: Recommended Configuration of the FSU Phase 3 Local Resource Estimate: internal NBGJV report, December 2004.
Douglas, I., 2004: Boddington Drill Hole Bias Investigations: internal memorandum from Newmont Gold Corp. to NBGJV, 4 April, 2004.
Fluor Australia Pty Ltd, 2000: Boddington Expansion Feasibility Study Update: internal report by Fluor Australia Pty Ltd to Boddington Gold Mine, Volume 1 (Executive Summary), Volume 2 (Geology and Resource), Volume 3 (Mining) and Volume 4 (Process).
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Gleeson, K., Tangney, G., Behn, M., and Hutchin, S., 1999: Boddington Gold Mine — Wandoo Project, Wandoo South and North Geology Report, Volume 1: internal report by Boddington Gold Mine.
Golder Associates, 2002: Report on Geological Modeling and Recoverable Resource Estimation of the Wandoo Deposit: internal report by Golder Associates to NBGJV, May 2002.
Golder Associates, 2002: Review of the Effects of Potential Check Assay Biases: unpublished internal report by Golder Associates to NBGJV, May 2002.
Golder Associates, 2003: Report on 2003 Multiple Indicator Kriging Resource Estimate of the Wandoo Deposit, Boddington Gold Mine: internal report by Golder Associates to NBGJV, May 2003.
Golder Associates, 2004a: Kriging Neighborhood Analysis and Re-estimation of the Boddington Gold Mine Expansion Resource Model: internal report by Golder Associates to NBGJV, April 2004.
Golder Associates, 2004b: Review of Acid Rock Drainage Studies for the Boddington Expansion Project: internal report by Golder Associates to NBGJV, April 2004.
Golder Associates, 2005a: Local Resource Estimates for the Boddington Gold Mine Expansion: internal report by Golder Associates to NBGJV, February 2005.
Golder Associates, 2005b: Global Resource Simulation Study for the Boddington Gold Mine Expansion: internal report by Golder Associates to NBGJV, June 2005.
Golder Associates, 2005c: BGME Probability-Based Resource Classification Using Simulations: internal report by Golder Associates to NBGJV, September 2005.
Golder Associates, 2017a: Technical Review of Mineral Resources and Mineral Reserves: internal report by Golder Associates to NBG, May 2017.
Golder Associates, 2017b: Newmont Boddington 2017 Preliminary Ore Reserve: internal report by Golder Associates to NBG, November 2017.
Golder Associates, 2018: Technical Review of 2017 Mineral Resource Update: internal report by Golder Associates to NBG, January 2018.
Kenny, K., Tangney, G., and Rowell, A., 2002: Boddington Expansion Project Wandoo Mineral Resource: internal report by AngloGold Ashanti Australia to NBGJV.
Kirkham, R.V., 1972: Porphyry Deposits: in Blackadar, R.G., ed., Report of Activities Part B, November 1971 to March 1972: Geological Survey of Canada, Paper 72-1b, pp. 62–64.
Knight Piesold Consulting, 2016: F1/F3 Residue Disposal Area 2015 RDA Cone Penetration Testing: internal report by Knight Piesold Consulting to NBG, February 2016
Libby, W.G. and DeLaeter, J.R., 1998: Biotite Rb-Sr Age Evidence for Early Palaeozoic Tectonism and the Cratonic Margin in Southwestern Australia: Australian Journal of Earth Sciences, vol 45, pp. 623–632.
Masters, S., 2008: Audit of the BGM 2007 Resource Model, Boddington Mine, WA: internal report byCS-2 Pty Ltd to NBGJV, September 2008.
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McCuaig, T., and Behn, M., 2001: Boddington Gold Mine: Nature of the Mineralisation in the Wandoo North Basement Resource and Refinements to the Model for Genesis of Mineralisation at Wandoo: internal report by SRK Consulting to NBGJV.
McCuaig, T.C, Behn, M.T., Stein, H., Hagemann, S.G., McNaughton, N., Cassidy, K,F., Champion, D., and Wyborn, L., 2002: The Boddington Gold Mine: a new style of Archaean Au–Cu deposit: in WA Gold Giants, MSc Short Course Notes, Centre for Global Metallogeny, University of WA, pp. 61–64.
Miller, A., Behn, M., and Gleeson K., 1996: Wandoo Prospect Geological Report, Volume 1: internal report by Boddington Gold Mine.
Newmont Mining Corporation, 2014b: Geotechnical Study for Hard Rock Slope Design at Newmont Boddington Gold, 20130328-GT-PROJ-AT- Hard Rock Study Report Final, March 2014.
Newmont Mining Corporation, 2016: 75Deg Steepening Trails: internal report, GT-GM060-20161026-AGJ-FINAL, October 2016.
Newmont Mining Ltd. 2004a: NML Review of Boddington Project Resource: internal report by Newmont Mining Ltd to NBGJV, January 2004.
Newmont Mining Ltd, 2004b: Boddington Drill Hole Bias Investigations: internal report by Newmont to NBGJV, April 2004.
Peattie R., 2004: Boddington Drillhole Bias Examination: internal memorandum from AngloGold Ashanti to NBGJV, 19 February 2004.
Petrucci, P., 2014: Metallurgical Performance Model Update 2014, Newmont Boddington Gold: internal report by Boddington Gold Mine.
Petrucci, P., 2015: 2015 Gold Recovery Function Update, Newmont Boddington Gold: internal report by Boddington Gold Mine.
Petrucci, P., 2021: Impact of Stockpile Oxidation on Recovery at NBG: Newmont Boddington Gold, unpublished internal report by Boddington Gold Mine.
Quantitative Geoscience, 2003: Audit of the 2003 Boddington Resource Estimate: unpublished internal report by Quantitative Geoscience to NBGJV, October 2003.
Ravenscroft, P., 2007: Review of Gold Resource Modeling Methodology, Boddington Mine, WA: internal report by CS-2 Pty Ltd to NBGJV, August 2007.
Roberts, M., 2012: Metallurgical Performance Models, Newmont Boddington Gold: internal report by Boddington Gold Mine.
Rossi, M., 2009: 2009 UC Resource Model Independent Audit Report, Boddington Gold Mine: internal report by GeoSystems International Inc to NBG, September 2009.
Roth, E., 1992: The Nature and Genesis of Archaean Porphyry-Style Cu–Au–Mo Mineralisation at the Boddington Gold Mine, Western Australia: Ph.D. thesis, University of Western Australia.
Runge, K.,2012: Evaluation of Recovery Function Predictions – February 2012: internal report by Metso Process Technology & Innovation to NBG
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Sillitoe, R. H., 2000: Gold-Rich Porphyry Deposits: Descriptive and Genetic Models and their Role in Exploration and Discover: in Gold in 2000, Reviews in Economic Geology, Vol. 13, Society of Economic Geologists.
Sinclair, W.D., 2006: Consolidation and Synthesis of Mineral Deposits Knowledge - Porphyry Deposits: report posted to Natural Resources Canada website 30 January 2006, 14 http://gsc.nrcan.gc.ca/mindep/synth_dep/porph/index_e.php>.
Snowden Consulting, 2012: 2235: Geotechnical Assessment of Fresh Rock Pit Cut-back: April 2012.
SRK Consulting, 2005: Deleterious Elements Modeling: internal report by SRK Consulting to NBGJV, May 2005.
SRK Consulting, 2012. NEM008: Boddington Gold Mine: Geotechnical Study for Final Saprolite Slopes: February 2012.
Stein, H.J., Markey, R.J., Morgan, J.W., Selby, D., Creaser, R.A., McCuaig, T.C., and Behn M., 2001: Re-Os Dating of Boddington Molybdenite, SW Yilgarn: Two Au Mineralization Events: report posted to University of Alberta website.
Stoker, P., 2000: Audit Boddington Expansion QA/QC: internal report to NBGJV, September 2000.
Stoker, P., 2001: Review of Additional QA/QC Data, Boddington Expansion: internal report to NBGJV, February 2001.
Stoker, P., 2002: Review of BGM QA/QC Assay Data, Boddington Expansion: internal report to NBGJV, January 2002.
Surman, J., 1999: Boddington Gold Mine Audit of data used in preparation for the Wandoo Bedrock Resource Estimation: internal report by Snowden Mining Industry Consultants to Boddington Gold Mine.
Symons, P.M., Anderson, G., Beard, T.J., Hamilton, L.M., Reynolds, G.D., Robinson, J.M., Staley, R.W., and Thompson, C.M., 1990: Boddington Gold Deposit: in Geology of the Mineral Deposits of Australia and Papua New Guinea, ed. F. E. Hughes, Australasian Institute of Mining and Metallurgy Monograph 14, Volume 1, pp. 165–169.
Tangney, G., 2000: Boddington Gold Mine Basement Gold Assay Quality Control: internal memorandum by Boddington Gold Mine.
Wilde, S. A., 1976: The Saddleback Group – A Newly-Discovered Archaean Greenstone Belt in the Southwestern Yilgarn Block: Western Australian Geological Survey Annual Report 1975, pp. 92–95.
24.2    Abbreviations and Symbols
Abbreviation/SymbolTerm
AALAustralian Assay Laboratories
AARLAnglo American Research Laboratory
AASAtomic Absorption Spectrometry
AlcoaAlcoa of Australia Ltd.
AmdelAmdel Laboratory
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Abbreviation/SymbolTerm
ARDacid rock drainage
AU$Australian dollar
BGJVBoddington Gold Joint Venture
BGMJVBoddington Gold Mine Joint Venture
BHPBHP Minerals Ltd.
CIMCanadian Institute of Mining, Metallurgy and Petroleum
CNwadweak acid-dissociable cyanide
CRFcapital recovery factor
CSTcleaner scavenger tailings
DGPSdigital global positioning system
G&Ageneral and administrative
GenalysisGenalysis Laboratory
GPSglobal positioning system
HPGRhigh pressure grinding rolls
ICP-AESinductively-coupled plasma atomic emission spectroscopy
ICP-MSinductively coupled plasma–mass spectrometry
ICP-OESinductively coupled plasma-optical emission spectroscopy
JORCJoint Ore Reserve Committee
LOMlife-of-mine
MMImobile metal ion
MPa
NAPPnet acid-producing potential
NBGNewmont Boddington Gold
NBGJVNewmont Boddington Gold Joint Venture
NewmontNewmont Corporation; formerly Newmont Mining Corporation
NSRnet smelter return
OKordinary kriging
QA/QCQuality assurance and quality control
QPQualified Person
RABrotary air blast
RCreverse circulation
RDAresidue disposal area
ReynoldsReynolds Australia Alumina Ltd.
RLRelative level
ROMrun-of-mine
RQDrock quality description
SAGsemi-autogenous grind
SGSpecific gravity
ShellThe Shell Company of Australia Ltd.
SMESociety for Mining, Metallurgy and Exploration
SMUselective mining unit
TSFtailing storage facility
UltraTraceUltraTrace Geoanalytical Laboratories
USUnited States
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Abbreviation/SymbolTerm
WAWestern Australia
WA Heritage ActAboriginal Heritage Act 1972 (WA)
WorsleyWorsley Alumina Pty Ltd
Worsley JVWorsley Alumina Joint Venture
24.3    Glossary of Terms
TermDefinition
acid rock drainage/acid mine drainageCharacterized by low pH, high sulfate, and high iron and other metal species.
amphibolite facies
one of the major divisions of the mineral-facies classification of metamorphic rocks, the rocks of which formed under conditions of moderate to high temperatures (500° C, or about 950° F, maximum) and pressures. Amphibole, diopside, epidote, plagioclase, almandine and grossular garnet, and wollastonite are minerals typically found in rocks of the amphibolite facies
ANFOA free-running explosive used in mine blasting made of 94% prilled aluminum nitrate and 6% No. 3 fuel oil.
ball millA piece of milling equipment used to grind ore into small particles. It is a cylindrical shaped steel container filled with steel balls into which crushed ore is fed. The ball mill is rotated causing the balls themselves to cascade, which in turn grinds the ore.
bullionUnrefined gold and/or silver mixtures that have been melted and cast into a bar or ingot.
Caro’s acid
A reagent (H2SO5)generated through the combination of hydrogen peroxide and sulfuric acid, used in cyanide destruction and detoxification.
comminution/crushing/grindingCrushing and/or grinding of ore by impact and abrasion. Usually, the word "crushing" is used for dry methods and "grinding" for wet methods. Also, "crushing" usually denotes reducing the size of coarse rock while "grinding" usually refers to the reduction of the fine sizes.
concentrateThe concentrate is the valuable product from mineral processing, as opposed to the tailing, which contains the waste minerals. The concentrate represents a smaller volume than the original ore
cut-off gradeA grade level below which the material is not “ore” and considered to be uneconomical to mine and process. The minimum grade of ore used to establish reserves.
cyanidationA method of extracting gold or silver by dissolving it in a weak solution of sodium cyanide.
data verificationThe process of confirming that data has been generated with proper procedures, has been accurately transcribed from the original source and is suitable to be used for mineral resource and mineral reserve estimation
declineA sloping underground opening for machine access from level to level or from the surface. Also called a ramp.
densityThe mass per unit volume of a substance, commonly expressed in grams/ cubic centimeter.
developmentOften refers to the construction of a new mine or; Is the underground work carried out for the purpose of reaching and opening up a mineral deposit. It includes shaft sinking, cross-cutting, drifting and raising.
dilutionWaste of low-grade rock which is unavoidably removed along with the ore in the mining process.
easement
Areas of land owned by the property owner, but in which other parties, such as utility companies, may have limited rights granted for a specific purpose.
electrowinning.The removal of precious metals from solution by the passage of current through an electrowinning cell. A direct current supply is connected to the anode and cathode. As current passes through the cell, metal is deposited on the cathode. When sufficient metal has been deposited on the cathode, it is removed from the cell and the sludge rinsed off the plate and dried for further treatment.
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TermDefinition
elutionRecovery of the gold from the activated carbon into solution before zinc precipitation or electro-winning.
EMGeophysical method, electromagnetic system, measures the earth's response to electromagnetic signals transmitted by an induction coil
encumbrance
An interest or partial right in real property which diminished the value of ownership, but does not prevent the transfer of ownership. Mortgages, taxes and judgements are encumbrances known as liens. Restrictions, easements, and reservations are also encumbrances, although not liens.
feasibility study
A feasibility study is a comprehensive technical and economic study of the selected development option for a mineral project, which includes detailed assessments of all applicable modifying factors, as defined by this section, together with any other relevant operational factors, and detailed financial analysis that are necessary to demonstrate, at the time of reporting, that extraction is economically viable. The results of the study may serve as the basis for a final decision by a proponent or financial institution to proceed with, or finance, the development of the project.
A feasibility study is more comprehensive, and with a higher degree of accuracy, than a pre-feasibility study. It must contain mining, infrastructure, and process designs completed with sufficient rigor to serve as the basis for an investment decision or to support project financing.
flotationSeparation of minerals based on the interfacial chemistry of the mineral particles in solution. Reagents are added to the ore slurry to render the surface of selected minerals hydrophobic. Air bubbles are introduced to which the hydrophobic minerals attach. The selected minerals are levitated to the top of the flotation machine by their attachment to the bubbles and into a froth product, called the "flotation concentrate." If this froth carries more than one mineral as a designated main constituent, it is called a "bulk float". If it is selective to one constituent of the ore, where more than one will be floated, it is a "differential" float.
flowsheetThe sequence of operations, step by step, by which ore is treated in a milling, concentration, or smelting process.
frotherA type of flotation reagent which, when dissolved in water, imparts to it the ability to form a stable froth
gangueThe fraction of ore rejected as tailing in a separating process. It is usually the valueless portion, but may have some secondary commercial use
greenschist facies
one of the major divisions of the mineral facies classification of metamorphic rocks, the rocks of which formed under the lowest temperature and pressure conditions usually produced by regional metamorphism. Temperatures between 300 and 450 °C (570 and 840 °F) and pressures of 1 to 4 kilobars are typical. The more common minerals found in such rocks include quartz, orthoclase, muscovite, chlorite, serpentine, talc, and epidote
high pressure grinding rolls (HPGR)A type of crushing machine consisting of two large studded rolls that rotate inwards and apply a high pressure compressive force to break rocks.
indicated mineral resourceAn indicated mineral resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of adequate geological evidence and sampling. The term adequate geological evidence means evidence that is sufficient to establish geological and grade or quality continuity with reasonable certainty. The level of geological certainty associated with an indicated mineral resource is sufficient to allow a qualified person to apply modifying factors in sufficient detail to support mine planning and evaluation of the economic viability of the deposit.
inferred mineral resource
An inferred mineral resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of limited geological evidence and sampling. The term limited geological evidence means evidence that is only sufficient to establish that geological and grade or quality continuity is more likely than not. The level of geological uncertainty associated with an inferred mineral resource is too high to apply relevant technical and economic factors likely to influence the prospects of economic extraction in a manner useful for evaluation of economic viability.
A qualified person must have a reasonable expectation that the majority of inferred mineral resources could be upgraded to indicated or measured mineral resources with continued exploration; and should be able to defend the basis of this expectation before his or her peers.
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TermDefinition
initial assessmentAn initial assessment is a preliminary technical and economic study of the economic potential of all or parts of mineralization to support the disclosure of mineral resources. The initial assessment must be prepared by a qualified person and must include appropriate assessments of reasonably assumed technical and economic factors, together with any other relevant operational factors, that are necessary to demonstrate at the time of reporting that there are reasonable prospects for economic extraction. An initial assessment is required for disclosure of mineral resources but cannot be used as the basis for disclosure of mineral reserves
internal rate of return (IRR)The rate of return at which the Net Present Value of a project is zero; the rate at which the present value of cash inflows is equal to the present value of the cash outflows.
IPGeophysical method, induced polarization; used to directly detect scattered primary sulfide mineralization. Most metal sulfides produce IP effects, e.g., chalcopyrite, bornite, chalcocite, pyrite, pyrrhotite
JORC codeThe Australasian Code for Reporting of Mineral Resources and Ore Reserves prepared by the Joint Ore Reserves Committee of the Australasian Institute of Mining and Metallurgy, Australian Institute of Geoscientists and Mineral Council of Australia, as amended. Provides minimum standards for public reporting to ensure that investors and their advisers have all the information they would reasonably require for forming a reliable opinion on the results and estimates being reported. Adopted by the ASX for reporting ore body size and mineral concentrations.
life of mine (LOM)Number of years that the operation is planning to mine and treat ore, and is taken from the current mine plan based on the current evaluation of ore reserves.
lithogeochemistryThe chemistry of rocks within the lithosphere, such as rock, lake, stream, and soil sediments
locked cycle flotation testA standard laboratory flotation test where certain intermediate streams are recycled into previous separation stages and the test is repeated across a number of cycles. This test provides a more realistic prediction of the overall recovery and concentrate grade that would be achieved in an actual flotation circuit, compared with a more simple batch flotation test.
measured mineral resourceA measured mineral resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of conclusive geological evidence and sampling. The term conclusive geological evidence means evidence that is sufficient to test and confirm geological and grade or quality continuity. The level of geological certainty associated with a measured mineral resource is sufficient to allow a qualified person to apply modifying factors, as defined in this section, in sufficient detail to support detailed mine planning and final evaluation of the economic viability of the deposit.
millIncludes any ore mill, sampling works, concentration, and any crushing, grinding, or screening plant used at, and in connection with, an excavation or mine.
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TermDefinition
mineral reserve
A mineral reserve is an estimate of tonnage and grade or quality of indicated and measured mineral resources that, in the opinion of the qualified person, can be the basis of an economically viable project. More specifically, it is the economically mineable part of a measured or indicated mineral resource, which includes diluting materials and allowances for losses that may occur when the material is mined or extracted.
The determination that part of a measured or indicated mineral resource is economically mineable must be based on a preliminary feasibility (pre-feasibility) or feasibility study, as defined by this section, conducted by a qualified person applying the modifying factors to indicated or measured mineral resources. Such study must demonstrate that, at the time of reporting, extraction of the mineral reserve is economically viable under reasonable investment and market assumptions. The study must establish a life of mine plan that is technically achievable and economically viable, which will be the basis of determining the mineral reserve.
The term economically viable means that the qualified person has determined, using a discounted cash flow analysis, or has otherwise analytically determined, that extraction of the mineral reserve is economically viable under reasonable investment and market assumptions.
The term investment and market assumptions includes all assumptions made about the prices, exchange rates, interest and discount rates, sales volumes, and costs that are necessary to determine the economic viability of the mineral reserves. The qualified person must use a price for each commodity that provides a reasonable basis for establishing that the project is economically viable.
mineral resource
A mineral resource is a concentration or occurrence of material of economic interest in or on the Earth’s crust in such form, grade or quality, and quantity that there are reasonable prospects for economic extraction.
The term material of economic interest includes mineralization, including dumps and tailings, mineral brines, and other resources extracted on or within the earth’s crust. It does not include oil and gas resources, gases (e.g., helium and carbon dioxide), geothermal fields, and water.
When determining the existence of a mineral resource, a qualified person, as defined by this section, must be able to estimate or interpret the location, quantity, grade or quality continuity, and other geological characteristics of the mineral resource from specific geological evidence and knowledge, including sampling; and conclude that there are reasonable prospects for economic extraction of the mineral resource based on an initial assessment, as defined in this section, that he or she conducts by qualitatively applying relevant technical and economic factors likely to influence the prospect of economic extraction.
net present value (NPV)The present value of the difference between the future cash flows associated with a project and the investment required for acquiring the project. Aggregate of future net cash flows discounted back to a common base date, usually the present. NPV is an indicator of how much value an investment or project adds to a company.
net smelter return (NSR)A defined percentage of the gross revenue from a resource extraction operation, less a proportionate share of transportation, insurance, and processing costs.
open pitA mine that is entirely on the surface. Also referred to as open-cut or open-cast mine.
ounce (oz) (troy)Used in imperial statistics. A kilogram is equal to 32.1507 ounces. A troy ounce is equal to 31.1035 grams.
overburdenMaterial of any nature, consolidated or unconsolidated, that overlies a deposit of ore that is to be mined.
penalty elementsElements that when recovered to a flotation concentrate, attract a penalty payment from the smelting customer. This is because those elements are deleterious, and cause quality, environmental or cost issues for the smelter. Includes elements such as As, Hg and Pb.
plantA group of buildings, and especially to their contained equipment, in which a process or function is carried out; on a mine it will include warehouses, hoisting equipment, compressors, repair shops, offices, mill or concentrator.
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TermDefinition
preliminary feasibility study, pre-feasibility study
A preliminary feasibility study (prefeasibility study) is a comprehensive study of a range of options for the technical and economic viability of a mineral project that has advanced to a stage where a qualified person has determined (in the case of underground mining) a preferred mining method, or (in the case of surface mining) a pit configuration, and in all cases has determined an effective method of mineral processing and an effective plan to sell the product.
A pre-feasibility study includes a financial analysis based on reasonable assumptions, based on appropriate testing, about the modifying factors and the evaluation of any other relevant factors that are sufficient for a qualified person to determine if all or part of the indicated and measured mineral resources may be converted to mineral reserves at the time of reporting. The financial analysis must have the level of detail necessary to demonstrate, at the time of reporting, that extraction is economically viable
probable mineral reserveA probable mineral reserve is the economically mineable part of an indicated and, in some cases, a measured mineral resource. For a probable mineral reserve, the qualified person’s confidence in the results obtained from the application of the modifying factors and in the estimates of tonnage and grade or quality is lower than what is sufficient for a classification as a proven mineral reserve, but is still sufficient to demonstrate that, at the time of reporting, extraction of the mineral reserve is economically viable under reasonable investment and market assumptions. The lower level of confidence is due to higher geologic uncertainty when the qualified person converts an indicated mineral resource to a probable reserve or higher risk in the results of the application of modifying factors at the time when the qualified person converts a measured mineral resource to a probable mineral reserve. A qualified person must classify a measured mineral resource as a probable mineral reserve when his or her confidence in the results obtained from the application of the modifying factors to the measured mineral resource is lower than what is sufficient for a proven mineral reserve.
proven mineral reserveA proven mineral reserve is the economically mineable part of a measured mineral resource. For a proven mineral reserve, the qualified person has a high degree of confidence in the results obtained from the application of the modifying factors and in the estimates of tonnage and grade or quality. A proven mineral reserve can only result from conversion of a measured mineral resource.
qualified person
A qualified person is an individual who is a mineral industry professional with at least five years of relevant experience in the type of mineralization and type of deposit under consideration and in the specific type of activity that person is undertaking on behalf of the registrant; and an eligible member or licensee in good standing of a recognized professional organization at the time the technical report is prepared.
For an organization to be a recognized professional organization, it must:
(A)    Be either:
(1)    An organization recognized within the mining industry as a reputable professional association, or
(2)    A board authorized by U.S. federal, state or foreign statute to regulate professionals in the mining, geoscience or related field;
(B)    Admit eligible members primarily on the basis of their academic qualifications and experience;
(C)    Establish and require compliance with professional standards of competence and ethics;
(D)    Require or encourage continuing professional development;
(E)    Have and apply disciplinary powers, including the power to suspend or expel a member regardless of where the member practices or resides; and;
(F)    Provide a public list of members in good standing.
reclamationThe restoration of a site after mining or exploration activity is completed.
refiningA high temperature process in which impure metal is reacted with flux to reduce the impurities. The metal is collected in a molten layer and the impurities in a slag layer. Refining results in the production of a marketable material.
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TermDefinition
resistivityObservation of electric fields caused by current introduced into the ground as a means of studying earth resistivity in geophysical exploration. Resistivity is the property of a material that resists the flow of electrical current
rock quality designation (RQD)A measure of the competency of a rock, determined by the number of fractures in a given length of drill core. For example, a friable ore will have many fractures and a low RQD.
rod millA rotating cylindrical mill which employs steel rods as a grinding medium.
royaltyAn amount of money paid at regular intervals by the lessee or operator of an exploration or mining property to the owner of the ground. Generally based on a specific amount per tonne or a percentage of the total production or profits. Also, the fee paid for the right to use a patented process.
run-of-mine (ROM)Rehandle where the raw mine ore material is fed into the processing plant’s system, usually the crusher. This is where material that is not direct feed from the mine is stockpiled for later feeding. Run-of-mine relates to the rehandle being for any mine material, regardless of source, before entry into the processing plant’s system.
semi-autogenous grinding (SAG)A method of grinding rock into fine powder whereby the grinding media consists of larger chunks of rocks and steel balls.
specific gravityThe weight of a substance compared with the weight of an equal volume of pure water at 4°C.
strike lengthThe horizontal distance along the long axis of a structural surface, rock unit, mineral deposit or geochemical anomaly.
supergeneMineral enrichment produced by the chemical remobilization of metals in an oxidized or transitional environment.
tailingsMaterial rejected from a mill after the recoverable valuable minerals have been extracted.
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25.0    RELIANCE ON INFORMATION PROVIDED BY THE REGISTRANT
25.1    Introduction
The QP fully relied on the registrant for the information used in the areas noted in the following sub-sections. The QP considers it reasonable to rely on the registrant for the information identified in those sub-sections, for the following reasons:
The registrant has been owner and operator of the gold mining operations for over 10 years;
The registrant has employed industry professionals with expertise in the areas listed in the following sub-sections;
The registrant has a formal system of oversight and governance over these activities, including a layered responsibility for review and approval;
The registrant has considerable experience in each of these areas.
25.2    Macroeconomic Trends
Information relating to inflation, interest rates, discount rates, exchange rates, and taxes was obtained from the registrant.
This information is used in the economic analysis in Chapter 19. It supports the assessment of reasonable prospects for economic extraction of the mineral resource estimates in Chapter 11, and inputs to the determination of economic viability of the mineral reserve estimates in Chapter 12.
25.3    Markets
Information relating to market studies/markets for product, market entry strategies, marketing and sales contracts, product valuation, product specifications, refining and treatment charges, transportation costs, agency relationships, material contracts (e.g., mining, concentrating, smelting, refining, transportation, handling, hedging arrangements, and forward sales contracts), and contract status (in place, renewals), was obtained from the registrant.
This information is used in the economic analysis in Chapter 19. It supports the assessment of reasonable prospects for economic extraction of the mineral resource estimates in Chapter 11, and inputs to the determination of economic viability of the mineral reserve estimates in Chapter 12.
25.4    Legal Matters
Information relating to the corporate ownership interest, the mineral tenure (concessions, payments to retain property rights, obligations to meet expenditure/reporting of work conducted), surface rights, water rights (water take allowances), royalties, encumbrances,
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easements and rights-of-way, violations and fines, permitting requirements, and the ability to maintain and renew permits was obtained from the registrant.
This information is used in support of the property description and ownership information in Chapter 3, the permitting and mine closure descriptions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
25.5    Environmental Matters
Information relating to baseline and supporting studies for environmental permitting, environmental permitting and monitoring requirements, ability to maintain and renew permits, emissions controls, closure planning, closure and reclamation bonding and bonding requirements, sustainability accommodations, and monitoring for and compliance with requirements relating to protected areas and protected species was obtained from the registrant.
This information is used when discussing property ownership information in Chapter 3, the permitting and closure discussions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
25.6    Stakeholder Accommodations
Information relating to social and stakeholder baseline and supporting studies, hiring and training policies for workforce from local communities, partnerships with stakeholders (including national, regional, and state mining associations; trade organizations; fishing organizations; state and local chambers of commerce; economic development organizations; non-government organizations; and, state and federal governments), and the community relations plan was obtained from the registrant.
This information is used in the social and community discussions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
25.7    Governmental Factors
Information relating to taxation and royalty considerations at the Project level, monitoring requirements and monitoring frequency, bonding requirements, and violations and fines was obtained from the registrant.
This information is used in the discussion on royalties and property encumbrances in Chapter 3, the monitoring, permitting and closure discussions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
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Ahafo Operations
Ghana
Technical Report Summary
Report current as of:
December 31, 2021
Qualified Person:
Mr. Donald Doe, RM SME.


Ahafo Operations
Ghana
Technical Report Summary
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NOTE REGARDING FORWARD-LOOKING INFORMATION
This Technical Report Summary contains forward-looking statements within the meaning of the U.S. Securities Act of 1933 and the U.S. Securities Exchange Act of 1934 (and the equivalent under Canadian securities laws), that are intended to be covered by the safe harbor created by such sections. Such forward-looking statements include, without limitation, statements regarding Newmont’s expectation for its mines and any related development or expansions, including estimated cash flows, production, revenue, EBITDA, costs, taxes, capital, rates of return, mine plans, material mined and processed, recoveries and grade, future mineralization, future adjustments and sensitivities and other statements that are not historical facts.
Forward-looking statements address activities, events, or developments that Newmont expects or anticipates will or may occur in the future and are based on current expectations and assumptions. Although Newmont’s management believes that its expectations are based on reasonable assumptions, it can give no assurance that these expectations will prove correct. Such assumptions, include, but are not limited to: (i) there being no significant change to current geotechnical, metallurgical, hydrological and other physical conditions; (ii) permitting, development, operations and expansion of operations and projects being consistent with current expectations and mine plans, including, without limitation, receipt of export approvals; (iii) political developments in any jurisdiction in which Newmont operates being consistent with its current expectations; (iv) certain exchange rate assumptions being approximately consistent with current levels; (v) certain price assumptions for gold, copper, silver, zinc, lead and oil; (vi) prices for key supplies being approximately consistent with current levels; and (vii) other planning assumptions.
Important factors that could cause actual results to differ materially from those in the forward-looking statements include, among others, risks that estimates of mineral reserves and mineral resources are uncertain and the volume and grade of ore actually recovered may vary from our estimates, risks relating to fluctuations in metal prices; risks due to the inherently hazardous nature of mining-related activities; risks related to the jurisdictions in which we operate, uncertainties due to health and safety considerations, including COVID-19, uncertainties related to environmental considerations, including, without limitation, climate change, uncertainties relating to obtaining approvals and permits, including renewals, from governmental regulatory authorities; and uncertainties related to changes in law; as well as those factors discussed in Newmont’s filings with the U.S. Securities and Exchange Commission, including Newmont’s latest Annual Report on Form 10-K for the period ended December 31, 2021, which is available on www.newmont.com.
Newmont does not undertake any obligation to release publicly revisions to any “forward-looking statement,” including, without limitation, outlook, to reflect events or circumstances after the date of this document, or to reflect the occurrence of unanticipated events, except as may be required under applicable securities laws. Investors should not assume that any lack of update to a previously issued “forward-looking statement” constitutes a reaffirmation of that statement. Continued reliance on “forward-looking statements” is at investors’ own risk.
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CONTENTS
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TABLES
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FIGURES
Figure 6-4:    Drill Section, Apensu Deeps
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1.0    EXECUTIVE SUMMARY
1.1    Introduction
This technical report summary (the Report) was prepared for Newmont Corporation (Newmont) on the Ahafo Operations (Ahafo Operations or the Project) located in the Republic of Ghana (Ghana).
Newmont has three subsidiaries registered under the laws of Ghana: Newmont Ghana Gold Ltd. (NGGL), Newmont Golden Ridge Ltd. (NGRL) and Moydow Limited (Moydow). For the purposes of this Report, the name Newmont is used interchangeably for the subsidiary and parent companies.
1.2    Terms of Reference
The Report was prepared to be attached as an exhibit to support mineral property disclosure, including mineral resource and mineral reserve estimates, for the Ahafo Operations in Newmont’s Form 10-K for the year ending December 31, 2021.
Mineral resources are reported for Apensu, Awonsu and Subika open pits, and Subika and Apensu underground. Mineral reserves are reported for Subika and Awonsu open pits and Subika underground. Mineral reserves are also estimated for material in stockpiles.
Unless otherwise indicated, all financial values are reported in United States dollars (US$). Unless otherwise indicated, the metric system is used in this Report. Mineral resources and mineral reserves are reported using the definitions in Regulation S–K 1300 (SK1300), under Item 1300. The Report uses US English. The Report contains forward-looking information; refer to the note regarding forward-looking information at the front of the Report.
1.3    Property Setting
The Ahafo Operations are located in western Ghana near the towns of Kenyasi and Ntotroso in the Ahafo Region, about 290 km northwest of Accra. The operations are 107 km northwest of Kumasi, and 40 km south of the regional capital of Sunyani. Road access to the Ahafo Operations is via Route 6, an asphalt-paved road from Accra to the Tepa Junction via Kumasi in the direction of Sunyani. From Tepa Junction, an asphalt-paved road leads west for 39 km to Hwidiem. A paved road then leads northwest for 8 km to the town of Kenyasi. Sunyani is a major regional center and is the source of supplies and fuel. Workers live in the surrounding communities.
The Project area falls within the wet semi-equatorial climatic zone of Ghana. The Ahafo Operations are conducted year-round.
The local topography comprises low rounded hills with elevations ranging from 110–540 masl. Two streams, the Subri and the Awonsu, drain from the Project area to the Tano River.
The Project shares a boundary with the Bosumkese Forest Reserve, and the Amoma Shelterbelt Forest Reserve bisects the Ahafo mining lease.
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1.4    Ownership
The Project is held through Newmont Ghana Gold Ltd., an indirectly-wholly owned Newmont subsidiary.
1.5    Mineral Tenure, Surface Rights, Water Rights, Royalties and Agreements
The Ahafo mining lease is separated into two areas, where Ahafo South is in Area A, and Ahafo North in Area B. Ahafo North is planned to be developed as a stand-alone operation and is not included in this Report.
Newmont currently holds three mining licenses, and nine prospecting licenses that in total cover an area of approximately 952 km2. The mining leases are current until 2031 and can be renewed by negotiation. The total area held under mining licenses is approximately 549 km2. The current mine take area is approximately 54 km2, and represents the area that has been fully compensated. Approximately 44 km2 has not been fully compensated (e.g., payment would be necessary to move people from their land).
The prospecting licenses are valid and are in good standing. The total area covered by prospecting licenses is about 403 km2.
Under Ghanaian law, only mining leases and prospecting licenses require surveys; reconnaissance license types are delineated by latitude/longitude co-ordinates. All of the Ahafo mining leases were surveyed by Newmont staff.
A number of payments are required to keep the licenses/leases in good standing, and include an annual rental that is payable by January of each year, and annual prospecting and mining permit payments, which are payable by January of each year. All required payments have been made as they fall due.
Newmont was granted a Plan of Operations (PoO) for the Ahafo Operations, and may use whatever land is necessary for its operations, but must respect the surface rights of other land users in relation to access and loss of crops, timber, or structures. Extensive title searches were conducted over the mining lease areas and no titles exist that would categorically exclude Newmont’s operations on the Project lands. Newmont’s indenture for surface lands will run concurrently with the life of the operations, but will extend for no more than 50 years.
Newmont holds permits to allow abstraction of groundwater, surface water, and water from the Tano River and discharge of water from its water storage facility.
The Government of Ghana has a 10% free-carried, fixed, non-equity, interest in the Ahafo Operations. Newmont pays the Government of Ghana a ninth of the dividend declared to Newmont shareholders. Since December 2015, Newmont has been obligated to pay 0.6% of the operational revenue if the gold price averages US$1,300/oz or higher, as an advance dividend against the one-ninth share.
A Revised Investment Agreement (the Agreement) between Newmont and the Government of Ghana defines and fixes, in specific terms, the effective corporate tax and royalty burden the Project will carry during operations. The Agreement establishes a fixed fiscal and legal regime, including sliding-scale royalty and tax rates for the duration of the Agreement’s stability period.
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Under the Agreement stability period, which now extends until the end of 2025, the tax rate will remain at 32.5%. After the cessation of the stability period, the tax rate will increase to 35%. During the stability period, Newmont will pay gross royalties on gold doré production in accordance with a sliding scale of 3–5%, tied to the gold price. After the Agreement ends, the royalty rate will be fixed at 5%.
A net smelter return (NSR) royalty of 2.0% is payable on all ounces produced from the Rank (formerly Ntotroso) concession. The royalty is paid to Franco-Nevada Corporation (Franco-Nevada), which acquired the royalty for US$58 M in November 2009. The majority of the Subika deposit, the northern portion of the Awonsu deposit, and the southern tip of the Amoma deposit fall within the Rank mining lease boundary.
An additional 0.6% is payable as a special fee for gold doré production from designated Forest Reserves.
1.6    Geology and Mineralization
The deposits that comprise the Ahafo Operations are considered to be examples of orogenic gold deposits.
Mineralization is developed in a Birimian succession that includes the Paleoproterozoic volcano–sedimentary Sefwi Belt, the Sunyani Basin and the Kumasi Basin. Three granite successions have intruded the Birimian rocks, including Cape Coast granitoids, Dixcove-type granitoids, and post-Tarkwaian granitoids.
Dixcove suite or “belt-type” granitoid rocks intrude the contact and are common in the metavolcanic rocks that form more or less elongate bodies parallel to the regional strike. Regional structure is controlled by the Kenyasi Thrust Fault; a northeast- to southwest-trending regional thrust fault that separates the Sefwi Belt from the Sunyani Basin. Mineralization consists of vein-style gold deposits, hosted in shear zones associated with the Kenyasi Thrust Fault.
Two distinct deposit styles are recognized within the Ahafo Operations. Kenyasi-style deposits, comprising Apensu, Awonsu, and Amoma, are associated with the Kenyasi Thrust Fault, along a sheared thrust contact between Dixcove Suite granitoids and footwall volcano-sedimentary units. Subika-style mineralization comprises gold that is entirely hosted in Dixcove granitoids, in the hanging wall of the Kenyasi Thrust Fault. To date, the only recognized deposit of the style is Subika.
Gold typically occurs as native gold, associated with pyrite. Alteration associated with the deposits includes silicification, albitization, pyritization, and carbonation.
1.7    History and Exploration
Exploration prior to Newmont’s Project interest was conducted by Normandy Mining Ltd. and associated companies. Work completed included geochemical sampling (sediment and soil), geological mapping, prospect evaluation and drilling, and mining studies.
Since Project acquisition in early 2002, Newmont has completed exploration drilling, collection of deep-sensing geochemical samples, airborne and ground geophysical surveys, environmental, geotechnical, mining and metallurgical studies. Open pit mining commenced in
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2006. A permitted underground trial mining program was conducted at Subika from 2012–2013, and commercial production from Subika underground was achieved in November 2018.
The Project area remains prospective. Within the immediate mining area, exploration potential includes the following:
Subika: testing for extensions of the mineralization to the northeast, and down plunge of the currently-defined limits of the deposit;
Apensu: drill testing of the northern strike and plunge extensions to the Apensu North mineralized shoot and Gap area depth potential.
Subika–Apensu: potential mineralization along the deep linking structures between Subika Underground and Apensu Deeps;
Awonsu: potential mineralization extents below the existing pit.
Near-mine exploration is planned to include:
Evaluating structurally-favorable zones and potential repetitions along and down-plunge of the Kenyasi Thrust between the Apensu South and Awonsu deposits;
Testing down plunge depth extensions to Subika;
Amoma: potential for mineralization extensions below the existing pit;
Drill testing of Subika structures and adjacent parallel fault trends defined by aeromagnetic, gradient array resistivity, 3D gravity models, geochemical datasets, and projections of the important, secondary, shallow-angle, low permeability faults which focus mineralization;
Drill testing previously identified geochemical and geophysical anomalies where these are potentially within trucking distance of the Ahafo process plant.
1.8    Drilling and Sampling
1.8.1    Drilling
A total of 12,902 drill holes (approximately 1.8 Mm) was completed within the Ahafo Operations area to December 31, 2021, including 4,792 core holes (1,321,915 m), 3,597 reverse circulation (RC) holes drill holes (234,566 m), 1,475 RC pre-collar/core tail holes (207,837 m), and 1,154 aircore drill holes (34,393 m).
Geological logging varies between drill types, but typically includes lithologies, alteration, sulfide content, oxidation states and presence of water. Core hole logging also records significant contacts, fractures, veins, and faults, core recovery and rock quality designation (RQD).
Except for the first few meters of individual RC holes, where recovery is typically in the 20–40% range, recovery is generally about 95–98%. Core recovery is normally 100% except for very rare times when drilling encounters fault and graphitic shear zones.
Drill collar locations have been recorded by surveyors using a number of methods, including optical instruments, or digital global positioning system (GPS) equipment. Downhole survey instrumentation included Welnav cameras, multi-shot Sperry-sun and Reflex single-shot and multi-shot downhole survey instruments. Depending on the drill type and program date, data were collected at 10–12 m depth, followed by surveys on 30 m intervals.
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Grade control drilling employs blast hole rigs on an approximate 4 m x 4.5 m spacing in both ore and waste zones. Blastholes are sampled by cutting a trench across the thickest portion of the cuttings pile and collecting the sample from the trench. Approximately 7 kg of sample is taken from one side of the trenched walls through the blast hole cuttings. If a duplicate sample is required from the blasthole, it is taken from the opposite wall of the trench.
1.8.2    Hydrogeology
Water quality monitoring done on site is based on a monitoring plan developed to guide ongoing sampling and analysis of process fluid including groundwater and surface water collected in conjunction with Newmont’s water resources monitoring program to meet operational needs and environmental protection requirements.
A groundwater model was developed in 2016 by Golder Associates, Africa, for the Ahafo Operations, primarily to support the open pit mines and the planned Subika underground mine. Evaluations of the potential to also underground mine adjacent to the Apensu open pit required updates to the groundwater model.
To the Report date, the hydrogeological data collection programs have provided data suitable for use in the mining operations, and have supported the assumptions used in the active pits and the Subika underground mine.
1.8.3    Geotechnical
The following general information are collected for geotechnical assessment of both open pit and underground excavations:
Rockmass classification and characterization data to estimate the rock quality;
Structural data to determine potential structural-controlled failures;
Damage mapping data to determine stress-related failures.
A fall-of-ground register is maintained for all rock events, which provides brief summary of sequence and nature of the rock event.
Run-of-mine (ROM) waste rock is used as fill material in the underground excavations. The suitability of the fill material is determined via the mechanical properties of the rock and fragmentation analysis to define material granularity and appropriateness.
The geological hard rock setting at the Ahafo Operations is well understood and displays consistency in the various open pits located on site. Additional testing continues to confirm the consistency of material strengths and parameters.
1.8.4    Sampling and Assay
RC samples are generally taken on 1 m intervals down hole. Core sample lengths vary from 0.2–1.5 m, with sample intervals chosen based on the geologic features of the rock including alteration.
Density (specific gravity) determinations were typically performed using water displacement methods.
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Independent primary laboratories used for sample preparation and analysis included Transworld Laboratories in Tarkwa, Ghana, SGS Laboratories in Bibiani/Tarkwa, Ghana (SGS), ALS Chemex in Kumasi, Ghana, ALS Chemex in Vancouver, Canada, ALS Chemex in Johannesburg, South Africa (collectively ALS), and UltraTrace Laboratory Pty Ltd in Perth, Western Australia (UltraTrace). SGS was the primary laboratory for all drill programs for the period June 2003 to 2010, and ALS has been the primary laboratory since. Both SGS and ALS are independent laboratory groups that operate globally, and the SGS/ALS laboratories used for the Project are accredited to ISO/IEC17025 for selected sample preparation and analytical techniques.
The on-site mine laboratory, SGS Ahafo, is used to prepare and analyze grade control, and metallurgical samples. It is also used as the sample preparation and analysis facility for exploration/development drill holes; there is a separate sample preparation site that has dedicated equipment and is only used to process exploration samples. The on-site mine laboratory holds ISO/IEC17025 accreditation.
Sample preparation procedures varied by sample type. Soil, rock chip, pit, aircore, and RC samples were crushed to either a nominal 90% passing -2 mm size fraction or a nominal 90% passing -3 mm size fraction. All samples were pulverized to a nominal 90% passing -75 µm. Core samples were crushed to a nominal 90% passing -2 mm size fraction, then pulverized to a nominal 95% passing 75 µm. Analytical methods employed included inductively-coupled plasma mass spectrometry (ICP-MS), atomic absorption spectrometry (AAS), and fire assay with an AAS finish.
1.8.5    Quality Assurance and Quality Control
Newmont has considerably modified the quality assurance and quality control (QA/QC) program at Ahafo from that used prior to 2004. Newmont maintains a QA/QC program for the Ahafo Operations. This includes regular submissions of blank, duplicate and standard reference materials (standards) in samples sent for analysis. Results are regularly monitored. Data for all three duplicate types indicates that the data are acceptably precise at both primary laboratories.
1.9    Data Verification
Newmont personnel regularly visit the laboratories that process Newmont samples to inspect sample preparation and analytical procedures.
The database that supports mineral resource and mineral reserve estimates is checked using electronic data scripts and triggers. Newmont also conducted a number of internal data verification programs since obtaining its Project interest. Newmont also conducts internal audits, termed Reserve and Resource Review (3R) audits, of all its operations. The most recent Ahafo Operations 3R audits were conducted in 2012, 2014, 2016, 2018, and 2020. Earlier audits, known as Five Star reviews, were undertaken in 2005 and 2006. The 2020 3R audit found that the Ahafo Operations were generally adhering to Newmont’s internal standards and guidelines with respect to the estimation of mineral resources and mineral reserves.
Data verification was performed by external consultants in support of mine development and operations. No material issues were identified in the reviews.
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The QP receives and reviews monthly reconciliation reports from the mine site. These reports include the industry standard reconciliation factors for tonnage, grade and metal. Through the review of these reconciliation factors the QP is able to ascertain the quality and accuracy of the data and its suitability for use in the assumptions underlying the mineral resource and mineral reserve estimates.
1.10    Metallurgical Testwork
Metallurgical testwork was conducted at Newmont Metallurgical Services and Hazen Research under the direction of Newmont personnel. An earlier phase of testwork in 2000 was completed under the direction of and interpreted by Lycopodium Pty Ltd.
Samples selected for metallurgical testing during feasibility and development studies were representative of the various styles of mineralization within the different deposits. Samples were selected from a range of locations within the deposit zones. Sufficient samples were taken and tests were performed using sufficient sample mass for the respective tests undertaken. Each year, samples are selected to represent the next three years of production in mine-to-mill testing, to ensure there sufficient current testwork to support knowledge of the mill feed materials, and support process assumptions. Samples are currently selected for every 300,000 t of ore to be processed, using a grade/tonnage table, and used in mine-to-mill testing.
Work completed included mineralogy, Bond, rod and ball mill work indices, abrasion indices and JKTech drop weight comminution parameters, grind size assessments, heap leaching, gravity concentration, cyanide leaching, reagent consumption, determination of thickening and slurry pumping characteristics, tailings geochemistry, and rheology tests.
The feed to the plant is currently both primary and oxide ore. Based on the life of mine plan, it is expected that the remaining 202 kt of stockpiled oxide ore will be processed in 2022. Average throughput projection is 9.5Mt per annum from 2022 to the end of mine life.
Recovery models were derived at a grind size of P80 106 µm, based on actual testwork conducted at current plant conditions, for the various deposits. These equations were used to determine the block by block recovery and the individual blocks recoveries were coded into the model for floating cones. Depending on the deposit recoveries over the life-of-mine (LOM) range from 81–94%. Stockpiled material is tracked by pit source and is assigned the same metallurgical recovery as the deposit it is sourced from.
The Ahafo ores are clean ores containing low levels of problematic elements. No appreciable levels of rich-solution-robbing materials are present in the ores. The ores contain low sulfide sulfur, and low concentrations of primary cyanide consumers (copper, nickel and zinc), which suggest that cyanide consumption may increase.
1.11    Mineral Resource Estimation
1.11.1    Estimation Methodology
Database closeout dates varied by deposit. Geological models were constructed using Vulcan geological modeling software. Block models were built with cell dimensions that were appropriate to the deposit style, orientation and dimensions of the mineralization. Exploratory data analysis made use of tools such as descriptive statistics, histograms, cumulative probability
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plots, box plots, and contact analysis of raw assays to guide the construction of the block model and the development of estimation plans. Specific gravity values were assigned to the block model based on oxidation surfaces. Grade caps were determined from raw assay or composite statistics for each geology domain. Composite lengths vary by deposit, and range from 2–8 m. Spatial variability of the gold grades was examined using correlograms and/or variograms.
All deposits were estimated using ordinary kriging (OK) interpolation methods. Grade estimations were selective by mineralization domains in most cases and restricted within a +0.2 g/t Au grade shell for open pit models and +2.0 g/t Au for underground models. The underground models (Subika underground and Apensu Deeps) were constrained within their mineralized shapes. Depending on the deposit, the minimum and maximum numbers of samples that were required to estimate a block (by domain) ranged from one to 30. Based on the relationships observed in the different variogram ranges, octant restrictions were implemented. Sample searches were tailored in such a manner that three to four drill holes were included along the strike of the ellipsoid, two to three drill holes were included perpendicular to strike and one to two composites were selected in the cross-plane direction. The high yield method was employed during the Subika open pit update to avoid including high-grade samples when estimating distant blocks.
Validation used Newmont-standard methods, including a combination of visual checks, swath plots, global statistical bias checks against input data, alternate estimation methods and reconciliation with historical mine/plant performance. The validation procedures indicated that the geology and resource models used are acceptable to support the mineral resource estimation.
Mineral resource classification was undertaken based primarily on drill spacing and number of drill holes used in the estimate. Mineral resources were classified as measured, indicated, and inferred. A quantitative assessment of geological risk was undertaken using Newmont-standard methods and applied on a block by block basis. Primary risks to resource quality include quantity and spacings of drill data, geological knowledge, geological interpretation and grade estimates. All identified risks are within acceptable tolerances with associated management plans.
Mineral resources considered amenable to open pit mining methods are reported within a mine design. Variable incremental cut-off grades that range from 0.39–0.40 g/t Au in saprolite to 0.52–0.57 g/t Au in transition/fresh material were used in the inputs. Mineral resources considered amenable to underground mining methods are reported within underground stope designs. Variable incremental cut-off grades that range from 2.0–2.4 g/t Au were used in the inputs.
Commodity prices used in resource estimation are based on long-term analyst and bank forecasts, supplemented with research by Newmont’s internal specialists. The estimated timeframe used for the price forecasts is the 11-year LOM that supports the mineral reserve estimates.
1.11.2    Mineral Resource Statement
Mineral resources are reported using the definitions set out in SK1300. The reference point for the estimate is in situ. Mineral resources are current as at December 31, 2021. Mineral resources are reported exclusive of those mineral resources converted to mineral reserves.
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Mineral resources that are not mineral reserves do not have demonstrated economic viability. Mineral resources are reported on a 100% basis. The Government of Ghana has a 10% free-carried interest in the Project. Newmont has a 90% interest.
The measured and indicated mineral resource estimates for the Ahafo Operations are summarized in Table 1-1. The inferred mineral resource estimates are summarized in Table 1-2.
1.11.3    Factors That May Affect the Mineral Resource Estimate
Factors that may affect the mineral resource estimate include: changes to long-term metal price assumptions; changes in local interpretations of mineralization geometry and continuity of mineralized zones; changes to geological and grade shape and geological and grade continuity assumptions; changes to input parameters used in the pit shells and stope outlines constraining the mineral resources; changes to the cut-off grades used to constrain the estimates; variations in geotechnical, mining, and processing recovery assumptions; and changes to environmental, permitting and social license assumptions.
1.12    Mineral Reserve Estimation
1.12.1    Estimation Methodology
Measured and indicated mineral resources were converted to mineral reserves. Mineral reserves are estimated for the Awonsu deposit, assuming open pit mining, and the Subika deposit, assuming open pit and underground mining. Stockpiled material is also included in the mineral reserves estimates. All inferred blocks are classified as waste in the cashflow analysis that supports mineral reserve estimation.
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Table 1-1:    Measured and Indicated Mineral Resource Statement
AreaMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Open pit5000.561030,0001.161,12030,5001.151,130
Underground16,6003.992,12016,6003.992,120
Ahafo Total5000.561046,6002.163,24047,1002.153,250
Table 1-2:    Inferred Mineral Resource Statement
AreaInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Open pit13,5001.3570
Underground10,8003.31,160
Ahafo Total24,3002.21,730
Notes to Accompany Mineral Resource Tables:
1.    Mineral resources are current as at December 31, 2021. Estimates are reported using the definitions in SK1300. The Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.    The reference point for the mineral resource estimate is in situ.
3.    Mineral resources are reported on a 100% basis. Newmont holds a 90% interest and the Government of Ghana has a 10% free-carried interest.
4.    Mineral resources are reported exclusive of mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
5.    Mineral resources that are potentially amenable to open pit mining methods are constrained within a designed pit shell. Mineral resources that are potentially amenable to underground mining methods are constrained within conceptual stope designs. Parameters used are summarized in Table 11-1 (open pit) and Table 11-2 (underground).
6.    Tonnages are metric tonnes rounded to the nearest 100,000. Gold grade is rounded to the nearest 0.01 gold grams per tonne. Gold ounces are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold ounces are reported as troy ounces, rounded to the nearest 10,000. Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”).
7.    Totals may not sum due to rounding.
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1.12.1.1    Open Pit
The Geovia Whittle pit optimization program (Whittle 4.7.3) was used to perform a Lerchs–Grossmann optimization in support of mineral reserves reporting for mineralization amenable to open pit mining methods. A safety crown pillar of 25 m is left between the base of the Subika Phase 4 pit and the top of the Subika underground stopes. This pillar will not be mined and thus makes Phase 4 the final open pit limit for the Subika deposit.
For mineral reserves, Newmont applies a time discount factor to the dollar value block model that is generated in the pit-limit analysis, to account for the fact that a pit will be mined over a period of years, and that the cost of waste stripping in the early years must bear the cost of the time value of money. Optimization work involved floating pit shells at a series of gold prices. The generated nested pit shells were evaluated using the reserve gold price of US$1,200/oz and an 8% discount rate. The pit shells with the highest NPV were selected for detailed engineering design work.
A realistic schedule was developed in order to determine the optimal pit shell; schedule inputs include the minimum mining width, and vertical rate of advance, mining rate and mining sequence. Whittle analysis indicated a two-stage pit development was the best option for Awonsu, using a minimum mining width of 50 m. Subika mining is in the final stage with limited potential to grow at depth because of the underground crown pillar. No changes were made to the Phase 4 pit design for Subika. The minimum mining width between the Subika Phase 4 and the mined-out third phase is 50 m. All operating pits are mined on 8 m benches. Mining dilution and recovery are included in the block model, based on historic reconciliation.
1.12.1.2    Underground
The mine plan assumes two mining methods:
Sub-level shrinkage stoping (SLS);
Long-hole open stoping (LHOS).
Stopes were created using Deswik Stope Optimizer software at the required stope height, length and cut-off criteria based on the mine area. The stope widths depend on the stope cut-off and dilution (over-break) added to stope design, and the mining method used. A stope recovery of 90% is expected in all mining areas. Dilution is projected to average 7.6%.
1.12.1.3    Stockpiles
Stockpile estimates were based on mine dispatch data; the grade comes from closely-spaced blasthole sampling and tonnage sourced from truck factors. The stockpile volumes were typically updated based on monthly surveys. The average grade of the stockpiles was adjusted based on the material balance to and from the stockpile.
1.12.1.4    Commodity Prices
Commodity prices used in mineral reserve estimation are based on long-term analyst and bank forecasts, supplemented with research by Newmont’s internal specialists. The estimated timeframe used for the price forecasts is the 11-year LOM.
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1.12.2    Mineral Reserve Statement
Mineral reserves have been classified using the definitions set out in SK1300. The reference point for the mineral reserve estimate the point of delivery to the process facilities. Mineral reserves are current as at December 31, 2021. Mineral reserves are reported on a 100% basis. The Government of Ghana has a 10% free-carried interest in the Project. Newmont has a 90% interest.
Mineral reserves are summarized in Table 1-3. Tonnages in the table are metric tonnes.
1.13    Factors That May Affect the Mineral Reserve Estimate
Factors that may affect the mineral reserve estimates include: changes to long-term metal price assumptions; changes in local interpretations of mineralization geometry and continuity of mineralized zones; changes to geological and grade shape and geological and grade continuity assumptions; changes to input parameters used in the pit shells and stope outlines constraining the mineral reserves; changes to the cut-off grades used to constrain the estimates; variations in geotechnical, mining, and processing recovery assumptions; and changes to environmental, permitting and social license assumptions.
1.14    Mining Methods
1.14.1    Open Pit
Open pit mining is conducted using conventional techniques and an Owner-operated conventional truck and shovel fleet.
Open pit design uses defined geotechnical domains together with rock mass quality ratings for the principal lithologies and appropriate pit design criteria that reflect expected conditions and risk. Inter-ramp angles vary by deposit and pit wall lithology, and range from 30–55º.
The active pits are currently mining below the water table. Pit dewatering uses a combination of perimeter and in-pit dewatering wells, in-pit sumps, and horizontal drains. A network of monitoring piezometers is installed around all of the operating pits.
The LOM plan currently envisages mining at an average rate of approximately 26 Mt/a for nine years and peaking at 32.2 Mt/a in 2022 with a maximum rate of advance by pit stage of eight benches per annum and an average of six benches (48 m) per year. The mine life will extend to 2030 with material mined from the open pit. Milling will cease in 2032 after treatment of stockpiled ore.
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Table 1-3:    Proven and Probable Mineral Reserve Statement
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade (g/t Au)Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade (g/t Au)Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade (g/t Au)Cont. Gold
(x 1,000 oz)
Open pit11,8002.3589039,7001.672,14051,4001.833,020
Underground9,4003.761,14012,7002.681,10022,2003.142,240
Stockpile l28,3000.9283028,3000.92830
Ahafo Total49,5001.802,86052,4001.923,240101,9001.866,090
Notes to Accompany Mineral Reserves Table:
1.Mineral reserves are current as at December 31, 2021. Mineral reserves are reported using the definitions in SK1300. The Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.The reference point for the mineral reserves is the point of delivery to the process plant.
3.Mineral reserves are reported on a 100% basis. Newmont holds a 90% interest and the Government of Ghana has a 10% free-carried interest.
4.Mineral reserves that are estimated using open pit mining methods are constrained within a pit design based on an optimized Lerchs–Grossmann pit shell. Parameters used are shown in Table 12-1 for the open pit mineral reserves and Table 12-2 and Table 12-3 for the underground mineral reserves.
5.Tonnages are metric tonnes rounded to the nearest 100,000. Gold grade is rounded to the nearest 0.01 gold grams per tonne. Gold ounces are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold ounces are reported as troy ounces, rounded to the nearest 10,000.
6.Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”).
7.Totals may not sum due to rounding.
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Pit design assumptions include haul road widths for two-way travel of 30 m, maximum ramp grades of 10% and minimum pit-bottom widths of 30 m in deep pits as a safety measure. For the last couple of benches to the pit bottom where good grades are located, the haul road widths are reduced to a 21 m one-way traffic to allow for maximum ore mining recovery.
1.14.2    Underground
Underground mining is currently conducted using conventional stoping methods, and conventional mechanized equipment. Underground mining is conducted by a contractor.
Mining levels are based on the mining method to be used, which varies by depth from surface. A set of twin spiral declines was developed off the existing main haulage decline. Level accesses were created off the decline at 20–25 m intervals, depending on mine elevation to intersect the ore zone. The ore drives have been driven to the extents of the defined mining corridor and stoping being retreated from the end of the orebody towards the accesses. These stopes are being mined top-down.
Mining was initially envisaged as long-hole open stoping mining method; however, an improved understanding of the geotechnical setting led to the selection of SLS in preference. A transition zone between mining methods at 450 m below surface was required to migrate the different stoping types. The mine will completely transition to the SLS mining method when the long-hole open stopes are complete, but currently the two mining methods are being used together.
Ground water inflows of approximately 40–45 L/s are predicted, and the current Subika dewatering system capacity is around 140 L/s.
The ventilation system for Subika includes refrigeration, primary and secondary fans and intake and return ventilation raises.
Trucks will be loaded from the level below the mining extraction level via the material placed in the ore pass. When stope mining is completed, the stopes will be backfilled with unconsolidated waste rock.
Underground infrastructure includes an electrical ring main, sumps, pumps and pump stations, cooling system, communications and telemetry system, mine control room, and two vehicle service bays.
1.15    Recovery Methods
The process plant design was based on a combination of metallurgical testwork, previous study designs and industry standard practices for handling combinations of fresh rock and saprolite, together with debottlenecking and optimization activities once the mill was operational. The design is conventional to the gold industry and has no novel parameters.
The process plant started operations in 2006 and was designed to treat 7.5 Mt/a using a blend of 27:73 oxide to primary ore. The plant was expanded in 2019 to treat an additional 3.0 Mt/a of primary ore. The planned throughput for the remaining LOM is projected to vary from 9.5–10.2 Mt/a (1,200–1,300 t/h), depending on the ore blend from the pits and underground operations.
The process consists of: primary crushing, semi-autogenous grind (SAG) milling, carbon-in-leach (CIL), Anglo American Research Laboratory method (AARL) elution circuit to strip gold
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from loaded carbon, smelting to produce doré, and counter-current decantation to recover cyanide from CIL tailings prior to discharge to the tailings storage facility (TSF).
Power is sourced from the local grid. The main water sources for the process plant are from stored water in the mined out Apensu open pit and the TSF. Potable water is sourced from boreholes. Consumables used include grinding media, reagents, and high- and low-pressure air.
1.16    Infrastructure
The majority of the key infrastructure to support the Ahafo Operations mining activities envisaged in the LOM is in place. During the remainder of the LOM, a new waste rock storage facility (WRSF) for storage of waste from the Apensu area will be required, as will a second water treatment plant.
Personnel commute from surrounding settlements or live in purpose-built accommodations villages.
A stockpiling strategy is practiced to defer lower-grade ores to the end of the mine life. All stockpile inventories are calculated and reported monthly. Inventories are based on truck counts of material added to and removed from stockpiles, multiplied by truck tonnage factors.
WRSFs are sited on hillsides as bank fills or within shallow drainages as complete valley fills and were sited 60–100 m from pit crests. Lift heights are typically planned at 16–20 m and the overall slopes are designed at 3:1. The LOM plan assumes that only two WRSFs, at Subika East and Awonsu, will be active for the remainder of the mine life.
The TSF is operated as a zero-discharge facility; all water is returned to the process facility for reuse. The main embankment has been constructed in stages. The northern upstream embankment serves as a downstream dam for a water storage facility. Permitted capacities meet the required capacities for the present LOM. A raise to Cell 1 will allow operations to 2029; a raise to Cell 2, planned for 2030, will support the operations to the end of the LOM. The two TSF expansions, a Cell 1 that would be expanded to a maximum capacity of 190 Mt and a newly-constructed 50 Mt capacity Cell 2, and an associated 300 m water storage facility buffer require resettlement of a number of families within the facility footprints.
Water management infrastructure for mine operations includes pit runoff, surface water and groundwater management infrastructure. A reverse osmosis water treatment plant is operational.
Newmont Africa in Ghana receives power purchased from the Volta River Authority’s grid. Power is delivered to Ahafo via three GRIDCO 161 kV transmission lines into the Ahafo (Kenyasi) Substation. Each transmission line is capable of delivering power sufficient to satisfy Ahafo’s current peak startup power demand of about 35 MW, as the capacity of each of these lines is approximately 120 MW. Newmont has also installed 27 MW of emergency power generating capacity.
1.17    Markets and Contracts
Newmont has established contracts and buyers for the doré products from the Ahafo Operations, and has an internal marketing group that monitors markets for its key products.
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Together with public documents and analyst forecasts, these data support that there is a reasonable basis to assume that for the LOM plan, that the key products will be saleable at the assumed commodity pricing. The doré is not subject to product specification requirements.
Newmont uses a combination of historical and current contract pricing, contract negotiations, knowledge of its key markets from a long operations production record, short-term versus long-term price forecasts prepared by the company’s internal marketing group, public documents, and analyst forecasts when considering long-term commodity price forecasts. Higher metal prices are used for the mineral resource estimates to ensure the mineral reserves are a sub-set of, and not constrained by, the mineral resources, in accordance with industry-accepted practice.
Newmont’s doré is sold on the spot market, by marketing experts retained in-house by Newmont. The terms contained within the sales contracts are typical and consistent with standard industry practice and are similar to contracts for the supply of doré elsewhere in the world.
The largest in-place contracts other than for product sales cover items such as bulk commodities, operational and technical services, mining and process equipment, and administrative support services. Contracts are negotiated and renewed as needed. Contract terms are typical of similar contracts in Ghana.
1.18    Environmental, Permitting and Social Considerations
1.18.1    Environmental Studies and Monitoring
Baseline and supporting environmental studies were completed to assess both pre-existing and ongoing site environmental conditions, as well as to support decision-making processes during operations start-up. Characterization studies were completed for climate, air quality, hydrology and surface water quality, hydrogeology, flora, fauna, soils, agriculture and land use, and the socioeconomic environment.
Plans were developed and implemented to address aspects of operations such as waste and fugitive dust management, air quality, spill prevention and contingency planning, water management, and noise levels.
The primary environmental resource monitored at Ahafo is water – both surface water and groundwater. Other resource monitoring being conducted by Newmont includes fugitive dust, point source emission, meteorological parameters, noise and vibration, revegetation progress, surface water run-off quantity and quality, mine pit conditions, waste rock disposal, TSF decant water quantity and quality, and environmental geochemistry of ore, waste rock and tailings.
1.18.2    Closure and Reclamation Considerations
In 2003, Newmont developed a conceptual closure and reclamation plan for the Ahafo South Mine Project Environmental Impact Statement (EIS) in compliance with requirements of the Environmental Protection Agency (EPA). The EIS was approved by the EPA in April 2005. A Draft Reclamation Plan to begin the process of formalizing the conceptual plan presented in the EIS was undertaken later in 2005. Under EPA requirements, Newmont is required to provide updates to the reclamation plan as mine development proceeds. An updated Closure and
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Reclamation Plan was developed in 2019 that covers closure of the Subika Underground and ancillary infrastructure as well as the prior existing facilities. A Reclamation Security Agreement (RSA) between the EPA and Newmont was signed in April 2008 to outline the various objectives and targets as guidance for the plan.
The EPA requires a Reclamation Bond to be posted as part of any mine permitting process. The bond is required to provide financial surety against non-compliance under the approved Closure and Reclamation Plan and is required within six months after the start of operations. As part of the reclamation and security agreement (environmental bond) with the Ghanaian Government, Newmont has provided a cumulative (project to date) cash deposit of US$12.66 M.
The closure cost estimate used in the economic analysis in Chapter 19 is US$0.2 B.
1.18.3    Permitting
All major permits and approvals are either in place or Newmont expects to obtain them in the normal course of business. Where permits have specific terms, renewal applications are made of the relevant regulatory authority as required, prior to the end of the permit term.
1.18.4    Social Considerations, Plans, Negotiations and Agreements
Newmont developed a public consultation and disclosure plan (PCDP) for the Ahafo Operations using guidelines and policies developed by the International Finance Corporation (IFC). The IFC requires public consultation as an on-going process to be conducted during the construction and operational phases of any project.
Newmont has well-established relationships, issue management approaches, engagement forums, and a suite of integrated social impact and opportunity-aligned strategic investment partnerships. Newmont understands and accepts the importance of proactive community relations as an overriding principle in its day-to-day operations as well as future development planning. The company therefore structures its community relations activities to consider the concerns of the local people and endeavors to communicate and demonstrate its commitment in terms that can be best appreciated and understood to maintain the social license to operate.
1.19    Capital Cost Estimates
Capital cost estimates are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Capital costs are based on recent prices or operating data. Capital costs include funding for infrastructure, pit dewatering, development drilling, and permitting as well as miscellaneous expenditures required to maintain production. Mobile equipment re-build/replacement schedules and fixed asset replacement and refurbishment schedules are included. Sustaining capital costs reflect current price trends.
The overall capital cost estimate for the LOM is US$0.5 B, as summarized in Table 1-4.
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1.20    Operating Cost Estimates
Operating cost estimates are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Operating costs are based on actual costs seen during operations and are projected through the LOM plan. Historical costs are used as the basis for operating cost forecasts for supplies and services unless there are new contract terms for these items. Labor and energy costs are based on budgeted rates applied to headcounts and energy consumption estimates.
Operating costs for the LOM are estimated at US$3.5 B, as summarized in Table 1-5.
Table 1-4:    Capital Cost Estimate
AreaUnitValue
Mining, open pitUS$ B0.2
Mining, undergroundUS$ B0.2
ProcessUS$ B0.1
TotalUS$ B0.5
Note: numbers have been rounded; totals may not sum due to rounding.
Table 1-5:    Operating Cost Estimate
AreaUnitValue
Mining, open pitUS$ B0.6
Mining, undergroundUS$ B1.2
ProcessUS$ B1.2
G&AUS$ B0.5
TotalUS$ B3.5
Note: numbers have been rounded; totals may not sum due to rounding.
The estimated LOM open pit mining cost is US$2.57/t and the underground mining cost is US$52.27/t. Base processing costs are estimated at US$11.84 /t. In addition, total G&A costs are estimated at US$5.15/t.
1.21    Economic Analysis
1.21.1    Economic Analysis
The financial model that supports the mineral reserve declaration is a standalone model that calculates annual cash flows based on scheduled ore production, assumed processing recoveries, metal sale prices and Gh$/US$ exchange rate, projected operating and capital costs and estimated taxes.
The financial analysis is based on an after-tax discount rate of 8%. All costs and prices are in unescalated “real” dollars. The currency used to document the cash flow is US$.
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All costs are based on the 2022 budget. Revenue is calculated from the recoverable metals and long-term metal price and exchange rate forecasts.
Taxes are based on Newmont’s existing agreement with the Government of Ghana.
The economic analysis assumes constant prices with no inflationary adjustments.
The NPV8% is $1.2 B. As the cashflows are based on existing operations where all costs are considered sunk to 1 January 2022, considerations of payback and internal rate of return are not relevant.
A summary of the financial results is provided in Table 1-6. In this table, EBITDA = earnings before interest, taxes, depreciation and amortization. The active mining operation ceases in 2032; however, closure costs are estimated to 2036.
1.21.2    Sensitivity Analysis
The sensitivity of the Project to changes in metal prices, exchange rate, sustaining capital costs and operating cost assumptions was tested using a range of 25% above and below the base case values Figure 1-1).
The Project is most sensitive to metal price changes, less sensitive to changes in operating costs, and least sensitive to changes in capital costs. The sensitivity to gold grade mirrors the sensitivity to the gold price and is not shown.
1.22    Risks and Opportunities
Factors that may affect the mineral resource and mineral reserve estimates are summarized in Chapter 1.11.3 and Chapter 1.12.3.
1.22.1    Risks
The risks associated with the Ahafo Operations are generally those expected with open pit and underground mining operations and include the accuracy of the resource model, unexpected geological features that cause geotechnical issues, and/or operational impacts.
Other risks noted include:
The mineral reserve estimates are sensitive to metal prices. Lower metal prices than forecast in the LOM plan may require revisions to the mine plan, with impacts to the mineral reserve estimates and the economic analysis that supports the mineral reserve estimates;
Labor cost increases or productivity decreases could also impact the stated mineral reserves and mineral resources;
Geotechnical and hydrological assumptions used in mine planning are based on historical performance, and to date historical performance has been a reasonable predictor of current conditions. Any changes to the geotechnical and hydrological assumptions could affect mine planning, affect capital cost estimates if any major rehabilitation is required due to a geotechnical or hydrological event, affect operating costs due to mitigation measures that may need to be imposed, and impact the economic analysis that supports the mineral reserve estimates;
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Expectations as to the performance of the Subika underground mining method;
Proposed community resettlement as part of the TSF planning for the LOM. There is a risk that this can be achieved with stakeholder approval and within the timelines anticipated and budgets allocated;
Galamsey (artisanal mining) activity can impact mine safety and operations;
Changes in climate could result in drought and associated potential water shortages that could impact operating costs and ability to operate;
Political risk from challenges to mining licenses and/or Newmont’s right to operate.
Table 1-6:    Cashflow Summary Table
ItemUnitValue
Metal prices
GoldUS$/oz1,200
Mined ore
TonnageM tonnes102
Gold gradeg/t1.9
Gold ouncesMoz6.1
Capital costsUS$B0.5
Costs applicable to salesUS$B4.2
Discount rate%8
Exchange rateUnited States dollar:Ghanaian cedi
(USD:GHS)
5.75
Free cash flowUS$B1.5
Net present valueUS$B1.2
Note: Numbers have been rounded; totals may not sum due to rounding. Table 1-6 contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbor created by such sections and other applicable laws. Please refer to the note regarding forward-looking information at the front of the Report. The cash flow is only intended to demonstrate the financial viability of the Project. Investors are cautioned that the above is based upon certain assumptions which may differ from Newmont’s long-term outlook or actual financial results, including, but not limited to commodity prices, escalation assumptions and other technical inputs. For example, Table 1-6 uses the price assumptions stated in the table, including a gold commodity price assumption of US$1,200/oz, which varies significantly from current gold prices and the assumptions that Newmont uses for its long-term guidance. Please be reminded that significant variation of metal prices, costs and other key assumptions may require modifications to mine plans, models, and prospects.
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Figure 1-1:    NPV Sensitivity
img1.jpg
Note: Figure prepared by Newmont, 2021. FCF = free cashflow; op cost = operating cost; cap cost = capital cost; NPV = net present value.
1.22.2    Opportunities
Opportunities include:
Conversion of some or all of the measured and indicated mineral resources currently reported exclusive of mineral reserves to mineral reserves, with appropriate supporting studies;
Upgrade of some or all of the inferred mineral resources to higher-confidence categories, such that such better-confidence material could be used in mineral reserve estimation;
Higher metal prices than forecast could present upside sales opportunities and potentially an increase in predicted Project economics;
Potential for new underground operations proximal to the current mineral resource and mineral reserve estimates, with the support of additional studies.
1.23    Conclusions
Under the assumptions presented in this Report, the Ahafo Operations have a positive cash flow, and mineral reserve estimates can be supported.
1.24    Recommendations
As the Ahafo Operations are operating mines, the QP has no material recommendations to make.
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2.0    INTRODUCTION
2.1    Registrant
This technical report summary (the Report) was prepared for Newmont Corporation (Newmont) on the Ahafo Operations (Ahafo Operations or the Project) located in the Republic of Ghana (Ghana). The location of the operations is shown in Figure 2-1.
Newmont has three subsidiaries registered under the laws of Ghana: Newmont Ghana Gold Ltd. (NGGL), Newmont Golden Ridge Ltd. (NGRL) and Moydow Limited (Moydow). For the purposes of this Report, the name Newmont is used interchangeably for the subsidiary and parent company.
2.2    Terms of Reference
2.2.1    Report Purpose
The Report was prepared to be attached as an exhibit to support mineral property disclosure, including mineral resource and mineral reserve estimates, for the Ahafo Operations in Newmont’s Form 10-K for the year ending December 31, 2021.
Mineral resources are reported for Apensu, Awonsu and Subika open pits, and Subika and Apensu underground.
Mineral reserves are reported for Subika and Awonsu open pits and Subika underground. Mineral reserves are also estimated for material in stockpiles.
2.2.2    Terms of Reference
The Ahafo Operations consist of two open pit operations at Awonsu and Subika, and underground operations at Subika.
Mining commenced in 2006 from open pit sources. Figure 2-2 shows the location of the current and mined-out open pits, and development prospects.
Unless otherwise indicated, all financial values are reported in United States (US) currency (US$). Business plans for 2020, 2021, and 2022 are referred to as BP2020, BP2021, and BP2022 respectively throughout this Report.
Unless otherwise indicated, the metric system is used in this Report.
Mineral resources and mineral reserves are reported using the definitions in Regulation S–K 1300 (SK1300), under Item 1300.
The Report uses US English.
The Report contains forward-looking information; refer to the note regarding forward-looking information at the front of the Report.
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Figure 2-1:    Project Location Plan
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Figure 2-2:    Mining Operations Layout Plan
image_6.jpg
Note: Figure prepared by Newmont, 2021.
2.3    Qualified Persons
The following Newmont employee serves as the Qualified Person (QP) for the Report:
Mr. Donald Doe, RM SME., Group Executive, Reserves, Newmont.
Mr. Doe is responsible for all Report Chapters.
2.4    Site Visits and Scope of Personal Inspection
Mr. Doe visited the Ahafo Operations on many occasions, most recently from November 11–15, 2019.
During this site visit, Mr. Doe inspected the operating open pits, and examined the underground operations. He visited the core shack and inspected drill core. Mr. Doe also viewed the Ahafo process plant and associated general site infrastructure, including the current tailings storage facility (TSF) operations.
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While on site, he typically discusses aspects of the operation with site-based staff. These discussions include the overall approach to the mine plan, anticipated mining conditions, selection of the production target and potential options for improvement, as well as reconciliation study results. Other areas of discussion include plant operation and recovery forecasts and plans for the expanded TSF. Mr. Doe reviews capital and operating forecasts with site staff.
Mr. Doe also reviews Newmont’s processes and internal controls on those processes at the mine site with operational staff on the work flow for determining mineral resource and mineral reserve estimates, mineral process performance, production forecasts, mining costs, and waste management.
2.5    Report Date
Information in the Report is current as at December 31, 2021.
2.6    Information Sources and References
The reports and documents listed in Chapter 24 and Chapter 25 of this Report were used to support Report preparation.
2.7    Previous Technical Report Summaries
Newmont has not previously filed a technical report summary on the Project.
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3.0    PROPERTY DESCRIPTION
3.1    Introduction
The Ahafo Operations are located in western Ghana near the towns of Kenyasi and Ntotroso in the Ahafo Region, about 290 km northwest of Accra. The operations are 107 km northwest of Kumasi, and 40 km south of the regional capital of Sunyani.
The Ahafo Operations are centered at about 2º20’59” west longitude, and 7º02’13” north latitude. The centroid locations, in latitude/longitude of the deposits that have mineral resource estimates are:
Subika: 2°21'49" west longitude and 6°59'51" north latitude;
Apensu: 2°21'44" west longitude and 7°01'17" north latitude;
Awonsu: 2°20'58" west longitude and 7°02'15" north latitude;
Amoma: 2°18'15" west longitude and 7°05'18" north latitude.
3.2    Property and Title in Ghana
3.2.1    Mineral Title
Mineral exploration and mining are administered in Ghana under the Minerals and Mining Act, 2006 (Act 703) and relevant Regulations that came into force in June 2012. These are Minerals and Mining (General) Regulations, Minerals and Mining (Licensing) Regulations, Minerals and Mining (Support Services) Regulations, Minerals and Mining (Compensation and Resettlement) Regulations, Minerals and Mining (Explosives) Regulations and the Minerals and Mining (Health, Safety and Technical) Regulations. The State is the owner of all minerals occurring in their natural state within Ghana's land and territorial sea, including its exclusive economic zone but is vested in the President on behalf of and in trust for the people of Ghana.
Three types of mineral rights can be granted after the applicant’s fiscal and technical ability to perform effective exploration or mining is verified: reconnaissance and prospecting licenses, and mining leases (Table 3-1).
3.2.2    Surface Rights
A mineral right holder is required to exercise their rights so that impacts on the interests of any lawful owner or occupier of the land are minimized. The lawful owner or occupier retains the right to graze livestock and cultivate the land in so far as such activities do not interfere with the mineral operations. The owner or occupier may apply to the mineral right holder for compensation for any disturbance of their rights, for damage to buildings, improvements, livestock, crops, or trees. Assessment of compensation eligibility and amount payable, in practice, requires extensive stakeholder engagement including affected landowners, the Land Valuation Division and cooperation of traditional authorities. Lawful owners or occupiers of land must obtain permission from a mining company to erect any building or structure on the land in an area of the lease declared a Mining Area by the mineral right holder.
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Table 3-1:    Types of Mineral Rights
Mineral Right NameComment
Reconnaissance License
Granted for a maximum area of 1,050 km2 in aggregate. Allows for non-intrusive reconnaissance exploration such as remote sensing, surface geology and geochemical sampling (no excavation or drilling) and confers exclusive rights to the holder to undertake reconnaissance for the specific granted mineral(s) for a year. License is renewable for another 12 months provided that notification of the intention to extend the term of the license is provided not later than 90 days before the expiration of the initial term of the license. Renewals must be supported by a professional technical terminal report.
Prospecting License
Confers exclusive rights to the holder to prospect for granted mineral(s). Licenses may not exceed 157.5 km2 in aggregate. Granted for an initial period not exceeding three years with the ability to renew for an additional period of not more than three years. Notification of intention to renew the term of the license must be received not later than 90 days before the expiration of the initial term of the license. Renewals must be supported by a professional terminal report. License holder is required to relinquish not less than half of the original license area after the expiration of the first three-year term
Mining Lease
Required to commence mining operations. Requires the applicant to submit a feasibility report in accordance with the Minerals Commission’s guidelines, stating how the planned mining operation is to be carried out. The lease area is limited to a maximum area of 63 km2; however, an enlargement of the lease area may be granted by the Minister responsible for mines if satisfied on reasonable grounds that the additional area is required for the holder’s operations. Granted for a maximum 30-year term, and renewable thereafter upon negotiated terms.
Although some parts of the Ghanaian land law are derived from English common law and equity, the fundamental principles of land ownership are distinct from that of the English law of real property. The basis of English law of real property is that the Crown owns all land; however, in Ghana land is owned by various Stools, families, or clans (the owners). The Government of Ghana may only hold land by acquisition from these traditional owners, if necessary, in the interest of defense, public safety, public order, public morality, public health, town and country planning or the development or utilization of property in such a manner as to promote the public benefit and fair and adequate compensation is paid.
Traditionally, the owners of non-vested Stool lands enjoy much wider rights than is the case for vested lands, but in practice traditional authorities and privileges are similar to those due to the Crown and generally result in a similar outcome. The ability of the traditional Stool owners to exercise exclusive rights depends on ancestral links and the individuals’ standing within the community.
Land-use rights vary between landlords and tenants. Generally, a landlord is a property holder who has exclusive rights to use or to dispose of use rights to land. Land use rights are typically acquired from traditional rulers and family heads or by inheritance and are disposed otherwise by contracts for sharecropping or lease.
A given householder may be a landlord of one farm field, a sharecropper on another and a caretaker on a third.
Largely, with respect to land within the area affected, the original (traditional) owners retain the surface rights, as in the Asutifi North District where the Ahafo Operations are located, unless their rights are curtailed by Newmont being awarded a mining lease and paying the appropriate compensation. The grant of a mining lease by the Government of Ghana may curtail the
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interest of traditional owners. Thus, the lease agreement requires the payment of revenue to the affected owner in the form of ground rent which for traditional owners are managed by the Office of the Administrator of Stool Lands for the benefit of the traditional owners and the District within which the mineral rights sits.
3.2.3    Royalties
The Government of Ghana levies royalties on mining projects, including the Ahafo Operations. These are discussed in Chapter 3.9.
3.3    Ownership
3.3.1    Ownership History
In 1993, a joint venture (JV) agreement was signed between the French governmental organization Bureau Recherché Geologiques et Minieres (BRGM) and the South African company Gencor Ltd (Gencor) to explore in Ghana and Cote d’Ivoire. In 1994, the JV signed an option agreement with Ghanaian company Minconsult over the Yamfo license and formed the Centenary Gold Mining Company (41% BRGM, 41% Gencor, 8% Minconsult, and 10% Ghanaian Government). In the same year, La Source Compagnie Miniere SAS (La Source) was established with Normandy Mining Limited (Normandy) holding 60%, and BRGM 40%. La Source took over BRGM’s West African exploration and mining assets. In 1998, La Source consolidated its position when it acquired the former Gencor and Minconsult interests in Yamfo. In 2000, the name Centenary Gold Mining Company Limited was changed to Normandy Ghana Gold Limited (NGGL).
The Ntotroso license area (formerly the Rank Mining Concession) was acquired in 1997 when La Source purchased a 40% share in Rank Mining Company Limited (Rank). Rank held a 40% interest in the Rank JV Farm-In Agreement with Moydow Mines International Inc (Moydow; 60% interest), that covered the Ntotroso concessions. La Source increased its holding in Rank, and thus the JV, to 50% in 2001, by funding exploration and development in accordance with the agreement.
Newmont acquired Normandy and the Ghanaian projects in early 2002. In December 2003, Newmont acquired the remaining 50% interest in Rank. The same month, Newmont and the Government of Ghana signed an investment agreement guaranteeing Newmont certain financial and operating rights over a period of 30 years for its projects in Ghana.
Newmont renamed the Sefwi and Ntotroso projects to Ahafo, and then separated the area into two sections, Ahafo North and Ahafo South, based on location north or south of the Shelterbelt Forest Reserve. Ahafo North will be a completely stand-alone operation, with no major shared infrastructure with Ahafo South. This Report focuses on Ahafo South.
3.3.2    Current Ownership
The Project is held through Newmont Ghana Gold Ltd., an indirectly-wholly owned Newmont subsidiary.
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3.4    Mineral Title
Newmont currently holds three mining licenses, and nine prospecting licenses that in total cover an area of 951.93 km2:
The mining leases are current until 2031 and can be renewed by negotiation. The total area held under mining licenses is approximately 548.73 km2;
The prospecting licenses are valid and are in good standing. The total area covered by prospecting licenses is about 403.20 km2.
The Ahafo mining lease is separated into two areas, where Ahafo South is in Area A, and Ahafo North in Area B (Figure 3-1). Ahafo North is planned to be developed as a stand-alone operation, will not share infrastructure or facilities with Ahafo South, and is not included in this Report. The licenses within the Ahafo South (Ahafo Operations) area are shown in Figure 3-2. A summary of the mineral tenure that makes up the Ahafo Operations is provided in Table 3-2.
The current mine take area is approximately 53 km2, and represents the area that has been fully compensated. Approximately 43 km2 has not been fully compensated (e.g., payment would be necessary to move people from their land).
Under Ghanaian law, only mining leases and prospecting licenses require surveys; reconnaissance license types are delineated by latitude/longitude co-ordinates. All of the Ahafo mining leases were surveyed by Newmont staff, using global positioning system (GPS) readings and identifiable benchmarks on topographic maps to locate the boundary pillars on the ground from site plans.
A number of payments are required to keep the licenses/leases in good standing, and include:
Annual rental: payable by January of each year;
Annual prospecting and mining permit payments: payable by January of each year.
All required payments have been made as they fall due.
3.5    Surface Rights
Newmont was granted a Plan of Operations (PoO) for the Ahafo Operations, and may use whatever land is necessary for its operations but must respect the surface rights of other land users in relation to access and loss of crops, timber, or structures. Extensive title searches were conducted over the mining lease areas and no titles exist that would categorically exclude Newmont’s operations on the Project lands. Newmont’s indenture for surface lands will run concurrently with the life of the operations, but will extend for no more than 50 years.
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Figure 3-1:    Ahafo District Mineral Tenure Map
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Note: Figure prepared by Newmont, 2021.
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Figure 3-2:    Ahafo Operations Mineral Licenses Map
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Note: Figure prepared by Newmont, 2021.
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Table 3-2:    Mineral Tenure Summary Table
ConcessionLicense TypeLicense Number
Size (km2)
Grant DateExpiry Date
Ahafo (Area A)Mining LeaseLVB 7523/2001272.581/22/20016/12/2031
Ahafo (Area B)Mining LeaseLVB 7523/2001187.531/22/20016/12/2031
BonkoriProspectingPL 7/1231.896/4/20196/3/2022
DekyemProspectingPL7/82; LVB 3080/0536.756/17/20196/16/2022
Dekyem SouthProspectingPL7/12242.636/30/20206/29/2023
GoaMining Lease1809/2005; LVB13908/0511.9710/7/200110/6/2031
GoaProspectingRL 7/36; LVB 3082/0592.196/10/20196/9/2022
GoasoProspectingPL 7/3129.611/23/20191/22/2022
MampehiaProspectingPL (7/85); LVB 5014/200636.127/18/20197/17/2022
MankrahoProspectingPL 7/87; LVB 10714/03103.536/4/20196/3/2022
Ntotroso (Rank Mining)Mining LeaseLVB 7524/200176.656/13/20016/12/2031
Nyameakyede (Akyerensua)ProspectingRL 7/54; LVB 26942/0725.416/4/20196/3/2022
TanosoProspectingPL 7/8435.071/23/20191/22/2022
Note: All dates in month/day/year format.
The Ahafo operations cover an area of approximately 137,000 acres (55,000 hectares) for the mining lease concession with current mine take area of approximately 13,200 acres (5,300 hectares) that has been fully compensated and approximately 10,700 acres (4,300 hectares) of mining area that has not been fully compensated (e.g., payment would be necessary to move people from their land).
3.6    Water Rights
Newmont holds permits to allow abstraction of groundwater, surface water, and water from the Tano River and discharge of water from the water storage facility (see Chapter 17 for additional details).
3.7    Forest Reserves
Areas of productive Forest Reserves were designated in the vicinity of the Ahafo Operations. These areas include the Bosumkese Forest Reserve and the Amoma Shelterbelt Forest Reserve (refer to Figure 3-1).
Potential impacts on the Forest Reserves include roads, powerline access, and general proximity of mining operations to the Forest Reserve areas.
3.8    Agreements
3.8.1    Investment Agreement
The Revised Investment Agreement (the Agreement) between Newmont and the Government of Ghana defines and fixes, in specific terms, the effective corporate tax and royalty burden the Project (including Ahafo South and Ahafo North) will carry during operations. The Agreement
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establishes a fixed fiscal and legal regime, including sliding-scale royalty and tax rates for the duration of the Agreement’s stability period.
The Agreement was re-negotiated and ratified in December, 2015. Under the Agreement stability period, which now extends until the end of 2025, the tax rate will remain at 32.5%. After the cessation of the stability period, the tax rate will increase to 35%. During the stability period, Newmont will pay gross royalties on gold doré production in accordance with a sliding scale of 3–5%, tied to the gold price. After the Agreement ends, the royalty rate will be fixed at 5%.
An additional 0.6% is payable as a special fee for gold doré production from designated Forest Reserves (see discussion in Chapter 3.7).
3.8.2    Government of Ghana Free-Carried Interest
The Government of Ghana has a 10% free-carried interest in the Ahafo Operations. Newmont pays the Government of Ghana a ninth of the dividend declared to Newmont shareholders. Since December 2015, Newmont has been obligated to pay 0.6% of the operational revenue if the gold price averages US$1,300/oz or higher, as an advance dividend against the one-ninth share.
3.9    Royalties
A net smelter return (NSR) royalty of 2.0% is payable on all ounces produced from the Rank (formerly Ntotroso) concession. The royalty is paid to Franco-Nevada Corporation (Franco-Nevada), which acquired the royalty for US$58 M in November 2009. The majority of the Subika deposit, the northern portion of the Awonsu deposit, and the southern tip of the Amoma deposit fall within the Rank mining lease boundary.
Royalties in forest reserves are currently not applicable for the Ahafo Operations.
3.10    Encumbrances
There are no known encumbrances.
3.11    Permitting
Permitting and permitting conditions are discussed in Chapter 17.9 of this Report. There are no relevant permitting timelines that apply; the operations as envisaged in the LOM plan are either fully permitted, or the processes to obtain permits are well understood and similar permits have been granted to the operations in the past, such as tailings storage facility (TSF) raises.
There are no current material violations or fines, as imposed in the mining regulatory context of the Mine Safety and Health Administration (MSHA) in the United States, that apply to the Ahafo Operations.
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3.12    Significant Factors and Risks That May Affect Access, Title or Work Programs
Newmont’s Ahafo concession started in 2008 at Kenyase (Ahafo South) and spread to the Ahafo North communities. However, Newmont embarked on a series of facilitated interventions in collaboration with the communities and National Security to drastically discourage illegal mining. Notwithstanding this, the activity intermittently continued until the Government of Ghana implemented an ‘operations-stop-galamsey’ policy which has brought illegal mining to a temporary halt both in the Newmont concessions and elsewhere in Ghana.
The surge in galamsey (illegal mining) activities in the last few years within the mining area has been identified as a major risk to Newmont’s short-, medium- and long-term sustainability and has the potential to drive community conflict due to encroachment on farmlands and its attendant social vices. Newmont has seen increases in violent confrontations between illegal galamsey operatives and public/private security and use of illegal explosives within the Mine Take area, invasion of active mining pits and run-of-mine (ROM) pad, among others.
Newmont is implementing the Ahafo Dome Project that involves increased aerial surveillance, coupled with a dedicated Mobile Response Unit consisting of several teams within the area that has been designated as having restricted access (mine take area). Measures that include immediate and responsible removal of galamsey operators within the mine take can be conducted per an established protocol with the support of security and the social and environmental departments. Such measures, performed in collaboration with the relevant government, public security officials and traditional authorities, has resulted in significant reduction in the numbers in key areas that pose a threat to the mine.
Newmont continues to pursue implementation of the livelihood approach under Newmont’s Regional galamsey strategy which complements galamsey operative removals from the mining areas. This involves identification of community workers in the galamsey value chain who are interested in pursuing alternative livelihood opportunities.
Despite the above, the threat of illegal mining still exists, except that frequent monitoring as mentioned wards off such incursions.
To the extent known to QP, there are no other known significant factors and risks that may affect access, title, or the right or ability to perform work on the properties that comprise the Ahafo Operations that are not discussed in this Report.
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4.0    ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE AND PHYSIOGRAPHY
4.1    Physiography
The Ahafo Operations area comprises low rounded hills with elevations ranging from 110 m to 540 masl. The upper part of the Tano River basin is drained by a number of seasonal streams that are tributaries of the Tano River. Two streams, the Subri and the Awonsu, drain from the Project area to the Tano River.
The Project shares a boundary with the Bosumkese Forest Reserve, and the Amoma Shelterbelt Forest Reserve bisects the Ahafo mining lease.
The Ahafo Operations area consists primarily of subsistence farms with small-scale commercial farming intermingled with areas of forest regrowth and remnants of secondary forest. The major agricultural land uses are cocoa, food crops, and rice farming. South of the Bosumkese Forest Reserve, cocoa farming is the major activity, while to the north maize farming dominates.
4.2    Accessibility
Road access to the Ahafo Operations is via Route 6, an asphalt-paved road from Accra to the Tepa Junction via Kumasi in the direction of Sunyani, a distance of approximately 300 km. From Tepa Junction, an asphalt-paved road leads west for 39 km through the villages of Tepa and Akyerensua to Hwidiem. A paved road then leads northwest for 8 km to the village of Kenyasi. Newmont constructed a bypass north of Kenyasi to facilitate supply deliveries, and route traffic around the town for safety reasons.
The operating mines are all accessible on mine roads from the plant site.
4.3    Climate
The Project area falls within the wet semi-equatorial climatic zone of Ghana that is characterized by an annual double maxima rainfall pattern, occurring in the months of May to July and from September to October.
Mean annual rainfall for the Project area is between 1,354–1,400 mm. Typically, minimal rainfall is experienced from December to the end of February, with January as the driest month. Mean monthly temperatures within the area range from 23.9–28.4°C.
The Ahafo Operations are conducted year-round.
4.4    Infrastructure
The Project lies within two Administrative Districts, Tano North in the north and Asutifi North in the south. Each district has its own central government-based District Council as well as a number of Traditional Government Paramount Chieftaincies.
Sunyani is a major regional center and is the source of supplies and fuel. There are adequate schools, medical services and businesses to support the work force. A skilled and semi-skilled
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mining workforce has been established in the region as a result of on-going mining activities. Workers live in the surrounding communities.
The Ahafo Operations currently have all infrastructure in place to support mining and processing activities (see also discussions in Chapter 13, Chapter 14, and Chapter 15 of this Report). These Report chapters also discuss water sources, electricity, personnel, and supplies.
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5.0    HISTORY
The exploration and development history of the Ahafo Operations is summarized in Table 5-1. Two open pits, Apensu and Amoma, were mined out in 2016 and 2017 respectively.
Table 5-1:    Exploration and Development History Summary Table
YearCompanyNote
1989–1991Ghanaian–German mineral prospecting projectIdentified a gold-in-soil anomaly that had a strike-length of 1.2 km
1992MinconsultSoil sampling on 50 m x 400 m grid
1993–1995BRGM and Gencor/Centenary Mining CompanyStream sediment sampling, soil sampling, trenching, pitting, rotary air blast (RAB), reverse circulation (RC) and core drilling and an initial mineral resource estimate
1996BRGM and Gencor/Centenary Mining CompanyScoping study evaluated the Teekyere West, Yamfo Central and Line 10 deposits (now within the Ahafo North area)
Moydow Mines International Inc. (Moydow)Identified eight major gold-in-soil anomalies in the Ntotroso Prospecting License (Rank Concession)
1997BRGM and Gencor/Centenary Mining CompanyFeasibility study based on an updated resource estimate commenced but halted due to falling commodity prices
MoydowRC drilling program completed on Areas A (now the Apensu–Awonsu area), C (now Amoma) and E (now Subika). Resource estimates for Areas A and C
1998NormandyBRGM, La Source and Normandy joint venture dissolved; Normandy takes over operations. Commenced major drill program
1999Completed pre-feasibility study
2000NormandyCompleted feasibility study
MoydowResource estimate at Subika. Rank Development and Production Agreement signed by La Source and Moydow, to allow for treatment of mineralization from the Rank Concession deposits through a common plant. Feasibility study on the Subika and Area A deposits
2002NewmontMerges with Normandy, renames area to Ahafo
2003
Feasibility study on Ahafo North and South deposits.
Purchases Moydow properties, Moydow retains 2% NSR royalty, covering covers 78 km2 of the southeastern end of the Project area
2006Constructed process plant. Commenced open pit mining at the Apensu deposit
2008Identified Subika underground
2009Franco NevadaFranco Nevada purchases Moydow 2% NSR royalty
2012–2013NewmontUnderground trial mining program at Subika
2014Identified Apensu Deeps area
2016Extension of mineralization to the north of Apensu identified. Apensu open pit mined out
2017Amoma open pit mined out
2018Commercial production from Subika underground
2019Initiated studies to change mining method at Subika underground to sub-level shrinkage stoping
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6.0    GEOLOGICAL SETTING, MINERALIZATION, AND DEPOSIT
6.1    Deposit Type
The deposits that comprise the Ahafo Operations are considered to be examples of orogenic gold deposits. Such deposits have many synonyms including mesothermal, mesozonal and hypozonal deposits, lode gold, shear zone-related quartz–carbonate deposits, or gold-only deposits (Groves et al., 1998).
Orogenic gold deposits occur in variably deformed metamorphic terranes formed during Middle Archean to younger Precambrian, and continuously throughout the Phanerozoic. The host geological environments are typically volcano–plutonic or clastic sedimentary terranes, but gold deposits can be hosted by any rock type. There is a consistent spatial and temporal association with granitoids of a variety of compositions. Host rocks are metamorphosed to greenschist facies, but locally can achieve amphibolite or granulite facies conditions.
Gold deposition occurs adjacent to first-order, deep-crustal fault zones. Economic mineralization typically formed as vein fill of second- and third-order shears and faults, particularly at jogs or changes in strike along the crustal fault zones. Mineralization styles vary from stockworks and breccias in shallow, brittle regimes, through laminated crack-seal veins and sigmoidal vein arrays in brittle-ductile crustal regions, to replacement- and disseminated-type orebodies in deeper, ductile environments.
Quartz is the primary constituent of veins, with lesser carbonate and sulfide minerals. Sulfide minerals can include pyrite, pyrrhotite, chalcopyrite, galena, sphalerite, and arsenopyrite. Gold is usually associated with sulfide minerals, but native gold can occur.
6.2    Regional Geology
The West African craton is sub-divided into two domains, the Archean Reguibat Shield, in Mauritania to the north, and the Paleo-Proterozoic Man Shield in the south between Ghana and Senegal. The Man Shield is divided into two sectors, a western portion consisting of rocks of Liberian age (3.0–2.5 Ga) and an eastern terrain underlain by Paleoproterozoic Birimian rocks.
The Birimian rocks consist of five evenly-spaced tholeiitic to acidic composition volcanic belts trending northeast–southwest. Three granite successions intrude the Birimian rocks. Basins between the volcanic belts are filled by predominantly turbiditic sedimentary rocks. The transition zones between the volcanic rocks and the sedimentary rocks are filled with chemical sedimentary rocks. All the units are contemporaneous and may be laterally equivalent facies.
The Ahafo deposits are located in the Sefwi Belt, one of the five Birimian volcanic belts. Volcanic rocks in the belt are mainly basaltic and are metamorphosed to varying degrees from lower greenschist to lower amphibolite facies with elongate hornblende-bearing granite plutons of the Dixcove suite. The sedimentary succession consists mainly of fine to medium-grained lithologies (argillites and wackes) with variable amounts of volcaniclastic material. Cape Coast-type two-mica granites intrude the metasedimentary rocks.
Faults and associated structures display a complex history of movement including thrust faulting and shearing with both normal and strike–slip motion and have played a major role in
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emplacement of mesothermal gold mineralization. Regional structure is controlled by the Kenyasi Thrust Fault, a northeast to southwest trending regional thrust complex.
6.3    Local Geology
The Ahafo Operations area includes four deposits localized along two northeast-striking structural zones (Figure 6-1). A stratigraphic column for the district is provided in Figure 6-2.
Discrete mineralization styles are recognized within the Ahafo Operations area, which are termed Kenyasi-style (shear-zone hosted) and Subika-style (granite hosted).
Mineralization in Kenyasi-style deposits is associated with mixed (meta)-pelitic sedimentary rocks and (meta)-mafic volcanic units along the footwall of the Kenyasi Thrust Fault. Dixcove Suite granitoids form the hanging wall to the thrust, and appear to be overthrust onto the volcano–sedimentary sequence. Multiple thrust fault duplexes developed along the thrust contact between the granitoids in the hanging wall and volcano/sedimentary rocks in the footwall and are favorable sites for gold deposition.
In Subika-style deposits, mineralization is hosted in Dixcove Suite granitoids. The granitoids are cut by multiple mylonite zones that occur as imbricate thrusts and vary in thickness from <1 m to as much as 10 m. Zones of brittle fracturing and dilatant breccias are commonly developed over the mylonite zones and are favorable loci for gold deposition.
6.4    Property Geology
6.4.1    Apensu
The Apensu deposit, a Kenyasi-style deposit, is located on the main Kenyasi Thrust Fault zone at the southern edge of the Ahafo trend.
The Apensu deposit had horizontal dimensions of approximately 4,200 x 600 m, and has been drill tested to 800 m vertical depth. The mineralization remains open at depth and towards the north along strike.
Mineralization was developed in mylonitic to cataclasite units along the sheared contact between footwall Birimian volcano–sedimentary units and hanging wall granodiorite. Footwall units included phyllonite, meta-volcano–sedimentary units, and mixed mylonitic volcano–sedimentary units.
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Figure 6-1:    Project Geology
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Note: Figure prepared by Newmont, 2021
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Figure 6-2:    Stratigraphic Column
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Note: Figure prepared by Newmont, 2021.
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The shear zone varied in width from about 10–75 m in true width, with gold mineralization grading >0.5 g/t Au and varying from 30–150 m in width. Higher gold grades (>5 g/t Au) were hosted in, or immediately adjacent to, strongly-altered quartz–calcite veined cataclasite. The veins ranged from veinlets of 0.1–3.0 cm in width to silica-rich veins that ranged from 2–10 cm in width.
Six structural components were identified within the Apensu Main deposit. From oldest to youngest, these are:
A zone of plastic deformation in the footwall mixed mylonite zones, graphitic and meta-volcano–sedimentary units;
Three hanging wall splays off the Kenyasi Thrust, S1, S2 and S3, which form zones of mylonite that display brittle reactivation;
A splay fault in the footwall that is interpreted as a plastically-deformed, locally anastomosing shear zone and is marked with graphite;
A cataclasite unit that is formed by brittle deformation and re-activation of the rigid granitoid forms finely-crushed rock with local tectonic breccias.
Four types of alteration were recognized and assigned logging codes, from least to most altered:
Code 0: greenschist minerals including chlorite, calcite and rare pyrite but no evidence of hydrothermal alteration;
Code 1: slightly bleached due to the alteration of some chlorite to paler micas; contains ankerite and rare siderite plus calcite veinlets and patches of pyrite (less than 1%) and rare thin milky quartz veins (1 cm to 3 cm width) with occasional associated visible gold;
Code 2: grayish to yellowish massive silica and sericite patches that are 1 cm to 10 cm in width and are controlled by small brittle shears or mylonitic zones;
Code 3: pervasively silicified rock with strong sericite, rare iron carbonate veinlets, local albite as disseminated crystals, and the complete destruction of chlorite.
Mineralization is characterized by an association of silica–albite–carbonate–white mica–pyrite alteration, quartz veining and brittle chlorite-filled fractures. Better gold mineralization is developed in quartz–calcite veins associated with pyrite grains that can vary from fine disseminations to 1.5 mm in size. Gold occurs as single grains 1–20 µm in diameter but also commonly occurs in clusters of grains from 5–10 µm. There does not appear to be an association of gold with either arsenopyrite or rutile, and the gold is generally silver-poor, with <5 ppm Ag.
Visible gold occurs in the veined cataclasite. Locally, 0.2–2.0 cm wide quartz veins can return assays with more than 32 g/t Au from coarse gold. In the oxide zone, gold is associated with coarse goethite pseudomorphs after euhedral pyrite. Gold grains in the oxidized zone range from 5–10 µm. Manganese oxides are also observed in oxide mineralization.
A cross-section through the Apensu deposit is provided as Figure 6-3.
The Apensu Deeps represents a series of steeply-dipping, structurally-controlled, high-grade shoots beneath the Apensu open pit, and the two areas share similar structural relationships and controls. Apensu Deeps has dimensions of 2.7 km x 200 m and is tested to about 1 km
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vertical depth. The Apensu Deeps area is subdivided into four zones, Apensu South, Apensu Gap, Apensu Main, and Apensu North (Figure 6-4). Mineralization remains open at depth in all zones, and to the north in Apensu North.
The deposits are hosted and aligned with the Kenyasi Fault and secondary splays and typically have moderate to steep dip towards the southeast. High-grade mineralization plunges vary from sub-vertical (Apensu South) to moderate southwesterly (Apensu Main and lower areas of Apensu North) to shallow southwesterly (upper areas of Apensu North).
Shear zone fabrics and fault geometries were inherited from early compressional deformation and include a strong cataclastic deformation of the hanging wall granitoids interpreted to be analogous to a crush breccia. Mineralized hanging wall splay faults are evident in the Apensu Main pit, and are well documented in drill core from Apensu Deeps. The intersection of these faults with the Kenyasi thrust appears to exert a primary control on the higher-grade ore-shoots as shown in Figure 6-4. The block model grades are used to highlight the structural controls and orientation of the higher-grade mineralization in that figure, with red representing grades >3 g/t Au.
The Apensu Gap area is different to the Apensu South and Apensu Main zones, as the area lacks the mafic unit that is associated with Apensu South, and the cataclasis is very weak. In this area, it appears that low-angle faults control and limit the extent of better grade gold mineralization.
Apensu North is developed in a structural jog repetition on the Kenyasi Fault beneath the Apensu Main deposit.
6.4.2    Awonsu
The Awonsu deposit, a Kenyasi-type deposit, developed on the sheared contact between mafic volcanic rocks, metasedimentary rocks and Dixcove granites. It is a continuation of the Amoma deposit, with the two mineralized zones separated by a zone of lower-grade, sub-economic mineralization.
The Awonsu deposit had horizontal dimensions of approximately 4,100 m x 150 m, and has been drill tested to 600 m vertical depth. The mineralization remains open at depth and towards the north along strike.
Footwall to the mineralization is a mixture of mafic volcanic and pelitic to turbiditic sedimentary units. The hanging wall is composed of granodiorite. Mixed mylonitic and cataclasite units and dilatant breccias, developed during plastic and ductile deformation occur in the sheared contact between the footwall and hanging wall.
Awonsu mineralization was typically more disseminated than that at Apensu. The shear zone varied in true width from 5–100 m, with gold mineralization >0.5 g/t Au ranging from 5–150 m in width.
Higher gold grades (>1.5 g/t Au) were hosted in, or immediately adjacent to, strongly-altered cataclasite, forming zones from 5–60 m in width. Grades >5 g/t Au were rare, but high-grade zones could be as much as 30 m wide. Gold grades of 0.5–1.5 g/t Au were more commonly developed in the fractured, moderately-altered hanging wall granodiorite.
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Figure 6-3:    Drill Section, Apensu Main and Apensu Deeps
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Note: Figure prepared by Newmont, 2021. Mixed zone = mineralized shear zone of the Kenyasi thrust. SA2-3 Alteration = sericite–albite alteration, with an intensity of 2 or 3; this alteration intensity is associated with mineralization. .
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Figure 6-4:    Drill Section, Apensu Deeps
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Note: Figure prepared by Newmont, 2021.
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Lower-grade material typically formed a halo of 2–50 m in thickness. Locally, particularly on the northern side of the deposit, higher-grade areas within the hanging wall alteration zone occurred in discontinuous mylonite zones, and in fine stringer quartz veins. A narrower low-grade halo, ranging in width from 5–30 m, occurred in the footwall. As with Apensu, higher-grade shoots were associated with a southward plunge. Typically, the shoots averaged about 2–5 g/t Au versus >5 g/t Au in Apensu.
Five structural domains were logged. The oldest is the Kenyasi Thrust Fault. Two hanging wall duplex splays off the thrust, Kenyasi Splay 1 Fault and Kenyasi Splay 2 Fault are characterized by locally anastomosing zones of mylonite in granodiorite. The Kenyasi Footwall Splay Fault is distinguished as a plastically deformed, locally anastomosing shear zone marked by graphite. The youngest structure is the cataclasite unit, which may be a later brittle sinistral re-activation of the Kenyasi Thrust Fault.
Alteration was similar to that described for the Apensu deposit but was typically less intense. Two additional codes were used at Awonsu, Alteration Codes 4 and 5, which differentiated areas of stockwork veining (Code 4) and milky sheeted veins (Code 5).
Awonsu is the only deposit within the Ahafo Operations where multiple generations of cross-cutting milky to opaque quartz veinlets with open-space filling of minor pyrite and gold mineralization were observed. Distinct, sheeted, sub-parallel milky quartz veins, 0.1–2 cm in width, with minor pyrite and occasional coarse gold, cross-cut fresh to weakly-altered hanging wall granodiorite. The milky veins generally occurred in sets of 2–10 veinlets that were separated by 10 cm to 1 m.
The general geology of the Awonsu area was shown in Figure 6-1. A cross-section through the deposit is provided as Figure 6-5.
6.4.3    Subika
The Subika deposit, to date the only example of Subika-style mineralization, developed in the hanging wall of the Kenyasi Thrust Fault but lies on a separate and parallel fault zone to the thrust fault complex that hosts the Kenyasi-style deposits.
The portion of the Subika deposit being exploited in the open pit has horizontal dimensions of approximately 2.2 km x 400 m, and is tested to about 800 m in vertical depth. The portion of the deposit being exploited from underground is the continuity of mineralization below the open pit. This portion of the deposit has horizontal dimensions of approximately 3.7 km x 400 m, and is tested to about 1,600 m in vertical depth. Subika mineralization remains open at depth and along strike.
Alteration is controlled by the 5–40 m wide “Magic Fracture Zone” (MFZ), a continuous zone of quartz–albite–sericite–carbonate–pyrite alteration.
Better grades of gold mineralization occur in dilatant zones (MFZ), ranging in width from 1–60 m. Hanging wall lower-grade mineralization tends to extend only about 30 m from the dilatant zones. Higher grade shoots within the dilatant zones plunge south at 20º to 70º. The high-grade zones appear to be controlled by dilatant left jogs in the MFZ created by offsets across the mylonite zones.
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Figure 6-5:    Cross-Section, Awonsu
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Note: Figure prepared by Newmont, 2021. Mixed zone = mineralized shear zone of the Kenyasi thrust. SA2-3 Alteration = sericite–albite alteration, with an intensity of 2 or 3, this alteration intensity is associated with mineralization. Chonolith = intrusive igneous rock mass of wholly irregular form.
Four granitoid subset lithologies are recognized: diorite, gabbro, microdiorite, and diorite–gabbro mixed. Aplite and pegmatite dikes cross-cut the granitoid material.
Four structural zones are defined:
The Victor Fault, on the southern end of the Subika deposit, is a major shear zone, 2–6 m wide, striking N60ºE, and dipping approximately 20–30º to the southeast. It locally anastomoses into three branches (Victor, Victor A, and Victor Lower Faults). It is cross-cut by dilatant breccias and brittle shears throughout, and displaces the Subika mineralization by as much as 40 m in an apparent left-lateral sense;
The Kaalbas Fault lies just oblique to the overlying Victor fault, with a slightly more easterly trend and shallower dip;
The Hatch Zone appears to be an anastomosing, almost east–west-trending structure, with two to three individual planes, each with 1 m to 3 m thickness developed within an overall 6–25 m wide structural zone. Mineralization appears to be displaced by about 50 m in the zone;
The Deep One shear is apparently confined to the northern end of the deposit.
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Alteration associated with the Subika deposit is chemically similar to that in the Kenyasi-style deposits.
Mineralization is hosted in the MFZ, which typically contains >2–5 g/t Au over widths of 5–50 m. Quartz and carbonate veinlets are common with thickness between 1–50 mm. They form stockworks in some instances and most of the veins are impregnated with pyrite, and in some cases display sparse visible gold at the contact with the host rock.
The general geology of the Subika area was shown in Figure 6-1. A cross-section through the open pit portion of the deposit is provided as Figure 6-6.
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Figure 6-6:    Cross-Section, Subika
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Note: Figure prepared by Newmont, 2021. SA1 Alteration = sericite–albite alteration, with an intensity of 1, represents low-grade halo; SA2-3 Alteration = sericite–albite alteration, with an intensity of 2 or three, associated with mineralization.
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7.0    EXPLORATION
7.1    Exploration
7.1.1    Grids and Surveys
The “Unified Ahafo Mine Grid” is used for the entire Project. This grid is based on the existing Ghana National Grid plus the addition of 1,000 m to the elevation in order to avoid negative elevations for mining purposes. All existing drill hole collar coordinates were recomputed to the Unified Ahafo Mine Grid.
The airborne survey used to construct the digital terrain model (DTM) for the Ahafo Operations was flown in 2004 before mining commenced. The topographic plans and DTM constructed from the survey have an accuracy of ± 1.1 m in x, y, and z directions.
7.1.2    Geological Mapping
Regional mapping was conducted at 1:50,000 scale to delineate areas of outcrop, alteration, faulting, and silicification that could act as additional vectors to mineralization and to support drill targeting.
All open pit and underground exposures are mapped as they become available, with emphasis on lithology, structural relationships and alteration, to help support folio development and understanding of key mineralization controls. These data are further applied to resource model development as well as exploration targeting.
Open pit mapping is performed at a scale of 1:3,000. An example of the mapping is provided in Figure 7-1
Underground mapping is done digitally by taking high-resolution overlapping photographs of the underground development walls and faces (taking into account the drive dimensions). These digital photographs are later stitched together to form panoramic images from which the structures, lithologies and alteration contacts are mapped in 3D Maptek Vulcan.
7.1.3    Geochemistry
Stream sediment sampling was used during the 1990s to vector into mineralized areas. There are no data on the numbers of samples taken, and many of these samples were taken outside the Ahafo Operations tenure area. Sample locations that are known are shown in Figure 7-2.
Soil sampling was primarily conducted in the 1990s and early 2000s. Over 50,000 samples were collected. Many of these samples were taken outside the current Ahafo Operations tenure area. Sample locations that are known are shown in Figure 7-3. Since 2017, deep-sensing geochemical samples have been collected (Figure 7-4). This is a proprietary Newmont technology that is applied in areas where there is no outcrop exposure due to extensive cover.
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Figure 7-1:    Pit Mapping
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Note: Figure prepared by Newmont, 2021.
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Figure 7-2:    Stream Sediment Sample Location Map
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Note: Figure prepared by Newmont, 2021.
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Figure 7-3:    Soil Sample Location Map
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Note: Figure prepared by Newmont, 2021.
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Figure 7-4:    Deep-Sensing Geochemical Sample Location Plan
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Note: Figure prepared by Newmont, 2021.
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Following the surveys, a “score” is applied to the area investigated, based on geological aspects of interest (e.g., lithology, alteration, mineralization). Collected data were processed to generate products for data integration and targeting.
Pits and trenches are excavated in areas highlighted as having anomalous assay results from soil sampling. The intent when pitting is to make contact with bedrock, or at least saprolite, for sampling and logging purposes. The initial cut is often to chest height for safety reasons. If additional depth is needed, then a safety layback is cut on at least one side of the trench. Samples are normally taken from the side or bottom of the trench on spacings of every 2 m or less as designated by the supervising geologist. A geological map of lithology, veins, structures, and alteration is made for each excavation before the excavation is backfilled.
7.1.4    Geophysics
7.1.4.1    Airborne Geophysics
Airborne geophysical surveys were conducted in 1994, 2005, 2007, 2016 and 2020 (Table 7-1; Figure 7-5). The surveys extend across the Ahafo district, and include areas outside of the Ahafo Operations area.
The high-resolution airborne surveys were useful in mapping the structures controlling mineralization in the Ahafo district on a detailed and refined scale. The data were used to enhance the existing geological interpretations over the area. Magnetic inversions performed using the datasets were useful in the generation of quality targets within the Ahafo district.
7.1.4.2    Ground Geophysics
Ground geophysical surveys were conducted from 1999–2020 (Table 7-1; Figure 7-6). The surveys extend across the Ahafo district, and include areas outside of the current Ahafo Operations area, either part of Ahafo North, or areas that Newmont no longer holds under mineral tenure.
Gradient array and pole–dipole IP/resistivity were identified as the most promising techniques. The resistivity data appeared to map silica alteration which tends to be closely associated with mineralization. Results of the semi-regional ground gravity survey indicate that the method may be a valid exploration tool for the Ahafo area. The main Ahafo deposits were located within gravity gradients.
7.1.5    Petrology, Mineralogy, and Research Studies
A number of structural, petrology, mineralogy, lithogeochemical, and research studies have been completed in the Ahafo Operations area since 1991. An MSc. thesis was completed on the structural evolution of the Subika deposit in 2011 by Emmanuel Baah-Danso. A PhD thesis completed in 2017 by Helen MacFarlane on the Sefwi Belt included some information from Newmont’s Ahafo exploration databases.
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Table 7-1:    Geophysical Surveys
Survey TypeDateOperatorNote
Airborne2004Gencor
Focused on western contact of the Sefwi belt with the Sunyani basin, where the contact fell within the Project area. 200 m line spacing; total area of about 1,450 km2.
2005Fugro Airborne Surveys
100 m line spacing, for 1,124 line-km; covered 96.9 km2 of Ahafo central.
2007Fugro Airborne Surveys
Airborne magnetic survey (Midas). Altitude of 40 m at 100 m line separations. Total 3,940 line-km; survey area covered 349.6 km2.
2016GeoTech Surveys
Airborne magnetic survey. 56 m altitude at 100 m line separations. Total 4,182 line-km; survey area covered 380 km2.
2020Bell Geospace
Airborne gravity gradiometry survey. 60 m altitude at 200 m line separations. Total 7,806 line-km; survey area covered 466 km2.
Ground1999SJ GeophysicsInduced polarization (IP)/resistivity surveys on the Ntotroso License. Dipole-dipole spacings were 50 m, and the very low frequency (VLF) survey was at 25 m spacings. The company also completed a ground magnetics survey (10 m spacings) over the Subika and Area F prospects.
2003NewmontIP/resistivity (gradient array on 25 x 50 m stations; pole-dipole and dipole-dipole on 50 m centers), total domain electromagnetics (TDEM), ground magnetics (5 x 50 m stations) and ground gravity (50 x 50 m stations) on the Yamfo South and Subenso deposits in Ahafo North.
2004–2008Ahafo North and Ahafo South. Typically pole–dipole IP data were collected on 50 m centers, whereas the gravity array was on 25 x 50 m spacings. Ground magnetics data (5 x 50 m stations) also routinely collected
2006Orientation gravity survey
2006–2008Semi-regional ground gravity survey trialed at Ahafo
2009–2014Offset pole–dipole IP survey data were collected at Subika. Two lines of transient electromagnetic (TEM) data completed at Amoma. Ground magnetic surveys conducted at Mampehia prospect
2016-2020IP/resistivity (gradient array on 25 x 50 m stations; pole-dipole 50 m separation) conducted on Subika, Tanoso, Mankraho, Nanapfo, Mampehia and Mehame.
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Figure 7-5:    Airborne Geophysical Survey Location Plan
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Note: Figure prepared by Newmont, 2021.
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Figure 7-6:    Ground Geophysical Survey Location Plan
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Note: Figure prepared by Newmont, 2021.
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7.1.6    Qualified Person’s Interpretation of the Exploration Information
The Ahafo Operations are a mature site, and the initial exploration information collected using geochemical and geophysical methods is superseded by drill and mining data. The exploration information was used to successfully vector into areas of gold anomalism that were able to support mineral resource estimation and subsequent open pit and underground mining operations.
7.1.7    Exploration Potential
Within the immediate mining area, exploration potential includes the following:
Subika: testing for extensions of the mineralization to the northeast, and down plunge of the currently-defined limits of the deposit;
Apensu: drill testing of the northern strike and plunge extensions to the Apensu North mineralized shoot and Gap area depth potential.
Subika-Apensu: potential mineralization along the deep linking structures between Subika Underground and Apensu Deeps;
Awonsu: potential mineralization extents below the existing pit.
Near-mine exploration is planned to include:
Evaluating structurally-favorable zones and potential repetitions along and down-plunge of the Kenyasi Thrust between the Apensu South and Awonsu deposits;
Testing down plunge depth extensions to Subika;
Amoma: potential for mineralization extensions below the existing pit.
Drill testing of Subika structures and adjacent parallel fault trends defined by aeromagnetic, gradient array resistivity, 3D gravity models, geochemical datasets, and projections of the important, secondary, shallow-angle, low permeability faults which focus mineralization;
Drill testing previously-identified geochemical and geophysical anomalies where these are potentially within trucking distance of the Ahafo process plant.
7.2    Drilling
7.2.1    Overview
7.2.1.1    Drilling on Property
A total of 12,902 drill holes (approximately 1.8 Mm) was completed within the Ahafo Operations area to December 31, 2021, including 4,792 core holes (1,321,915 m), 3,597 RC holes drill holes (234,566 m), 1,475 RC pre-collar/core tail holes (207,837 m), and 1,154 aircore drill holes (34,393 m). Drilling is summarized in Table 7-2. Drilling for areas that have current mineral resource estimates are summarized in Table 7-3.
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Table 7-2:    Drill Summary Table
Drill TypeNumber of Drill HolesMeters Drilled
(m)
Aircore1,15434,393
RC3,594234,366
Core4,7921,321,915
RC/core tail1,475207,837
RAB1,88730,922
12,9021,829,433
Note: Table excludes grade control drilling. Metreage has been rounded; totals may not sum due to rounding.
Table 7-3:    Drilling Supporting Mineral Resource Estimation
DepositDrill TypeNumber of
Drill Holes
Meters Drilled
(m)
Apensu, Apensu SouthCore1,004366,017
RC/core tail18940,411
RC42922,473
Subtotal1,622428,900
AwonsuCore538111,779
RC/core tail20438,313
RC34126,435
Subtotal1,083176,526
Subika, Subika UndergroundCore2,921799,199
RC/core tail213112,426
RC23229,722
Subtotal3,366941,347
Totals6,0711,546,773
Note: Subika total includes grade control drill holes. Metreage has been rounded; totals may not sum due to rounding.
A Project-wide drill collar location plan is provided in Figure 7-7 for the core and RC drilling, and Figure 7-8 shows the aircore drilling completed.
Between 1992 and 2002, drilling was completed primarily for early-stage, exploration-focused programs and for initial resource estimates. From 2002, drilling was used to support advanced-stage project evaluation, deposit, pit and underground delineation.
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Figure 7-7:    Drill Collar Location Plan (Core and RC)
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Note: Figure prepared by Newmont, 2021.
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Figure 7-8:    Drill Collar Location Map (Aircore)
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Note: Figure prepared by Newmont, 2021.
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7.2.1.2    Drilling Excluded For Estimation Purposes
RAB and aircore drilling are not used to support estimation of either mineral resources or mineral reserves.
In addition, drill holes with failed quality control checks for data such as down hole survey, collar, and assays are excluded from the final data extraction used for resource/reserve estimation.
7.2.2    Drill Methods
Aircore drilling was primarily used as a first-pass evaluation tool of soil sample anomalies to bedrock. Drilling was completed by multiple contractors during Normandy’s tenure, all of which used aircore-only drill rigs. The primary drill contractor for the aircore programs completed by Newmont was African Mining Services (AMS), who used an ED100-type drill rig.
RC drilling was used as a resource delineation tool from 1995 to 2012. Drill contractors included Boart Longyear (BLY), AMS, and Geodrill. The drilling firms used both dedicated RC and multipurpose-type drill rigs, including ED703, ED704, ED045, ED062, KL900, KL200, and LF4252 rig types.
Core drilling is used to support resource estimates, and to infill in areas of predominantly RC drilling. Core drilling was completed in phases, from 1995 to the Report date. Drill holes classified as core-drilled include both RC pre-collared holes and those wholly drilled as cores.
7.2.3    Logging
Aircore drill hole logging included lithologies, alteration, oxidation states, and presence of aquifers.
Geological logging of RC drill data included lithology, alteration state, oxidation, and presence of water. Logging used pre-set codes. Drill chips were logged at the drill site, and a chip tray record of each 1 m interval retained for reference.
Detailed geological logging is carried out on all core holes, and focuses on descriptions and graphical logging of geological relationships, characteristics and mineralization. Lithology, alteration, veining, sulfide content, oxidation type and structural information are consistently captured digitally using a tablet personal computer via Visual Logger application and loaded to a global exploration database (GED) for storage. The Visual Logger application contains the standard geologic codes for the logging.
The senior project geologist for a particular project performs a minimum of 20% quality checks on all geological logging and documents the findings.
Historically, geotechnical logging of core was performed on selected drill holes from infill drilling programs to capture core recovery and rock quality designation (RQD). The selected interval for geotechnical logging was largely dependent on the observed geotechnical features. This practice was replaced by performing the geotechnical logging run by run or block to block for the entire length the hole and for all the drilled holes. Geologists log core recovery, RQD, joint condition rating, fracture frequency and strength. Information captured using Visual Logger and loaded into the GED. More specialized geotechnical logging is done by geotechnical engineers for the holes drilled specifically for geotechnical purposes.
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7.2.4    Recovery
Recovery was not usually recorded for the aircore drill programs but is typically very high.
Except for the first few meters of individual RC holes, where recovery is typically in the 20–40% range, recovery is generally about 95–98%.
Core recovery is normally 100%, except for very rare times when faults and/or graphitic shear zones are encountered. The mineralized zone, which is silicified and brecciated, is a solid rock and recovery is almost always 100% in mineralization.
7.2.5    Collar Surveys
Aircore drill hole collars were located by the survey department and verified by geology personnel.
Collars of drill holes completed prior to 2005 were surveyed by surveyors, using optical instruments and in the local mine grid coordinate system. In September 2006, Newmont transformed all the spatial data at the Ahafo Operations to a common and unified survey grid based on the projection of the Ghana National Grid. A vertical offset was added to elevations referenced to mean sea level to avoid negative values. The unified grid was called the Ahafo Unified Ghanaian National Grid. Collars of drill holes completed afterwards were surveyed by Newmont surveyors, using global positioning system (GPS) equipment and in the Ahafo Unified Ghanaian National Grid coordinate system. Data are electronically sent to the database manager.
7.2.6    Down Hole Surveys
Aircore drill holes were not down-hole surveyed. A Welnav downhole survey camera was used for RC drill holes. Core hole downhole surveys were performed with a variety of instruments, including multi-shot Sperry-Sun, Welnav, Reflex EZ-Shot and Reflex Multishot tools. All surveys were performed by the drilling company, then checked and approved by geological staff.
Magnetic declinations are adjusted for drift. The declination factor is subtracted from the magnetic reading provided by the drilling services contractor.
Quality control is completed for 5% of the holes drilled.
7.2.7    Grade Control
Newmont currently employs 10 Drilltech D45 blast hole rigs, which drill 9.5 m vertical blast holes (i.e., 8 m bench plus 1.2 m sub-drill) for grade control sampling in fresh rock. The sub-drill is not sampled for grade control purposes. Blasthole spacing is at approximately 4 m x 4.5 m spacing in both ore and waste zones.
7.2.8    Comment on Material Results and Interpretation
Drill holes are oriented with an inclination ranging from -45º to -88º for surface holes and -74º to -32º for underground holes to accommodate the steeply-dipping nature (typically -55º to -75º) of the Ahafo Operations deposits, resulting in an intersection generally representing 75–85% of
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true width. Drilling is generally orientated perpendicular (300–330º) to the strike of the orebodies (040º –050º) for surface drill holes. Underground drill holes are typically collared from the footwall into the hanging wall of the orebody, the opposite direction to the surface drill holes.
Local variation in drill orientations may be present to accommodate infrastructure constraints.
7.3    Hydrogeology
Water quality monitoring done on site is based on a monitoring plan developed to guide ongoing sampling and analysis of process fluid including groundwater and surface water collected in conjunction with Newmont’s water resources monitoring program to meet operational needs and environmental protection requirements. Sampling conducted under this plan is performed by Newmont personnel and/or contractors under the direction of Newmont staff. Monitoring data are used to quantify water quality such that any mine-related impacts to the environment can be determined and, if necessary, mitigated.
7.3.1    Sampling Methods and Laboratory Determinations
Surface and ground water monitoring routinely conducted, with sample intervals, depending on what is being monitored, that can be daily, weekly, monthly, quarterly, or annual. Samples of surface water are analyzed in the field using hand-held instruments for the following parameters: pH, specific conductivity, dissolved oxygen, water temperature, and turbidity. The color of the water is also recorded on the field form.
Community water supply wells are sampled using existing well pumps. Field parameters including pH, SC, temperature, dissolved oxygen, and turbidity are collected.
Standpipes and vibrating wire piezometers (VWPs) are installed in the perimeter of the pits to monitor groundwater levels and pore pressures for the purpose of slope stability.
Stream flow at designated stations is measured using a current meter (electromagnetic, and/or equivalent-type).
Water sample analyses are conducted by SGS or the mine site laboratory. SGS is an accredited environmental laboratory in Ghana and appropriate certifications for chemical analysis of hydrological samples. The Newmont mine laboratory is used for selected analyses, such as physical parameters, microbiology and particular nutrients.
Full suite parameters, such as nutrients and other chemicals, total and dissolved metals are assayed at one of SGS, ALS, or Intertek in Ghana. These laboratories may be used to analyze split samples as part of the QC process. All laboratories use designated analytical methods or a comparable method, and meet specific QC requirements. The laboratories hold ISO17025 accreditations for selected chemical analytical techniques.
Laboratory analytical methods used are based on the most recent edition of the American Public Health Association’s (APHA) “Standard Methods for the Examination of Water and Wastewater”, and standards from the International Standards Organization.
Quality assurance and quality control (QA/QC) measures can include:
Ensuring sites selected are representative;
Reviewing field forms for adherence to proper calibration and sample collection procedures
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Achieving completeness goals of 90%, where completeness is calculated as the number of valid measurements divided by the total number of planned measurements, expressed as a percentage;
Inserting field duplicates, laboratory duplicates, matrix spike duplicates, or laboratory control sample duplicates;
Inserting field blanks, matrix spikes, laboratory control samples, and surrogate spikes
Using USEPA-accepted analytical methods, where available and as appropriate;
Checking the comparability of data collected.
7.3.2    Groundwater Models
A groundwater model was developed in 2016 by Golder Associates for the Ahafo Operations, primarily to support the open pit mines and the planned Subika underground mine. Evaluations of the potential to also underground mine adjacent to the Apensu open pit required updates to the groundwater model.
The existing FEFLOW-hosted Ahafo regional groundwater flow model was recalibrated to better represent the inflows and groundwater levels monitored in proximity of the various mines. The 2015–2016 model assumptions resulted in higher predicted groundwater inflows to the underground mine than that recorded over the 2017–2019 period, and consequently the associated drawdown cones predicted were larger than those measured based on available borehole water levels. As a result, the hydraulic conductivities assigned to the saprock, fractured and fresh bedrock zones were reduced. Lower hydraulic conductivity values and lower groundwater ingress rates were modeled to match the data collected, and the cone of depression extent was reduced.
7.3.3    Water Balance
The Ahafo Operations site-wide GoldSim model has been in use for over a decade as an operational support and long-term planning tool for mine water management at the operations. Calibration of the model is performed at least once annually through the collation and entry into the model of empirical monitoring/operational reporting data spanning a minimum of 12 months prior to the date of each calibration exercise.
Data inputs used in the calibration process included mined tonnages, mill throughput, pit dewatering rates, tailings densities, TSF reclaim rates and other factors that are likely to influence the physical water balance. Deterministic model simulations were then performed, with results relating to flows and/or storage inventories compared against measured values at key calibration locations across the model domain.
Updates of the GoldSim site-wide water balance model for Ahafo was completed during Q3 of 2020 and included Ahafo’s 2021 mine plan and production schedule. Historical and projected inflows to the Subika Underground as defined by 2020 numerical groundwater modelling were incorporated into the GoldSim model.
In parallel with the model update and calibration process completed in Q3 2020, the GoldSim model was used to support investigations performed under the Ahafo Site Water Management Study, primarily on the LOM dewatering strategy around the Apensu pit, and the decision on the
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need for and timing of additional treatment capacity, and the requirement of an impacted water pond.
7.3.4    Comment on Results
To the Report date, the hydrogeological data collection programs have provided data suitable for use in the mining operations, and have supported the assumptions used in the active pits and underground operations.
7.4    Geotechnical
The following general information are collected for geotechnical assessment of both open pit and underground excavations:
Rockmass classification and characterization data to estimate the rock quality;
Structural data to determine potential structural-controlled failures;
Damage mapping data to determine stress-related failures.
7.4.1    Sampling Methods and Laboratory Determinations
Rock mass (laboratory testing) and hydrogeology data are used for structural characterizations to support pit walls. Examples of tests done to determine the mechanical properties of rocks are tensile strength, uniaxial compressive strength, and triaxial compressive tests.
Core samples are sent to a laboratory for various geotechnical purposes such as determining the mechanical properties of the rock and estimating stress field of the rock. Core samples are selected for laboratory purposes, and are based information such as the core integrity, core quality, and geological variability. The samples are carefully selected at different depths with sample lengths based on the International Society for Rock Mechanics’ recommendation of 2.5–3 times sample diameter for elastic property testing. Current testing facilities include Rocklab in Pretoria, South Africa; E-Precision, Bibra Lake, Western Australia; and the West Australian School of Mines in Kalgoorlie, Western Australia. The laboratories are independent of Newmont. There are no internationally recognized accreditations for geotechnical techniques.
Sample selection for acoustic emission (AE) technique and deformation rate analysis (DRA) stress measurement tests is based on varying sample depths specified. Generally, samples are be selected from about 150 m below surface and sample depth ranges are approximately 200 m apart. Core samples selected for AE/DRA testwork have minimal fracture breaks and the orientation marks/line are be checked for consistency. Core samples for laboratory testing are wrapped with clean cloth and placed in either wooden or metal boxes that are lined with visco-elastic foam to minimized disturbances during shipment.
Scanline and window mapping techniques are used to characterize the various discontinuity sets within the rock mass, which aids in defining potential failure modes likely to occur in the stope and pit walls. Several aspects such as rock mass condition, stope geometry, structural fabric, stress conditions, etc. are considered during stope designs.
Run-of-mine (ROM) waste rock is used as fill material in the underground excavations. The suitability of the fill material is determined via the mechanical properties of the rock and
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fragmentation analysis to define material granularity and appropriateness. The fragmentation analysis is conducted by a qualified backfill engineer.
Blasts are measured with a geophone system to quantify the effect of vibrations into the rock mass. There are prism arrays on the pit walls to measure slope displacements. Radars are also employed to monitor slope movements in real time. A micro-seismic monitoring system is used for monitoring seismic activities in the rock mass. Extensometers are used for displacement monitoring of some selected underground excavations.
A fall-of-ground register is maintained for all rock events, which provides brief summary of sequence and nature of the rock event.
7.4.2    Comment on Results
The geological hard rock setting at the Ahafo Operations is well understood and displays reasonable consistency in the various open pits located on site. Additional testing continues to confirm the consistency of material strengths and parameters.
To the Report date, the geotechnical data collection programs have provided data suitable for use in the mining operations, and have supported the assumptions used in the active pits and underground operations. The geotechnical testwork and monitoring is used in the pit and underground designs that are discussed in Chapter 13.
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8.0    SAMPLE PREPARATION, ANALYSES, AND SECURITY
8.1    Sampling Methods
BLEG samples were collected from suitable drainages, as 2–5 kg samples, and placed in pre-numbered calico bags. The sample location was recorded, typically on aerial photographs.
Soil samples were collected as 2 kg samples from 15–20 cm depths in the soil profile, a description recorded, then samples were placed in a pre-numbered calico bag.
Rock chip samples were typically collected as 2–5 kg of grab samples from surface outcrops. Sample locations were recorded, together with a geological description.
Trench and pit samples were normally collected from the side or bottom of the trench on about 2 m spacings, or as designated by the supervising geologist. Samples ranged from 2–5 kg, and each sample position was recorded with a geological description.
Aircore drill samples were typically taken on 2 m intervals down hole.
RC samples were generally taken on 1 m intervals down hole, split using a Gilson riffle splitter, with quarter samples collected in pre-numbered RC sample bags.
Core was cut along marked orientation lines, using a diamond saw. Sample lengths varied from 0.2–1.5 m, with sample intervals selected based on the geological features of the core, including alteration.
8.2    Sample Security Methods
Sample collection, preparation, and transportation have always been performed by Newmont personnel using Newmont vehicles, or by the relevant commercial laboratory vehicle. Chain-of-custody procedures consist of sample submittal forms sent to the laboratory with sample shipments to make certain that all samples are received by the laboratory.
8.3    Density Determinations
Newmont’s protocols for specific gravity (SG) determination require that a minimum of 30 SG samples per material type (domain) are collected at the initiation stage and identification stage of any project. For more advanced projects, SG samples are typically collected at approximately 10–20 m intervals.
SG determinations were completed by the Normandy-operated Ahafo Mobile Sample Preparation Unit (MSPU) and the SGS laboratory in Tarkwa (SGS Tarkwa). Currently, determinations are performed onsite by Newmont technicians. In all cases, SG values were measured by water displacement methods. Values range from 1.76 in saprolitic material to 2.79 in fresh rock.
Quality control (QC) measurements are performed on a minimum of 5% of samples by an independent external laboratory; currently either SGS Ahafo or ALS Kumasi. Quality assurance and quality control (QA/QC) measurements are validated by Newmont senior geological staff.
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8.4    Analytical and Test Laboratories
A number of independent laboratories have been used since 1993.
During the Normandy operating period, the primary laboratories were Transworld Laboratories, in Tarkwa, Ghana, and SGS Kumasi and SGS Tarkwa.
Newmont used UltraTrace Laboratory Pty Ltd (UltraTrace) for BLEG geochemical sampling.
Umpire laboratories used include ALS Vancouver in Canada, Gencor Laboratories, in Johannesburg, South Africa (Gencor); Inchcape Laboratory in Obuasi, Ghana (Inchcape); Genalysis Laboratories in Perth, Australia (Genalysis); Anglo-American Research Laboratories in Johannesburg (AARL); Omac Laboratories in Ireland (Omac); and Performance Laboratories in Johannesburg (Performance).
SGS Tarkwa was the primary laboratory for all drill programs for the period June 2003 to 2010. In addition to SGS, ALS Chemex (ALS) has provided laboratory services to Newmont Ghana from 2010 to date, and has used branch laboratories in various locations, including ALS Kumasi, ALS Vancouver and ALS Johannesburg.
Both SGS and ALS are independent laboratory groups that operate globally, and the SGS/ALS laboratories used for the Project are accredited to ISO/IEC17025 for selected sample preparation and analytical techniques. Currently SGS Ahafo is the primary laboratory used for the Ahafo deposits.
The on-site mine laboratory, SGS Ahafo, is managed by SGS and is used to prepare and analyze grade control, and metallurgical samples. It can also be used as the sample preparation facility for exploration/development drill holes; there is a separate sample preparation site that has dedicated equipment and is only used to process exploration samples. The on-site mine laboratory holds ISO/IEC17025 accreditation for selected sample preparation and analytical techniques.
8.5    Sample Preparation
Sample preparation methods for the various major sampling types is summarized in Table 8-1.
8.6    Analysis
The following analytical methods have been used:
Au by fire assay and atomic absorption spectroscopy (AAS);
Multi-element Ag, As, Bi, Ca, Cd, Cu, Fe, Hg, In, Mn, Mo, Ni, Pb, Sb, Te, Tl, U, W, Y, and Zn; aqua regia digest followed by ICP-MS finish;
S and C analysis via LECO.
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Table 8-1:    Sample Preparation Procedures
LaboratorySample TypePreparation Procedure
Newmont, UltraTraceStream sedimentNone required
ALS KumasiSoilDried, crushed to nominal 90% passing -2 mm, pulverized to 90% passing -75 µm
SGS Ahafo, ALS KumasiRock chip; pit/trench; aircore; RC
Dried, crushed to nominal 90% passing -3 mm, pulverized to nominal 90% passing -75 µm
SGS Ahafo, ALS KumasiCoreDried, crushed to nominal 90% passing -2 mm, pulverized to 90% passing -75 µm
8.7    Quality Assurance and Quality Control
Newmont has considerably modified the QA/QC program at Ahafo from that used prior to 2004. Newmont maintains a QA/QC program for the Ahafo Operations. This includes regular submissions of blank, duplicate and standard reference materials (standards) in samples sent for analysis.
Results are regularly monitored. Standard results indicate that assays from each of the laboratories, Newmont’s internal mine laboratory, SGS Ahafo, ALS Kumasi, are sufficiently accurate to support mineral resource and mineral reserve estimation and mine planning. In early programs, the number of outliers was on the high side; however, after investigation, the majority of the issues were found to be caused by mislabeling and sample swapping. Sample labelling and handling procedures were improved during 2012, reducing the number of failed standards in later campaigns.
Blank results indicate that contamination is not a significant concern.
Data for field, preparation and pulp duplicate types indicates that the data are acceptably precise at the primary laboratories. The number of failures due to mixed and mislabeled samples was a concern in early programs; however, procedures for inserting and tracking duplicate samples were significantly upgraded.
Approximately 5% of pulp samples analyzed at the primary laboratory were routinely submitted to an umpire laboratory. Umpire laboratory results typically compare well with the original assay results, with the precision and bias within acceptable quality ranges.
8.8    Database
All drilling-related data are stored on a Microsoft SQL server engine which supports multi-user access. Assays, downhole surveys, and collar surveys are stored in the same file as the geologic logging information. In addition, sample preparation and laboratory assay protocols from the laboratories are kept on file. The database is administered by a dedicated database manager. Security and access to the database is achieved through Microsoft Windows server technology authentication and file permissions. These are administered by the onsite Information Technology department.
All historic paper records are filed in a manner that allows for quick location and retrieval of any information desired.
Digital data are regularly backed up. Copies of the digital database are securely stored offsite.
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8.9    Qualified Person’s Opinion on Sample Preparation, Security, and Analytical Procedures
The sample preparation, analysis, quality control, and security procedures used by the Ahafo Operations have changed over time to meet evolving industry practices. Practices at the time the information was collected were industry-standard, and frequently were industry-leading practices.
The Qualified Person is of the opinion that the sample preparation, analysis, quality control, and security procedures are sufficient to provide reliable data to support estimation of mineral resources and mineral reserves:
Drill collar data are typically verified prior to data entry into the database, by checking the drilled collar position against the planned collar position;
The sampling methods are acceptable, meet industry-standard practice, and are adequate for mineral resource and mineral reserves estimation and mine planning purposes;
The density determination procedure is consistent with industry-standard procedures. A check of the density values for lithologies across the different deposits indicates that there are no major variations in the density results;
The quality of the analytical data is reliable, and that sample preparation, analysis, and security are generally performed in accordance with exploration best practices and industry standards;
Newmont has used a QA/QC program comprising blank, standard and duplicate samples. Newmont’s QA/QC submission rate meets industry-accepted standards of insertion rates;
Verification is performed on all digitally-collected data on upload to the main database, and includes checks on surveys, collar co-ordinates, lithology, and assay data. The checks are appropriate, and consistent with industry standards.
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9.0    DATA VERIFICATION
9.1    Internal Data Verification
9.1.1    Data Validation
Newmont personnel regularly visit the laboratories that process Newmont samples to inspect sample preparation and analytical procedures. Observations not in conformity with Newmont procedures are recorded in Project files and communicated to the appropriate laboratory for corrective action to be taken.
The database is checked using electronic data scripts and triggers (see discussion in Chapter 8.8).
Newmont has conducted a number of internal data verification programs since 2002, which included the following reviews:
Logging consistency, down hole survey, collar coordinate and assay QA/QC data;
Geological procedures, resource models and drill plans;
Sampling protocols, flow sheets and data storage;
Check assay program results;
SG data.
9.1.2    Reviews and Audits
Newmont conducts internal audits, termed Reserve and Resource Review or 3R audits, of all its operations. These audits focus on:
Reserves processes: geology and data collection; resource modelling; geotechnical; mine engineering (long term) for open pit and underground operations; mineral processing (development); sustainability and external relations; financial model;
Operations process: ore control; geotechnical and hydrogeology (operational); mine engineering (operational) for open pit and underground operations; mineral processing (operational); reconciliation.
The reviews assess these areas in terms of risks to the contained metal content of the mineral resource and mineral reserve estimates, or opportunities to add to the estimated contained metal content. Findings are by definition areas of incorrect or inappropriate application of methodology or areas of non-compliance to the relevant internal Newmont standard (e.g., such as documents setting out the standards that are expected for aspects of technical services, environmental, sustainability and governmental relations) or areas which are materially inconsistent with published Newmont guidelines (e.g., such as guidelines setting out the protocols and expectations for mineral resource and mineral reserve estimation and classification, mine engineering, geotechnical, mineral processing, and social and sustainability). The operation under review is expected to address findings based on the level of criticality assigned to each finding.
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Ahafo Operations 3R audits were conducted in 2012, 2014, 2016, 2018, and 2020. Earlier audits, known as Five Star reviews, were undertaken in 2005 and 2006.
The 2020 3R audit found that the Ahafo Operations were generally adhering to Newmont’s internal standards and guidelines with respect to the estimation of mineral resources and mineral reserves. The review team identified no material issues with the mineral resource and mineral reserve estimation processes. The team made a number of recommendations for site-based improvements; however, none of these recommendations were considered critical to implement. Recommendations included suggestions for improvement in the modelling process, review of site-wide cut-off grade strategies, and review of contact water management.
9.1.3    Mineral Resource and Mineral Reserve Estimates
Newmont established a system of “layered responsibility” for documenting the information supporting the mineral resource and mineral reserve estimates, describing the methods used, and ensuring the validity of the estimates. The concept of a system of “layered responsibility” is that individuals at each level within the organization assume responsibility, through a sign-off or certification process, for the work relating to preparation of mineral resource and mineral reserve estimates that they are most actively involved in. Mineral reserve and mineral resource estimates are prepared and certified by QPs at the mine site level, and are subsequently reviewed by QPs in the Newmont-designated “region”, and finally by corporate QPs based in Newmont’s Denver head office.
9.1.4    Reconciliation
Newmont staff perform a number of internal studies and reports in support of mineral resource and mineral reserve estimation for the various Ahafo Operations mines. These include reconciliation studies, mineability and dilution evaluations, investigations of grade discrepancies between model assumptions and probe data, drill hole density evaluations, long-range plan reviews, and mining studies to meet internal financing criteria for project advancement.
9.1.5    Subject Matter Expert Reviews
The QP requested that information, conclusions, and recommendations presented in the body of this Report be reviewed by Newmont experts or experts retained by Newmont in each discipline area as a further level of data verification.
Peer reviewers were requested to cross-check numerical data, flag any data omissions or errors identified, review the manner in which the data were summarized and reported in the technical report summary, and check the interpretations arising from the data as presented in the Report. Reviewers were also asked to check that the QP’s opinions stated as required in certain Report chapters were supported by the data and by Newmont’s future intentions and Project planning.
Feedback from the subject matter experts was incorporated into the Report as required.
9.2    External Data Verification
Data verification by external consultants in support of mine development and operations is summarized in Table 9-1. No material issues were identified in the reviews.
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Table 9-1:    External Data Verification
YearCompanyNote
2003AMEC Americas LtdAudited database
2014Optiro Pty LtdReview of Subika resource model
2016AMEC Americas LtdReview of resource models; geology and data collection; mineral resource estimates; mineral reserve estimates; mine planning; geotechnical data (mining, infrastructure); metallurgy and mineral processing; financial analysis
9.3    Data Verification by Qualified Person
The QP performed site visits as discussed in Chapter 2.4. Observations made during the visits, in conjunction with discussions with site-based technical staff also support the geological interpretations, and analytical and database quality. The QP’s personal inspection supports the use of the data in mineral resource and mineral reserve estimation, and in mine planning.
The QP participated in the 3R audit in 2018, with responsibilities as the reviewing mining engineer and the audit team lead.
The QP receives and reviews monthly reconciliation reports from the mine site. These reports include the industry standard reconciliation factors for tonnage, grade and metal; F1 (reserve model compared to ore control model), F2 (mine delivered compared to mill received) and F3 (F1 x F2) along with other measures such as compliance of actual production to mine plan and polygon mining accuracy. The reconciliation factors are recorded monthly and reported in a quarterly control document. Through the review of these reconciliation factors the QP is able to ascertain the quality and accuracy of the data and its suitability for use in the assumptions underlying the mineral resource and mineral reserve estimates.
9.4    Qualified Person’s Opinion on Data Adequacy
Data that were verified on upload to the database, checked using the layered responsibility protocols, and reviewed by subject matter experts, are acceptable for use in mineral resource and mineral reserve estimation.
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10.0    MINERAL PROCESSING AND METALLURGICAL TESTING
10.1    Introduction
Metallurgical testwork was conducted at Newmont Metallurgical Services and Hazen Research under the direction of Newmont personnel. An earlier phase of testwork in 2000 was completed under the direction of and interpreted by Lycopodium Pty Ltd.
Each year, samples are selected to represent the next three years of production in mine-to-mill testing, to ensure there sufficient current testwork to support knowledge of the mill feed materials, and support process assumptions.
10.2    Test Laboratories
Newmont Metallurgical Services is an in-house metallurgical testing and research and development laboratory. Hazen Research is an independent commercial metallurgical testing facility. There is no international standard of accreditation provided for metallurgical testing laboratories or metallurgical testing techniques.
10.3    Metallurgical Testwork
Work completed included mineralogy, chemical analysis; leaching; leach characterization (as well as determination of cyanide and lime consumptions); comminution characterization for various grind sizes; Bond rod and ball mill work indices, abrasion indices and JKTech drop weight comminution parameters; grindability work; heap leach testwork; gravity concentration tests; determination of thickening and slurry pumping characteristics; rheology; tailing characterization and tailings geochemical tests; and oxygen addition. These tests were used to design the plant, which commenced operations in 2006, and support ongoing plant operations.
Results from the test work program prior to 2006 were used to develop equations to forecast throughput, recovery and cost for each ore type. The throughput, recovery and cost models have subsequently been validated and updated using results of mine-to-mill test work conducted after plant startup, and the actual process plant throughput and recovery performance.
In 2019, mine-to-mill testing was performed to characterize the material that would be treated in 2022–2024.
The current mineral reserve and mineral resource metallurgical recovery assumptions have not changed significantly since plant start-up. Recoveries for two deposits, Subika open pit and Awonsu pit phases 3 and 4, were updated in the 2019 Ahafo mine-to-mill metallurgical study. The mine plan recovery functions include allowances for gold losses due to solution and carbon losses to allow for more accurate recovery projections. The current mine plan recovery functions include a 4.5% recovery upscale factor for all deposits other than Apensu Deeps, as operational results consistently exceed laboratory recovery estimates by 4.5%. The reason for the difference (scale-up) is due to the difference in particle size distributions generated in a laboratory mill versus an operational mill (a finer distribution is generated during operations, which leads to enhanced recoveries).
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In the case of Apensu Deeps, which is under evaluation, testwork focused on using the current Ahafo metallurgical plant to treat the material. Drop weight and abrasion indices are generally higher than for the Apensu open pit material, and the Bond ball mill work index is similar. It was discovered that un-leached gold in the high-grade material is predominantly locked in pyrite, resulting in a lower recovery. Test results indicated that a finer grind of the high-grade material will improve recovery rates significantly. Additional tests are planned.
The Ahafo Mill Expansion (AME; also referred to as Line 2) was commissioned in September 2019. It entails a separate crushing/grinding circuit, and three additional leach tanks and tailings pumps. Line 2 is adding approximately 50% more capacity to the Ahafo processing plant. The Line 2 design throughput rate is 400t/hr, which is currently been achieved.
10.4    Recovery Estimates
The feed to the plant is currently both primary and oxide ore. Based on the life of mine plan, it is expected that the remaining 202 kt of stockpiled oxide ore will be processed in 2022. Average throughput projection is 9.5Mt per annum from 2022 to the end of mine life.
Recovery models were derived at a grind size of P80 106 µm, based on actual testwork conducted at current plant conditions, for the various deposits. These equations were used to determine the block by block recovery and the individual blocks recoveries were coded into the model for floating pit shells. Stockpiled material is tracked by pit source and is assigned the same metallurgical recovery as the deposit it is sourced from.
Forecast recoveries for the LOM are provided in Table 10-1.
10.5    Metallurgical Variability
Samples selected for metallurgical testing during feasibility and development studies were representative of the various styles of mineralization within the different deposits. Samples were selected from a range of locations within the deposit zones. Sufficient samples were taken and tests were performed using sufficient sample mass for the respective tests undertaken.
Samples are currently selected for every 300,000 t of ore to be processed, using a grade/tonnage table, and used in mine-to-mill testing.
10.6    Deleterious Elements
The Ahafo ores are clean ores containing low levels of problematic elements. The ores do not contain significant amounts of arsenic, selenium and mercury to indicate health or environmental risks. No appreciable levels of rich-solution-robbing materials are present in the ores. The ores contain low sulfide sulfur, and low concentrations of primary cyanide consumers (copper, nickel and zinc), which suggest that cyanide consumption may increase.
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Table 10-1:    Ahafo Recovery Estimates
Deposit/ZoneMetallurgical Recovery
(%)
Apensu Deeps84
Apensu underground83
Apensu South underground81
Awonsu phases 1 and 285
Awonsu phases 3 and 489
Subika open pit93
Subika underground94
Note: all recoveries presented on an average LOM projected grade basis.
10.7    Qualified Person’s Opinion on Data Adequacy
The QP notes:
Metallurgical testwork completed on the Project is appropriate to establish optimal processing for the different deposits that comprise the Ahafo Operations;
Testwork was completed on mineralization that is typical of the deposit styles. The testwork indicates that mineralization typically becomes harder with depth, and that in the primary ore gold is associated with fine pyrite mineralization or silicates;
The mill throughput and associated recovery factors are considered appropriate to support mineral resource and mineral reserve estimation, and mine planning;
Additional testwork is required for Apensu Deeps to confirm whether the 4% upscale factor used for all other Ahafo deposits is applicable to this mineralization;
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11.0    MINERAL RESOURCE ESTIMATES
11.1    Introduction
The close-out date for the databases used in the various mineral resource estimates are as follows:
Subika open pit: April 2020;
Apensu-Awonsu : January, 2020;
Subika underground: June, 2021;
Apensu underground: July, 2021.
Geological models were constructed using Leapfrog and Vulcan geological modeling software. Block models were built with cell dimensions that were appropriate to the deposit style, orientation and dimensions of the mineralization. Selectivity during mining, mining method, equipment size and bench height were also taken into account when determining parent cell size. Sub-blocks were used to better represent volumes of thin, high-grade mineralization. All other block models intended for open pit mining were full cell models. Grade estimation was performed at the parent cell level and sub-blocks took the grades of corresponding parent blocks.
Sub-blocks were used in both underground and open pit models to better represent volumes of thin, high-grade mineralization. Grade estimation was performed at the parent cell level and sub-blocks took the grades of corresponding parent blocks. After grade estimation the sub-blocks models for open pits were re-blocked to 24 x 12 x 8 m for Subika and 12 x 12 x 8 m for the combined Apensu–Awonsu model.
For open pit resource models, where grade control information (blasthole assays) was available, the grade estimation parameters were determined through calibration against a grade–tonnage curve derived from re-blocked grade control models. For underground resource models where no grade control information was available (Apensu Deeps and Subika underground), estimation focused on minimizing conditional bias and generation of a high-quality local estimate.
The data used for the model construction were approved drill holes extracted from the GED. Data were validated using Vulcan ISIS validation tools and on-screen visualization. Issues that came out of the validation process were resolved by project geologist and corrections were sent back to the GED before a final extraction to incorporate the validated data for the geological modeling.
Geological models incorporated various combinations of lithology, structure, alteration, mineralization and metallurgical characteristics. These elements were interpreted on section and reconciled in plan. Interpretation strings were snapped to drill hole intercepts and extrapolated 25 m beyond the last section where there was no drill hole information. Where there was drill hole information that could not support the interpretation, the extrapolation is limited to half-way between sections. Intermediary strings were generated for areas with high drill hole density. Domains were modeled if they consistently occurred on three consecutive sections.
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11.2    Exploratory Data Analysis
Exploratory data analysis made use of tools such as descriptive statistics, histograms, cumulative probability plots, box plots, and contact analysis of raw assays to guide the construction of the block model and the development of estimation plans.
Most boundaries were considered hard for mineral resource estimation purposes, except at Apensu, Awonsu and Subika open pits where some domains were combined to produce soft contacts.
11.3    Density Assignment
Specific gravity values were assigned to the combined Apensu–Awonsu block model based on oxidation surfaces interpreted by site geologists. The bottom of saprolite and the top of fresh (not oxidized) material were used to assign SG values to oxidized, partially oxidized and fresh (non-oxidized) material.
Density values were estimated into the Subika and Apensu underground models and the Subika open pit model to define local variability.
11.4    Grade Capping/Outlier Restrictions
Grade caps were determined from raw assay or composite statistics for each geology domain. In most cases, caps were determined from cumulative probability graphs of raw assays or composite, indicated correlation and verified independently by the decile or Parrish methods and/or the hi-risk approach which assesses the amounts of metal at risk in each domain.
11.5    Composites
Composite lengths vary by deposit, and range from 2–8 m, broken at geological contacts. The composites were coded for lithology, oxidation state and grade shell using the 50% rule when using MineSight software and the centroid rule when Vulcan was used for grade estimation.
11.6    Variography
Variograms were computed by lithological domain in either Sage (correlograms) or Supervisor software (correlograms/normal score transform) and were calculated in the rotated plane of the mineralization as determined from variogram contours/maps. Directional increments were used to determine principal directions in each lithological domain. The nugget effect was determined and modelled from the down the hole variograms. Usually, two spherical or exponential structures were fitted in most cases using a combination of the auto-fit option and geological interpretation. In the case of normal score transform, the final result is then back transform to original data unit.
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11.7    Estimation/interpolation Methods
Newmont has a standardized protocol for resource modelling and estimation, which includes the following steps:
A cross-functional model planning meeting is held to define the purpose of the Resource model;
Data quality and suitability are verified during database extraction process;
Appropriate geological frameworks are constructed during the geological modeling phase;
Regular progress meetings and a handover meeting of the geological model to the Resource estimation personnel are convened. A geostatistician is involved in the geological modelling process so they have an understanding of what is being modeled;
Exploratory data analysis is undertaken as per the relevant guidelines;
The estimation plan is consistent with the data analysis and mineralization style, change of support is investigated and where possible the model calibrated with production data;
Resource is classified in conformance with the Resource Classification Guideline;
Resource risk is assessed in accordance with the Resource Risk Assessment Guideline;
A face to face or virtual meeting and presentation is held with Mine Engineering for each Resource model released;
Model documentation is completed in conformance with the Resource Model Documentation Guideline.
All deposits were estimated using ordinary kriging (OK) interpolation methods. Grade estimations were selective by mineralization domains in most cases and restricted within a +0.2 g/t Au grade shell.
A multi-pass search strategy (usually three passes) was used to estimate each domain. Each domain used a minimum of 1–12 samples, maximum of 10–52 samples and maximum of 2–4 samples per drill hole for the first and second passes. The search distances for these two passes used the range of the second structure of the modelled variogram, or a shorter range. A third pass was introduced with a very large search distance to estimate majority of blocks that were not estimated in the first and second passes due to limited drill data.
An outlier restriction method was employed during estimation to avoid smearing high-grade samples when estimating distant blocks.
11.8    Validation
Validation used Newmont-standard methods, which included:
An on-screen check of geological domain assignment;
An on-screen check of composite selections;
An on-screen, visual inspection of OK (or inverse distance to the fifth power) blocks in plan and section and a comparison with the composite input data;
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A check on global grade bias by comparing the statistics of OK and nearest neighbor (NN) grade estimates, usually by domains;
An on-screen check of model block density assignments;
Hermitian correction (Herco) to account for change of (composite and block) support;
Swath plots along the major dimensions of the deposits, comparing OK, inverse distance, and NN estimates together with tonnage by domains;
Calibration to historical production for Subika open pit, Awonsu and Apensu deposits.
These validation procedures indicated that the geology and resource models used are acceptable to support mineral resource estimation.
11.9    Confidence Classification of Mineral Resource Estimate
11.9.1    Mineral Resource Confidence Classification
Resource classification parameters were based on the results of drill hole spacing studies. A drill spacing study conducted for Amoma in 2009 was used for the Subika, Apensu and Awonsu open pit mineral resource confidence classifications. A 2014 drill hole spacing study was used when generating the long-hole stoping model and a 2019 drill hole spacing study was used when generating the sublevel shrinkage model that together support the mineral resource confidence classification for Subika underground.
Mineral resource classification was undertaken based primarily on drill spacing and number of drill holes used in the estimate:
Measured: drill spacing ranges from 12.5 x 12.5–25 x 25 m;
Indicated: drill spacing ranges from 25 x 25–35 x 35 m;
Inferred: drill spacing ranges from 50 x 50–70 x 70 m.
A quantitative assessment of geological risk was undertaken and applied on a block by block basis. Primary risks to resource quality include quantity and spacings of drill data, geological knowledge, geological interpretation and grade estimates. All identified risks are within acceptable tolerances with associated management plans.
11.9.2    Uncertainties Considered During Confidence Classification
Following the analysis in Chapter 11.9.1 that classified the mineral resource estimates into the measured, indicated and inferred confidence categories, uncertainties regarding sampling and drilling methods, data processing and handling, geological modelling, and estimation were incorporated into the classifications assigned. The areas with the most uncertainty were assigned to the inferred category, and the areas with fewest uncertainties were classified as measured.
A quantitative assessment of geological risk was completed using Newmont-standard methods and applied on a block-by-block basis. Primary risks to resource quality include quantity and spacings of drill data, geological knowledge, geological interpretation and grade estimates. All identified risks were within Newmont-acceptable tolerances with associated management plans.
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11.10    Reasonable Prospects of Economic Extraction
11.10.1    Input Assumptions
For each resource estimate, an initial assessment was undertaken that assessed likely infrastructure, mining, and process plant requirements; mining methods; process recoveries and throughputs; environmental, permitting and social considerations relating to the proposed mining and processing methods, and proposed waste disposal, and technical and economic considerations in support of an assessment of reasonable prospects of economic extraction.
Mineral resources considered amenable to open pit mining methods are reported within a Lerchs–Grossmann (LG) pit shell that uses the parameters set out in Table 11-1. Variable incremental cut-off grades that range from 0.39–0.40 g/t Au in saprolite to 0.52–0.57 g/t Au in transition/fresh material were used in the inputs.
Mineral resources considered amenable to underground mining methods are reported within underground stope designs, using the parameters in Table 11-2. Variable incremental cut-off grades that range from 2.0–2.4 g/t Au were used in the inputs.
11.10.2    Commodity Price
Commodity prices used in resource estimation are based on long-term analyst and bank forecasts, supplemented with research by Newmont’s internal specialists. An explanation of the derivation of the commodity prices is provided in Chapter 16.2. The estimated timeframe used for the price forecasts is the 11-year LOM that supports the mineral reserve estimates.
11.10.3    Cut-off
The resources are reported at varying cut-off values, which are based primarily on the material type being mined, and the mining method. Process and G&A costs are based on the assumption all material is treated through the Ahafo process plant, and such costs vary by material type.
11.10.4    QP Statement
The QP is of the opinion that any issues that arise in relation to relevant technical and economic factors likely to influence the prospect of economic extraction can be resolved with further work. The mineral resource estimates are performed for deposits that are in a well-documented geological setting; the district has seen nearly two decades of active open pit operations and four years of underground mining operations conducted by Newmont; Newmont is familiar with the economic parameters required for successful operations in the Ahafo area; and Newmont has a history of being able to obtain and maintain permits, social license and meet environmental standards in Ghana. There is sufficient time in the 11-year timeframe considered for the commodity price forecast for Newmont to address any issues that may arise, or perform appropriate additional drilling, testwork and engineering studies to mitigate identified issues with the estimates.
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Table 11-1:    Input Parameters, Open Pits
ParametersOxidationUnitsSubikaAwonsuApensu
Main
Apensu
South
Gold priceUS$/oz1,4001,4001,4001,400
Royalty rate%5433
RoyaltyUS$/oz70564242
Refinery and
carbon handling
US$/oz1.7681.7681.7681.768
Discount rate%0000
Mining costSaproliteUS$/t mined3.012.732.732.73
Transition + fresh rockUS$/t mined3.743.453.453.45
Mining cost incrementalSaproliteUS$/t mined/bench0.0020.0240.0230.023
Transition + fresh rockUS$/t mined/bench0.0020.0240.0230.023
Waste rehabilitation costUS$/t mined0.060.060.060.06
Process & G&A costSaproliteUS$/t processed16.2016.2016.2016.20
Transition + fresh rockUS$/t processed20.2820.4020.9420.48
Metallurgical
recovery
Saprolite%96969696
Transition + fresh rock%91838484
Pit slope angles
(IRA)
Saprolite + transitiondegrees30303030
Fresh rock footwalldegrees554136–4836–48
Fresh rock hanging walldegrees55505151
Cut-off gradesSaproliteg/t Au0.400.390.390.39
Transition + fresh rockg/t Au0.520.570.580.56
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Table 11-2:    Input Parameters, Underground
Economic ParametersZoneUnitsApensu DeepsSubika
Gold priceUS$/oz1,4001,400
Royalty rate%5.57.5
Refinery and carbon handlingUS$/oz1.871.87
Discount rate%00
Mining costUS$/t mined88.1596.27
Process costUS$/t processed25.0730.59
G&A costUS$/t processed4.073.24
Metallurgical recoveryMain zone%90
Central zone94
North zone8794
South zone9094
Cut-off gradeg/t Au2.0–2.42.8
Note: Metallurgical recovery figure is the percentage used in stope design and differs slightly from the LOM plan percentage assumption.
11.11    Mineral Resource Statement
Mineral resources are reported using the mineral resource definitions set out in SK1300, and are reported in situ.
Mineral resources are current as at December 31, 2021. Mineral resources are reported exclusive of those mineral resources converted to mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
The measured and indicated mineral resource estimates for the Ahafo Operations are provided in Table 11-3. The inferred mineral resource estimates are included in Table 11-4.
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Table 11-3:    Measured and Indicated Mineral Resource Statement
AreaMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated Mineral Resources
Tonnage
(x 1,000 t)
Grade (g/t Au)Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade (g/t Au)Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade (g/t Au)Cont. Gold
(x 1,000 oz)
Apensu15,5001.2864015,5001.28640
Awonsu14,2001.0447014,2001.04470
Subika5000.5610.003000.57107000.5610
Open Pit Sub-Total5000.5610.0030,0001.161,12030,5001.151,130
Apensu Deeps14,2004.021,84014,2004.021,840
Subika2,4003.762902,4003.76290
Underground Sub-Total16,6003.992,12016,6003.992,120
Ahafo Total5000.5610.0046,6002.163,24047,1002.153,250
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Table 11-4:    Inferred Mineral Resource Statement
AreaInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Apensu3,5001.4150
Awonsu8,6001.2340
Subika1,4001.880
Open Pit Sub-Total13,5001.3570
Apensu Deeps8,5003.0820
Subika2,4004.6350
Underground Sub-Total10,8003.31,160
Ahafo Total24,3002.21,730
Notes to Accompany Mineral Resource Tables:
1.Mineral resources are current as at December 31, 2021. Estimates are reported using the definitions in SK1300. The Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.The reference point for the mineral resource estimate is in situ.
3.Mineral resources are reported on a 100% basis. Newmont holds a 90% interest and the Government of Ghana has a 10% free-carried interest.
4.Mineral resources are reported exclusive of mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
5.Mineral resources that are potentially amenable to open pit mining methods are constrained within a designed pit shell. Mineral resources that are potentially amenable to underground mining methods are constrained within conceptual stope designs. Parameters used are summarized in Table 11-1 (open pit) and Table 11-2 (underground).
6.Tonnages are metric tonnes rounded to the nearest 100,000. Gold grade is rounded to the nearest 0.01 gold grams per tonne. Gold ounces are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold ounces are reported as troy ounces, rounded to the nearest 10,000.
7.Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”).
8.Totals may not sum due to rounding.
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11.12    Uncertainties (Factors) That May Affect the Mineral Resource Estimate
Areas of uncertainty that may materially impact all of the mineral resource estimates include:
Changes to long-term metal price and exchange rate assumptions;
Changes in local interpretations of mineralization geometry such as pinch and swell morphology, extent of brecciation, presence of unrecognized mineralization off-shoots; faults, dykes and other structures; and continuity of mineralized zones;
Changes to geological and grade shape, and geological and grade continuity assumptions;
Changes to unfolding, variographical interpretations and search ellipse ranges that were interpreted based on limited drill data, when closer-spaced drilling becomes available;
Changes to metallurgical recovery assumptions;
Changes to the input assumptions used to derive the potentially-mineable shapes applicable to the assumed underground and open pit mining methods used to constrain the estimates;
Changes to the forecast dilution and mining recovery assumptions;
Changes to the cut-off values applied to the estimates;
Variations in geotechnical (including seismicity), hydrogeological and mining method assumptions;
Changes to environmental, permitting and social license assumptions.
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12.0    MINERAL RESERVE ESTIMATES
12.1    Introduction
Measured and indicated mineral resources were converted to mineral reserves. Mineral reserves in the Ahafo area are estimated for the Subika and Awonsu deposits, assuming open pit mining, and for Subika, assuming underground mining. Stockpiled material is also included in the mineral reserves estimates.
The Geovia Whittle pit optimization program (Whittle 4.7.3) was used to perform a Lerchs–Grossmann (LG) optimization in support of mineral reserves reporting for mineralization amenable to open pit mining methods.
A safety crown pillar of 25 m is left between the base of the Subika Phase 4 pit and the top of the Subika underground stopes. This pillar will not be mined and thus makes Phase 4 the final open pit limit for the Subika deposit.
All Inferred blocks are classified as waste in the cashflow analysis that supports mineral reserve estimation.
12.2    Open Pit Estimates
12.2.1    Pit Optimization
For mineral reserves, Newmont applies a time discount factor to the dollar value block model that is generated in the LG pit-limit analysis, to account for the fact that a pit will be mined over a period of years, and that the cost of waste stripping in the early years must bear the cost of the time value of money. In some deposits, where mineralization is uniformly distributed throughout the pit, or where the pit is shallow, discounting has little effect on the economic pit limit. For the Awonsu and Subika deposits, where upper benches contain a high percentage of the waste, and mineralization quantities and/or grade increase with depth, discounting provides a smaller pit limit upon which mine designs are based.
Pit discounting is accomplished by running the pit-limit “dollar” model through a program that discounts the dollar model values at a compound rate based on the depth of the block. In this manner, discounting is applied to future costs as well as future revenues, to represent the fact that mining proceeds from the top down within a phase.
Optimization work involved floating pit shells at a series of gold prices. The generated nested pit shells were evaluated using the mineral reserve gold price of US$1,200/oz and an 8% discount rate. The pit shells with the highest NPV were selected for detailed engineering design work.
A realistic schedule was developed in order to determine the optimal pit shell for each deposit; schedule inputs include the minimum mining width, and vertical rate of advance, mining rate and mining sequence.
Whittle analysis indicated a two-stage pit development was the best option for Awonsu, using a minimum mining width of 50 m. Mining within the Subika open pit is in the final stage with limited potential to expand at depth as a result of the underground crown pillar. No changes
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were made to the Phase 4 pit design for Subika. The minimum mining width between the mined-out third phase of the Subika pit and the final, fourth phase, was 50 m.
12.2.2    Optimization Inputs
Operating costs for mining, processing, site and Accra administration were developed as part of the 2022 business plan (BP22) process. The costs build-up for the LOM in that plan were based on actual values as of the end of April 2021, as well as inclusion of a number of projected cost-saving measures and efficiency gains. Costs were un-escalated. Input parameters used in the constraining pit shells are summarized in Table 12-1. The costs developed as part of the LOM plan were based on a three-shovel mining fleet through to the end of the mine life. Truck and drill quantities were forecast and budgeted during the business planning process based on detailed studies. MineSight’s MSHaulage software was used to generate haulage distances and travel times based on truck field studies and site-based speed tables. The travel times were input into XERAS software, together with the mining and process schedule, to generate the required truck quantities per period. Drill quantities were forecast based on mining rates, pattern size and pit specific penetration rates.
Process costs were determined for each pit and material type (oxide and primary) using BP22 and results of internal studies. The theoretical process cost per tonne was determined for each material type from both the BP22 costs and ore feed blend.
Reclamation and closure costs were estimated from site environmental calculations.
Mine operating costs are sensitive to the cost of diesel fuel. Mineral reserves assume US$0.8861/L diesel for Brent pricing as per Newmont Corporate Guidance and account for Ghanaian taxes and local delivery. Mill operating costs are sensitive to the cost of electrical power. The mineral reserves assume a power cost of US$0.124 per kWh based on Newmont’s estimate of long-term power costs.
12.2.3    Ore Loss and Dilution
All operating pits at Ahafo South are mined on 8 m benches. The Subika model is a 24 x 12 x 8 m model to account for the 8 m mining. Block models for Awonsu, however, are produced using a 12 x 12 x 8 m block dimension to reflect the increased selectivity in ore zones.
The block models were constructed to include the expected dilution based on mining methods, bench height and other factors. The current mine and process reconciliation appears to support this assumption.
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Table 12-1:    Input Parameters, Open Pits
ParametersOxidationUnitsSubikaAwonsu
Gold priceUS$/oz1,2001,200
Royalty rate%54
RoyaltyUS$/oz7056
Refinery and carbon
handling
US$/oz1.771.77
Discount rate%00
Mining costsaproliteUS$/t mined3.012.73
transition + fresh rockUS$/t mined3.743.45
Mining cost incrementalsaproliteUS$/t mined/bench0.0020.024
transition + fresh rockUS$/t mined/bench0.0020.024
Waste rehabilitation costUS$/t mined0.060.06
Process & G&A costsaproliteUS$/t processed16.2016.20
transition + fresh rockUS$/t processed20.2820.40
Metallurgical recoverysaprolite%9696
transition + fresh rock%9183
Pit slope angles
(IRA)
saprolite + transitiondegrees3030
fresh rock footwalldegrees5541
fresh rock hanging walldegrees5550
12.3    Underground Estimates
12.3.1    Mining Zones
The underground mining operations are split into two areas:
The Upper mining zone, above the 840 relative level (RL); also referred to as the upper Yoda area;
The Central mining zone (corridor) below the 840 RL; also referred to as the Central area.
12.3.2    Stope Designs
The mine plan assumes use of a number of different mining methods including:
Sub-level shrinkage stoping (SLS);
Long-hole open stoping (LHOS).
Stope designs for underground operations are based on the parameters in Table 12-2. Additional input parameters to the underground mineral reserves estimate are provided in Table 12-3. Chapter 13.3 provides details on mine designs and cut-off grades.
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A 25 m thick crown pillar will be left between the base of the Subika open pit, and the underground operations. An exclusion zone was created for the region under the final pit shape. Stopes within the exclusion zone that could not be adequately supported with additional ground support were removed from the mine plan.
Stopes were created using Deswik Stope Optimizer software at the required stope height, length and cut-off criteria based on the mine area. The stope widths depend on the stope cut-off and dilution (over-break) added to stope design, and the mining method used.
12.3.3    Ore Loss and Dilution
A stope recovery of 90% is expected in all mining areas. Dilution is projected to average 7.6%.
12.4    Stockpiles
Stockpile estimates were based on mine dispatch data; the grade comes from closely-spaced blasthole sampling and tonnage sourced from truck factors. The stockpile volumes were typically updated based on monthly surveys. The average grade of the stockpiles was adjusted based on the material balance to and from the stockpile.
Table 12-2:    Design Parameters, Subika Underground
ParameterUnitSLSLHOS
Stoping incremental cut-offg/t Au2.42.9
Dilution hanging wallm00.5
Dilution footwallm00
Dilution development%1212
Stope width minimumm15>5
Stope width maximumm1535
Level spacing LHOSRm2525
Min stope lengthm15>15
Max stope length (excluding pillar)m6040
Stope-pillar extraction%0
Minimum pillar ratio1.3
Fill assumption%6570
Pillar lengthsm20-35
Crown pillarmApprox 50Approx 30
Stope end wall
Footwall angledegrees100110
Hanging wall angledegrees7070
Minimum pillar between stopesm020
Stope recovery%88.988.9
Mill recovery%9494
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Table 12-3:    Input Parameters, Subika Underground
Economic ParametersUnitsValues
Gold priceUS$/oz1200
Royalty rate%5
Refinery and carbon handlingUS$/oz1.87
Discount rate%8
Mining costUS$/t mined59.20
Process costUS$/t processed14.42
G&A cost + site sustainingUS$/t processed5.85
Cut-off gradesg/t2.4–2.9
12.5    Commodity Prices
Commodity prices used in mineral reserve estimation are based on long-term analyst and bank forecasts, supplemented with research by Newmont’s internal specialists. The estimated timeframe used for the price forecasts is the 11-year LOM.
12.6    Mineral Reserve Statement
Mineral reserves have been classified using the mineral reserve definitions set out in SK1300. The reference point for the mineral reserve estimate is the point of delivery to the process facilities. Mineral reserves are reported on a 100% basis. The Government of Ghana has a 10% free-carried interest in the Project. Newmont has a 90% interest.
Mineral reserves are reported in Table 12-1 and are current as at December 31, 2021. Tonnages in the table are metric tonnes. Mineral reserves are reported using the mineral resource definitions set out in SK1300.
12.7    Uncertainties (Factors) That May Affect the Mineral Reserve Estimate
Areas of uncertainty that may materially impact all of the mineral reserve estimates include:
Changes to long-term metal price and exchange rate assumptions;
Changes to metallurgical recovery assumptions;
Changes to the input assumptions used to derive the mineable shapes applicable to the assumed underground and open pit mining methods used to constrain the estimates;
Changes to the forecast dilution and mining recovery assumptions;
Changes to the cut-off values applied to the estimates;
Variations in geotechnical (including seismicity), hydrogeological and mining method assumptions;
Changes to environmental, permitting and social license assumptions.
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Table 12-4:    Proven and Probable Mineral Reserve Statement
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Awonsu32,9001.571,66032,9001.571,660
Subika11,8002.358906,7002.1948018,5002.291,360
Open Pit Sub-Total11,8002.3589039,6001.672,14051,4001.833,020
Subika9,4003.761,14012,7002.681,10022,1003.142,240
Underground Sub-Total9,4003.761,14012,7002.681,10022,1003.142,240
Stockpile Sub-total28,3000.9283028,3000.92830
Ahafo Total49,5001.802,86052,4001.923,240101,8001.866,090
Notes to Accompany Mineral Reserves Table:
1.Mineral reserves are current as at December 31, 2021. Mineral reserves are reported using the definitions in SK1300. The Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.The reference point for the mineral reserve estimates is the point of delivery to the process plant.
3.Mineral reserves are reported on a 100% basis. Newmont holds a 90% interest and the Government of Ghana has a 10% free-carried interest.
4.Mineral reserves that are estimated using open pit mining methods are constrained within a pit design based on an optimized Lerchs–Grossmann pit shell. Parameters used are shown in Table 12-1 for the open pit mineral reserves and Table 12-2 and Table 12-3 for the underground mineral reserves.
5.Tonnages are metric tonnes rounded to the nearest 100,000. Gold grade is rounded to the nearest 0.01 gold grams per tonne. Gold ounces are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold ounces are reported as troy ounces, rounded to the nearest 10,000.
6.Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”).
7.Totals may not sum due to rounding.
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13.0    MINING METHODS
13.1    Introduction
Open pit mining is conducted using conventional techniques and an Owner-operated conventional truck and shovel fleet.
Underground mining is currently conducted using conventional stoping methods, and conventional mechanized equipment. Underground mining is conducted by a contractor.
13.2    Open Pit
13.2.1    Geotechnical Considerations
Open pit design uses defined geotechnical domains together with rock mass quality ratings for the principal lithologies and appropriate pit design criteria that reflect expected conditions and risk. Inter-ramp angles vary by deposit and pit wall lithology, and range from 30–55º. Both Newmont’s Geotechnical Engineering Department and external consultants have completed geotechnical studies and provided the geotechnical recommendations that form the basis for pit designs. A ground control management plan was developed, and is updated on an annual basis.
13.2.2    Hydrogeological Considerations
The active pits are currently mining below the water table. Pit dewatering uses a combination of perimeter and in-pit dewatering wells, in-pit sumps, and horizontal drains. A network of monitoring piezometers is installed around all of the operating pits.
13.2.3    Operations
The Surface LOM plan currently envisages mining at an average rate of approximately 26 Mt/a for nine years and peaking at 32.6 Mt/a in 2022 with a maximum rate of advance by pit stage of eight benches per annum and an average of six benches (48 m) per year. The open pit mine life will extend to 2030 with Awonsu phase 4 being the last pit. Milling will cease in 2032 after treatment of stockpiled ore. A final pit layout plan showing the pit phases for each of the open pits is provided in Figure 13-1.
Pit design assumptions include haul road widths for two-way travel of 30 m, maximum ramp grades of 10% and minimum pit-bottom widths of 30 m in deep pits as a safety measure. In selected pit-bottom benches where good grades are located, the haul road widths are reduced to 21 m wide one-way traffic to allow for maximum mining recovery.
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Figure 13-1:    Final Pit Layout Plan
image_24.jpg
13.2.4    Blasting and Explosives
Production drilling and blasting for the open pits is conducted on 8 m benches with a subdrill of 1.2 m, using a 165 mm diameter bit. The pattern for production drilling is 4 x 4.5 m in both ore and waste, with powder factors varying by material type and geological conditions. Bulk
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emulsion is loaded into both production and buffer holes; the stemming length varies according to rock type and other geologic conditions but it is generally at 3.3 m. Pre-splitting is conducted on all pit wall areas with power-split explosives supplied by the explosives provider, Orica.
The powder factor for open pits is 0.92kg/m3.
13.2.5    Grade Control
Samples from blast hole drilling in the open pit are analyzed and assay results used to generate grade control polygons that are demarcated on the ground for ore and waste zone mining. The blast hole pattern is typically 4 x 4.5 m.
13.2.6    Production Schedule
The combined open pit and underground production schedule is provided in Table 13-1.
13.2.7    Equipment
All open pit equipment is Owner-operated and owned. An equipment summary is provided in Table 13-2.
13.2.8    Personnel
The LOM personnel requirements for the open pit operations are 507 people.
13.3    Underground
13.3.1    Geotechnical Considerations
Geotechnical data collection is outlined in Chapter 7.4.
Baseline geotechnical information was used in the initial underground designs, at a time when a long-hole open stoping mining method was the preferred mining method. An improved understanding of the geotechnical setting, incorporating information on adverse in-situ stress conditions and variations in the rock mass quality, led to the selection of sublevel shrinkage stoping (SLS) in preference to long-hole open stoping.
Table 13-1:    Combined Open Pit and Underground Production Schedule
ItemUnitTotal20222023202420252026202720282029203020312032
Material minedM tonnes2943534313432352718102
Ore processedM tonnes102101010101091010995
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Table 13-2:    Equipment List
Item/PurposeCommentPeak Number
Production drillsD45KS7
Presplit drillsD5603
Production shovelsLiebr94003
Haul trucksCAT 785C25
GradersCAT16M2
LoadersCAT 992K&G5
The SLS mining method addresses major geotechnical risks associated with the initial long-hole open stoping mine design and the adaptation of ground control measures (such as center-out mining approach which eliminates diminishing pillars, backfilling, just-in-time development, chevron-type mining sequence, creation of stress shadows along the hanging wall, instrumentation monitoring, etc.) further improves the regional stability of the underground excavation.
A transition zone between mining methods at 450 meters below surface (mbs) was required to migrate the different stoping types.
13.3.2    Hydrogeological Considerations
Ground water inflows of approximately 40–45 L/s are predicted, and the current Subika dewatering system capacity is around 140 L/s. A 125 L/s dewatering system at the new pump station on 700 Level will serve as the main system with the 140 L/s capacity serving as a backup.
13.3.3    Operations
Mining levels are based on the mining method to be used, which varies by depth from surface (Table 13-3; Figure 13-2).
Table 13-3:    Mining Methods
Mining MethodIntervalComment
Sub level shrinkage stoping
(SLS)
Below 700 RL
20 and 25 m levels. Mined using a top-down mining method.
Long-hole open stoping
(LHOS)
Above 750 RL25 m levels. Mined using top-down methods.
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Figure 13-2:    Example Level Layout Schematic by Mining Method
a333.jpg
Note: Figure prepared by Newmont, 2021.
Stopes in the central mining zone, 800–700 RL, are being mined using the sub-level open stoping mining method through a set of twin spiral declines that were developed off the existing main haulage decline. Level accesses were created off the decline at 25 m intervals to intersect the ore zone.
The ore drives were driven to the extents of the defined mining corridor and stoping is being retreated from the end of the orebody towards the accesses. These stopes are being mined top-down.
The stopes were mined in panel with the maximum span up to 100 m vertical distance. Stopes were mined using a combination of longitudinal and transverse retreat methods in 25 m sublevels. A section of the mining area on the 800–750 RL will be mined in 50 m panels to increase productivity. Stopes were mucked using a combination of free and remote bogging. The ore on these levels was loaded directly from the mining extraction level to trucks or/and
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stockpiles, hauled up through a designated(one-way) main decline to surface, and placed on the run-in-mine (RIM) pad. Surface haulage trucks transported material from the RIM pad to the process plant ROM pad.
The open stopes were backfilled with unconsolidated rock ones the stope panel was completed.
The declines were connected via a link drive that acted as a ventilation, escapeway and haulage connection between the two declines. To increase productivity, there was a one-way traffic in and out of the mine with the aid of the two declines and decline links.
Below the 725 RL, the access drive from the decline connected to a footwall drive that was offset from the ore zone by 30 m. Stope access drives were driven off the footwall drives to develop the stopes in the mineralized zone. The footwall drives were used for infrastructure to connect ventilation returns, fresh air, sumps and other infrastructure to support mining on the levels.
The second mining method being used was the SLS method. This started from the 680 RL. The mine will totally transition to the SLS mining method in a few years when the open stopes are complete, but currently, the two mining methods are being used together.
A 50 m sill pillar was established from the 750–700 RL to separate the two mining methods. The sill pillar houses infrastructure such as the 15 fill passes for backfilling and the geotechnical instrumentation monitors.
The first two levels, 680 RL and 660 RL, have 20 m sublevels and from 635 RL, the sublevels are every 25 m.
Apart from the 680 RL that is using the longitudinal mining approach, the rest of the levels are/will be mined using the transverse method. Mining commences from the center of the orebody out towards the draw point extremities, thus splitting the mining fronts into two halves. Production rings are being fired adopting the chevron mining pattern. This will ensure the mine achieves multiple mining fronts to maximize production.
A structured draw percentage strategy by level was used for the extraction of the blasted material which started from 45% draw in high-grade rings and 30% draw in low-grade rings on the 680 RL.
Current plans are to mine two sublevels concurrently due to geotechnical seismicity guidelines. Unconsolidated backfill material are introduced through the fill passes to ensure wall stability and maintain the integrity of the sill pillar. The backfill material is currently being sourced from the underground waste development headings and later, the yet to be developed waste pass from surface. The waste pass from surface will make use of the open pit WRSF material.
A final mine layout plan is provided in Figure 13-3.
13.3.4    Ventilation
The ventilation system for Subika includes refrigeration, primary and secondary fans and intake and return ventilation raises. Subika underground currently has two primary exhaust systems installed. The total mine air supply is approximately 800 m3/s.
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13.3.5    Blasting and Explosives
The powder factor for both open stopes and the sub-level stoping ranges from 0.4–0.55 kg/t. For optimal drilling efficiency a burden of 2.8 m with ring toe spacing of 3.2 m is used for stopes. Currently the emulsion density is 1.2 g/cm3 with 403 and 406 gassers for up-holes and down-holes respectively.
13.3.6    Ore Control
Underground or control drilling is at 12.5 m and 17 m spacing for long-hole open stoping and sub-level shrinkage mining methods respectively, targeting at least two levels ahead of mining.
Full core samples generated from the ore control drilling were logged and assayed, and the resultant data together with mapping data from development headings, were used to the build geologic model, which then feeds into the block model constructed for mine production, delineating ore and waste zones in the process.
13.3.7    Production Schedule
The combined open pit and underground production schedule was provided in Table 13-1.
13.3.8    Equipment
Table 13-4 summarizes equipment requirements for the LOM plan.
13.3.9    Personnel
The mining personnel total required for underground operations is 126 persons.
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Figure 13-3:    Final Underground Mine Layout Plan
image_26.jpg
Note: Figure prepared by Newmont, 2021. EMP = Emperor mining zone; YOD = Yoda mining zone; SKY = Sky mining zone. Grey blocks are mined out.
Table 13-4:    Equipment Requirements, Underground
Item/PurposePeak Number
Drills, jumbos and bolters9
Raise borers2
Load–haul–dump vehicles5
Underground trucks6
Trucks7
Wheel loaders5
Graders2
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14.0    RECOVERY METHOD
14.1    Process Method Selection
The process plant design was based on a combination of metallurgical testwork, previous study designs and industry standard practices for handling combinations of fresh rock and saprolite, together with debottlenecking and optimization activities once the mill was operational. The design is conventional to the gold industry and has no novel parameters.
14.2    Process Plant
A summary process flow sheet is included in Figure 14-1.
14.2.1    Plant Design
The process plant started operations in 2006 and was designed to treat 7.5 Mt/a using a blend of 27:73 oxide to primary ore. The plant was expanded in 2019 to treat an additional 3.0 Mt/a of primary ore. The planned throughput for the remaining LOM is projected to vary from 9.5–10.2 Mt/a (1.200–1,300 t/h), depending on the ore blend from the pits and underground operations.
The process route commences with one single-stage primary crushing fed by direct truck dump or front-end loader for crushing of primary ores onto a live crushed stockpile. This material is fed from the live crushed stockpile directly onto the Line 1 semi-autogenous grind (SAG) mill feed conveyor by apron feeder. An MMD-sizer is fed by front-end loader for treatment of oxide ore, which is fed directly onto the SAG mill feed conveyor.
Line 1 SAG milling is in close circuit with pebble crushers for scats or pebble crushing. Crushed pebbles scats return to the SAG mill feed conveyor. This is followed by closed-circuit ball milling to a P80 size of 106 µm for Line 1.
The Line 2 was commissioned in September 2019. The process route commences with one single-stage primary crushing fed by direct truck dump or front-end loader for crushing of primary ores onto a live crushed stockpile. This material is fed from the live crushed stockpile directly onto the Line 2 SAG mill feed conveyor by apron feeder. SAG milling is in closed circuit with pebble crusher for scats or pebble crushing. Crushed pebbles scats return to the SAG mill feed conveyor. This is followed by closed-circuit cycloning to a P80 size of 106 µm for Line 2.
The Line 1 and Line 2 cyclone overflow feed converge and through the trash screens to leach feed thickening. The thickener feed is pumped through 13 carbon-in-leach (CIL) tanks. Cyanide and oxygen are added to the thickener feed for leach with gold recovery from solution using activated carbon.
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Figure 14-1:    Process Flowsheet
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Note: Figure prepared by Newmont, 2021.
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An 18 t Anglo American Research Laboratory method (AARL) elution circuit is used to strip gold from loaded carbon. Rich solution from the elution circuit reports to the gold room rich solution tank. Electrowinning of rich solution is conducted using stainless-steel cathodes, and the sludge collected from the stainless-steel cathodes is smelted in a furnace to produce doré.
A counter-current decantation (CCD) circuit was commissioned in 2008 to recover cyanide from CIL tailings prior to discharge to the TSF. Recovered cyanide is effectively re-used in the CIL circuit and weakly acid-dissociable cyanide (CNWAD) levels in the plant tailings are effectively controlled to ensure discharge limit of 50 ppm CNWAD is not exceeded.
14.2.2    Equipment Sizing
Design criteria are summarized in Table 14-1. The plant equipment is outlined in Table 14-2.
14.3    Power and Consumables
Consumables used include reagents, and high- and low-pressure air. The main water sources for the process plant are from stored water in the mined out Apensu open pit and the TSF. Potable water is sourced from boreholes. The Line 1 installations require approximately 30 MW of power to operate at full capacity while Line 2 draws about 15 MW of power. The site has an emergency backup generation plant consisting of seven 3.9 MW high-speed GE generators that together are capable of producing about 27.3 MW of supplemental power.
14.4    Personnel
The process personnel required for the LOM plan total 251 persons. This count includes both operations and maintenance staff.
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Table 14-1:    Design Criteria
UnitsSaprolitePrimary
Plant capacityMt/a0.429.5
Head grade (design)Au g/t0.651.87
Design gold recovery%95.092
Crushing plant availability%9292
Mill/CIL availability%9393
Bond abrasion index (Ai)0.34–0.830.34–0.83
Bond ball mill work index (BWi)kWh/t17.4–19.217.4–19.2
Grind size (P80)μm106106
Installed mill power (SAG + ball)kW26,00026,000
Number of CIL tanks1313
Total CIL volume
m3
42,25042,250
Calculated CIL residence timeh20.720.7
Cyanide consumptionkg/t0.240.24
Quicklime consumptionkg/t3.440.9
Elution circuit typeAARLAARL
Elution circuit sizet18.018.0
Frequency of elutionstrips/week7.07.0
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Table 14-2:    Plant Equipment
Number/QtyDetails of Specification
254-inch x 74-inch gyratory crusher with 500 kW installed motors power
1MMD 154 series twin-shaft 4-tooth x 9 ring sizer with 2 x 150 kW installed motor power
210.36 m x 5.0 m EGL SAG mill with 2 x 650 kW installed motor power
23.6-m x 7.3-m double deck pebble dewatering screen, top deck -33 mm x 66 mm, bottom deck 10 mm x 36 mm panels
2MP 800 pebble crusher, one duty, one standby, each with 600 kW installed motor power for line 1
2HP 400 pebble crusher, one duty, one standby, each with 315 kW installed motor power for line 2
17.31 m x 11.90 m EGL ball mill with 2 x 650 kW installed motor power
1226” Krebs cyclones for line 1
1220” Krebs cyclones for line 2
33.6 m x 6.1 m cyclone overflow trash screen, two duty, one standby, screen aperture- 0.7 mm x 12 mm, 37 kW 4-pole motor, DF 504S exciters
142 m pre-leach thickener
13
3,250 m3 leach and adsorption tanks
13Lightning agitators, 783 gearbox, A310 shaft and impellers
11.8 m x 4.8 m carbon recovery screen, screen aperture; 1.1 mm x 12 mm
23.6 m x 6.1 m carbon safety screen, one duty, one standby, screen aperture 1.1 mm x 12 mm, 30 kW 4-pole electric motor, DF 501S exciters
242 m CCD thickeners
11.2 m x 3.6 m carbon dewatering screen, screen aperture 0.7 mm x 12 mm
118 t acid wash column
118 t elution column
26,000 amp electrowinning cells
1TA 300D Barring furnace
1900 kg/hr diesel-fired carbon regeneration kiln
Note: EGL = effective grinding length, CCD = counter-current decant.
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15.0    INFRASTRUCTURE
15.1    Introduction
Key infrastructure associated with the Ahafo Operations includes:
Completed open pit mines at Apensu and Amoma; the Apensu open pit is being used for water storage;
Open pit mines at Awonsu and Subika;
An underground mine at Subika;
Five waste rock storage facilities (WRSFs); two active, and three inactive;
Five stockpiles;
Process plant;
TSF;
Water storage facility;
Reverse osmosis water treatment facility;
Sediment control structures;
Residential camp;
Mine accommodations village;
Various support facilities including truck and vehicle shops, warehouse, administration, contractor and temporary offices, fuel storage, core processing facilities at the mine site, clinic and emergency response facilities, gatehouse, mess facilities, change rooms, personnel training facilities, information technology (IT) communications setups and towers, environmental monitoring facilities, water treatment plants, sewage treatment plants, reagents shed, and plant nurseries.
During the remainder of the LOM, a new WRSF for storage of waste from the Apensu area will be required, as will a second water treatment plant.
An infrastructure layout plan showing the surface infrastructure layout was provided in Figure 13-1.
15.2    Roads and Logistics
Road access is outlined in chapter 4.2. Mine supplies are brought in by truck.
15.3    Stockpiles
A stockpiling strategy is practiced to defer lower-grade ores to the end of mine life. All stockpile inventories are calculated and reported monthly. Inventories are based on truck counts of material added to and removed from stockpiles, multiplied by truck tonnage factors.
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15.4    Waste Rock Storage Facilities
WRSFs are sited on hillsides as bank fills or within shallow drainages as complete valley fills and were sited 60–100 m from pit crests. Lift heights are typically planned at 16–20 m and the overall slopes are designed at 3:1.
The Apensu, Subika West and Amoma WRSFs are complete, and will have no additional waste tonnage added. The LOM plan assumes that only two WRSFs, at Subika East and Awonsu, will be active for the remainder of the mine life:
Subika East: overall approximate capacity of 197 Mt, mine plan will send 195 Mt of waste to the facility;
Awonsu: facility will be expanded to the northwest; overall approximate capacity of 170 Mt; mine plan will send 163 Mt of waste to the facility.
15.5    Tailings Storage Facilities
The TSF is constructed in the Subri stream drainage. The northern upstream embankment serves as a downstream dam for a water storage facility. The TSF is operated as a zero-discharge facility; all water is returned to the process facility for reuse. The main embankment has been constructed in stages.
The TSF is monitored monthly with both a network of piezometers to determine phreatic water levels in the embankments as well as via settlement pins. Drone survey and pool volume measurements are also conducted on monthly basis. These data are tabulated in a report that is reviewed by both Newmont and the Engineer of Record with Jones and Wagner, a third-party consultant. Reporting follows the TSF operations, maintenance and surveillance (OMS) management plan which stipulates minimum monitoring requirements and triggers that require a further response.
Permitted capacities meet the required capacities for the present LOM. A raise to Cell 1 will allow operations to 2029; a raise to Cell 2, planned for 2030, will support the operations to the end of the LOM. The two TSF expansions, Cell 1 that would be expanded to a maximum capacity of 190 Mt and a newly constructed 50 Mt capacity Cell 2, and an associated 300 m water storage facility buffer require resettlement of a number of families within the facility footprints.
15.6    Water Management Structures
Water management infrastructure at Ahafo South for mine operations include the following:
Surface water management infrastructure: diversion channels around the pits and collection systems downstream of the WRSFs and stockpiles;
Pit runoff management infrastructure: in-pit and ex-pit sumps with a system centrifugal pumps and high-density polyethylene (HDPE) pipelines dewatering to holding and transfer ponds;
Groundwater management infrastructure: hybrid system of ex-pit dewatering wells and installations of arrays of horizontal drain holes.
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A reverse osmosis water treatment plant with a 50 L/s (feed) capacity was commissioned in August 2017. A second reverse osmosis water treatment plant is planned for execution in 2024, based on the current business plan BP22 and will have an additional 50 L/s (feed) capacity.
As part of the Ahafo water strategy an impacted water pond is also planned for execution in 2022, with commissioning in 2023.
15.7    Water Supply
Process water is sourced from a cross-valley embankment dam upstream from the TSF, which impounds water from a 28 km2 area of the Subri stream watershed. Potable water for the mining operations and camps is produced from bore fields.
Water supplies are sufficient for current and planned development needs. The Ahafo mine operates with an excess water balance resulting from the accumulation of seasonal rainfall contacting the mining operation. The excess is stored in the mined-out Apensu pit, which has an area of 350,000 m2.
15.8    Camps and Accommodation
Two types of accommodation are available. Camp A, originally the construction camp at the plant site, hosts about 300 people, consisting of site visitors and long-term employees. Newmont constructed the Mensah Kumtah Village, near Kenyasi, for expatriate families and Ghanaian management staff. Workers who do not live in company housing receive housing allowances.
15.9    Power and Electrical
Newmont Africa in Ghana receives power purchased from the Volta River Authority’s (VRA) electricity generation thermal facilities near the Ghanaian coast and at the Akosombo Dam hydroelectric facility.
Power is delivered to Ahafo South via GRIDCO’s 161 kV transmission line into the Ahafo (Kenyasi) Substation where voltage is dropped from 161 kV down to 11 kV for use at the Ahafo complex. GRIDCO currently has three 161 kV lines that deliver power to the Kenyasi Substation at Ahafo; two from Kumasi, and one from Kumasi via Techiman/Sunyani. Each transmission line is capable of delivering power sufficient to satisfy Ahafo’s current peak startup power demand of about 35 MW, as the capacity of each of these lines is approximately 120 MW. The two direct lines from Kumasi do not have additional power demand other than Newmont’s load at the Kenyasi substation. The third line (from Kumasi via Sunyani) supplies Techiman, then Sunyani, on its route to service Kenyasi substation.
Newmont has also installed emergency power generating capacity, consisting of 27 MW at Ahafo South to meet any power challenges.
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16.0    MARKET STUDIES AND CONTRACTS
16.1    Markets
Newmont has established contracts and buyers for the doré products from the Ahafo Operations, and has an internal corporate marketing group that monitors markets for its key products. Together with public documents and analyst forecasts, these data support that there is a reasonable basis to assume that for the LOM plan, that the key products will be saleable at the assumed commodity pricing.
There are no agency relationships relevant to the marketing strategies used.
Product valuation is included in the economic analysis in Chapter 19, and is based on a combination of the metallurgical recovery, commodity pricing, and consideration of processing charges.
The doré is not subject to product specification requirements.
16.2    Commodity Price Forecasts
Newmont uses a combination of historical and current contract pricing, contract negotiations, knowledge of its key markets from a long operations production record, short-term versus long-term price forecasts prepared by Newmont’s internal corporate marketing group, public documents, and analyst forecasts when considering long-term commodity price forecasts.
Higher metal prices are used for the mineral resource estimates to ensure the mineral reserves are a sub-set of, and not constrained by, the mineral resources, in accordance with industry-accepted practice.
The long-term commodity price and exchange rate forecasts are:
Mineral reserves:
Gold: US$1,200/oz;
US$:Gh$: 5.75.
Mineral resources:
Gold: US$1,400/oz;
US$:Gh$: 5.75.
16.3    Contracts
Newmont’s doré is sold on the spot market, by marketing experts retained in-house by Newmont. The terms contained within the sales contracts are typical and consistent with standard industry practice and are consistent with doré sold from other Newmont operations.
The largest in-place contracts other than for product sales cover items such as bulk commodities, operational and technical services, mining and process equipment, and administrative support services. Contracts are negotiated and renewed as needed. Contract terms are typical of similar contracts in Ghana.
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17.0    ENVIRONMENTAL STUDIES, PERMITTING, AND PLANS, NEGOTIATIONS, OR AGREEMENTS WITH LOCAL INDIVIDUALS OR GROUPS
17.1    Introduction
Newmont is committed to design, develop, and operate the Ahafo Operations in a manner that will preserve human health, the environment and stakeholder relationships. A variety of environmental management activities were developed and are being implemented during all operational phases. Newmont’s intent is to eliminate, offset, or reduce to acceptable levels any adverse environmental impacts through management programs, resource-specific mitigation measures, monitoring plans, and implementation schedules.
17.2    Baseline and Supporting Studies
Baseline and supporting environmental studies were completed to assess both pre-existing and ongoing site environmental conditions, as well as to support decision-making processes during operations start-up. Characterization studies were completed for climate, air quality, hydrology and surface water quality, hydrogeology, flora, fauna, soils, agriculture and land use, and the socioeconomic environment.
Plans were developed and implemented to address aspects of operations such as waste and fugitive dust management, spill prevention and contingency planning, water management, and noise levels.
17.3    Environmental Considerations/Monitoring Programs
Procedures for operational environmental and social monitoring of the Ahafo Operations area were established to ensure mining activities have minimal or acceptable levels of impact to surrounding areas. The primary environmental resource monitored at Ahafo is water – both surface water and groundwater. Other resource monitoring being conducted by Newmont includes fugitive dust, point source emission, meteorological parameters, noise and vibration, revegetation progress, surface water run-off quantity and quality, mine pit conditions, waste rock disposal, TSF decant water quantity and quality, and environmental geochemistry of ore, waste rock and tailings. Data from these monitoring programs are used to evaluate potential impacts of mining operations and to continually update plans for long-term monitoring and reclamation.
17.4    Closure and Reclamation Considerations
In 2003, Newmont developed a conceptual closure and reclamation plan for the Ahafo South Mine Project Environmental Impact Statement (EIS) (SGS 2004) in compliance with requirements of the Environmental Protection Agency (EPA). The EIS was approved by the EPA in April 2005. A Draft Reclamation Plan to begin the process of formalizing the conceptual plan presented in the EIS was undertaken later in 2005. The Draft Reclamation Plan, subsequently approved for implementation, included descriptions of mining and ore processing operations,
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WRSFs, TSF, water-related structures, and the reclamation and monitoring plans for these facilities.
Under EPA requirements, Newmont is required to provide updates to the reclamation plan as mine development proceeds. These updates are to include revisions or modifications to the closure and reclamation plan necessary to address actual site conditions. An updated Closure and Reclamation Plan was developed in 2019 that covers closure of the Subika Underground and ancillary infrastructure as well as the prior existing facilities.
A Reclamation Security Agreement (RSA) between the EPA and Newmont was signed in April 2008 to outline the various objectives and targets as guidance for the plan.
The EPA requires a Reclamation Bond to be posted as part of any mine permitting process. The bond is required to provide financial surety against non-compliance under the approved Closure and Reclamation Plan and is required within six months after the start of operations.
As part of the reclamation and security agreement (environmental bond) with the Ghanaian Government, Newmont has provided a cumulative (project to date) cash deposit of US$12.66 M.
The closure cost estimate used in the economic analysis in Chapter 19 is US$0.2 B.
17.5    Permitting
All major permits and approvals are in place to support operations. Where permits have specific terms, renewal applications are made of the relevant regulatory authority as required, prior to the end of the permit term. The environmental permitting approach for the operations is based on Ghana’s EPA Environmental Impact Assessment (EIA) process and meets Newmont policy requirements and social and environmental standards.
Newmont monitors the regulatory regime in place at each of its operations and ensures that all permits are updated in line with any regulatory changes.
17.6    Social Considerations, Plans, Negotiations and Agreements
Newmont developed a public consultation and disclosure plan (PCDP) for the Ahafo Operations using guidelines and policies developed by the International Finance Corporation (IFC). The IFC requires public consultation as an on-going process to be conducted during the construction and operational phases of any project.
Newmont has well-established relationships, issue management approaches, engagement forums, and a suite of integrated social impact and opportunity-aligned strategic investment partnerships.
Newmont understands and accepts the importance of proactive community relations as an overriding principle in its day-to-day operations as well as future development planning. The company therefore structures its community relations activities to consider the concerns of the local people and endeavors to communicate and demonstrate its commitment in terms that can be best appreciated and understood to maintain the social license to operate.
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17.7    Qualified Person’s Opinion on Adequacy of Current Plans to Address Issues
Based on the information provided to the QP by Newmont (see Chapter 25), there are no material issues known to the QP. The Ahafo Operations are mature mining operations and currently has the social license to operate within its local communities.
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18.0    CAPITAL AND OPERATING COSTS
18.1    Introduction
Capital and operating cost estimates are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
18.2    Capital Cost Estimates
Capital costs are based on recent prices or operating data. Capital costs include funding for infrastructure, pit dewatering, development drilling, and permitting as well as miscellaneous expenditures required to maintain production. Mobile equipment re-build/replacement schedules and fixed asset replacement and refurbishment schedules are included. Sustaining capital costs reflect current price trends.
The overall capital cost estimate for the LOM is US$0.5 B, as summarized in Table 18-1.
18.3    Operating Cost Estimates
Operating costs are based on actual costs seen during operations and are projected through the LOM plan. Historical costs are used as the basis for operating cost forecasts for supplies and services unless there are new contract terms for these items. Labor and energy costs are based on budgeted rates applied to headcounts and energy consumption estimates.
Operating costs for the LOM are estimated at US$3.5 B, as summarized in Table 18-2. The estimated LOM open pit mining cost is US$2.57/t and the underground mining cost is US$52.27/t. Base processing costs are estimated at US$11.84 /t. In addition, total G&A costs are estimated at US$5.15/t.
Table 18-1:    Capital Cost Estimate
AreaUnitValue
Mining, open pitUS$ B0.2
Mining, undergroundUS$ B0.2
ProcessUS$ B0.1
TotalUS$ B0.5
Note: numbers have been rounded; totals may not sum due to rounding.
Table 18-2:    Operating Cost Estimate
AreaUnitValue
Mining, open pitUS$ B0.6
Mining, undergroundUS$ B1.2
ProcessUS$ B1.2
G&AUS$ B0.5
TotalUS$ B3.5
Note: numbers have been rounded; totals may not sum due to rounding.
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19.0    ECONOMIC ANALYSIS
19.1    Methodology Used
The financial model that supports the mineral reserve declaration is a standalone model that calculates annual cash flows based on scheduled ore production, assumed processing recoveries, metal sale prices and Gh$/US$ exchange rate, projected operating and capital costs and estimated taxes.
The financial analysis is based on an after-tax discount rate of 8%. All costs and prices are in unescalated “real” dollars. The currency used to document the cash flow is US$.
All costs are based on the 2022 budget. Revenue is calculated from the recoverable metals and long-term metal price and exchange rate forecasts.
19.2    Financial Model Parameters
The economic analysis is based on the metallurgical recovery predictions in Chapter 10.4, the mineral reserve estimates in Chapter 13, the mine plan discussed in Chapter 14, the commodity price forecasts in Chapter 16, closure cost estimates in Chapter 17.4, and the capital and operating costs outlined in Chapter 18. Royalties were summarized in Chapter 3.9.
Taxes are based on Newmont’s existing agreement with the government of Ghana.
The economic analysis is based on 100% equity financing and is reported on a 100% project ownership basis. The economic analysis assumes constant prices with no inflationary adjustments.
The NPV8% is $1.2 B. As the cashflows are based on existing operations where all costs are considered sunk to 1 January 2022, considerations of payback and internal rate of return are not relevant.
A summary of the financial results is provided in Table 19-1. An annualized cashflow statement is provided in Table 19-2. In these tables, EBITDA = earnings before interest, taxes, depreciation and amortization. The active mining operation ceases in 2032; however, closure costs are estimated to 2036.
19.3    Sensitivity Analysis
The sensitivity of the Project to changes in metal prices, exchange rate, sustaining capital costs and operating cost assumptions was tested using a range of 25% above and below the base case values (Figure 19-1).
The Project is most sensitive to metal price changes, less sensitive to changes in operating costs, and least sensitive to changes in capital costs.
The sensitivity to gold grade mirrors the sensitivity to the gold price and is not shown.
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Table 19-1:    Cashflow Summary Table
ItemUnitValue
Metal prices
GoldUS$/oz1,200
Mined ore
TonnageM tonnes102
Gold gradeg/t1.86
Gold ouncesMoz6.1
Capital costsUS$B0.5
Costs applicable to salesUS$B4.2
Discount rate%8
Exchange rateUnited States dollar:Ghanaian cedi
(USD:GHS)
5.75
Free cash flowUS$B1.5
Net present valueUS$B1.2
Note: Numbers have been rounded; totals may not sum due to rounding. Table 19-1 contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbor created by such sections and other applicable laws. Please refer to the note regarding forward-looking information at the front of the Report. The cash flow is only intended to demonstrate the financial viability of the Project. Investors are cautioned that the above is based upon certain assumptions which may differ from Newmont’s long-term outlook or actual financial results, including, but not limited to commodity prices, escalation assumptions and other technical inputs. For example, Table 19-1 uses the price assumptions stated in the table, including a gold commodity price assumption of US$1,200/oz, which varies significantly from current gold prices and the assumptions that Newmont uses for its long-term guidance. Please be reminded that significant variation of metal prices, costs and other key assumptions may require modifications to mine plans, models, and prospects.
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Table 19-2:    Annualized Cashflow (2022–2036)
ItemUnitsTotal202220232024202520262027202820292030203120322033203420352036
Material minedM tonnes294.435.134.231.434.231.934.826.618.010.31.60.00.00.00.00.0
Ore processedM tonnes101.910.39.89.89.89.69.49.89.89.58.95.20.00.00.00.0
Contained gold, processedMoz6.10.70.80.90.50.50.50.50.60.50.40.10.00.00.00.0
Processed ore gold gradeg/t1.862.042.552.801.681.601.661.722.031.681.300.86
Recovered goldMoz5.60.60.70.80.50.50.50.50.60.50.30.1
Recovery, gold%9292939392929291909089850000
Net revenue US$ billion6.70.70.91.00.60.50.60.60.70.60.40.10.00.00.00.0
Costs applicable to salesUS$ billion-4.2-0.5-0.5-0.5-0.4-0.4-0.4-0.4-0.4-0.3-0.3-0.10.00.00.00.0
Other expensesUS$ billion0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0
EBITDAUS$ billion2.50.30.40.50.20.10.10.20.30.20.10.00.00.00.00.0
Operating cash flow (after estimated taxes and other adjustments)US$ billion2.00.30.40.40.10.20.10.20.20.20.00.0-0.10.00.00.0
Total capitalUS$ billion-0.5-0.1-0.1-0.1-0.1-0.1-0.10.00.00.00.00.00.00.00.00.0
Free cash flowUS$ billion1.50.20.30.40.00.10.00.20.20.10.00.0-0.10.00.00.0
Note: Numbers have been rounded; totals may not sum due to rounding. EBITDA = earnings before interest, taxes, depreciation and amortization. Table 19-2 contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbor created by such sections and other applicable laws. Please refer to the note regarding forward-looking information at the front of the Report. The cash flow is only intended to demonstrate the financial viability of the Project. Investors are cautioned that the above is based upon certain assumptions which may differ from Newmont’s long-term outlook or actual financial results, including, but not limited to commodity prices, escalation assumptions and other technical inputs. For example, Table 19-2 uses the price assumptions stated in the table, including a gold commodity price assumption of US$1,200/oz, which varies significantly from current gold prices and the assumptions that Newmont uses for its long-term guidance. Please be reminded that significant variation of metal prices, costs and other key assumptions may require modifications to mine plans, models, and prospects.
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Figure 19-1:    NPV Sensitivity
a22225.jpg
Note: Figure prepared by Newmont, 2021. FCF = free cashflow; op cost = operating cost; cap cost = capital cost; NPV = net present value.
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20.0    ADJACENT PROPERTIES
This Chapter is not relevant to this Report.
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21.0    OTHER RELEVANT DATA AND INFORMATION
This Chapter is not relevant to this Report.
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22.0    INTERPRETATION AND CONCLUSIONS
22.1    Introduction
The QP notes the following interpretations and conclusions, based on the review of data available for this Report.
22.2    Property Setting
The Ahafo Operations are located in an area that has more than 15 years of mining activity. As a result, local and regional infrastructure and the supply of goods available to support mining operations is well-established. Personnel with experience in mining-related activities are available in the district. There are excellent transportation routes that access the Ahafo area.
There are no significant topographic or physiographic issues that would affect the Ahafo Operations. The Ahafo Operations area consists primarily of subsistence farms with small-scale commercial farming intermingled with areas of forest regrowth and remnants of secondary forest. The Project shares a boundary with the Bosumkese Forest Reserve, and the Amoma Shelterbelt Forest Reserve bisects the Ahafo mining lease.
Mining operations are conducted year-round.
22.3    Ownership
The Project is held through Newmont Ghana Gold Ltd., an indirectly-wholly owned Newmont subsidiary. The Government of Ghana has a 10% free-carried interest in the Ahafo Operations.
22.4    Mineral Tenure, Surface Rights, Water Rights, Royalties and Agreements
Newmont currently holds three mining licenses, and nine prospecting licenses that in total cover an area of 952 km2. The mining leases are current until 2031 and can be renewed by negotiation. The total area held under mining licenses is approximately 549 km2.
Newmont holds sufficient surface rights to execute the LOM plan.
Newmont holds permits to allow abstraction of groundwater, surface water, and water from the Tano River.
The Agreement between Newmont and the Government of Ghana defines and fixes, in specific terms, the effective corporate tax and royalty burden the Project (including Ahafo South and Ahafo North) will carry during operations. The Agreement establishes a fixed fiscal and legal regime, including sliding-scale royalty and tax rates for the duration of the Agreement’s stability period.
A 2% NSR is payable on all ounces produced from the Rank (formerly Ntotroso) concession to Franco Nevada. The majority of the Subika deposit, the northern portion of the Awonsu deposit, and the southern tip of the Amoma deposit fall within the Rank mining lease boundary.
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22.5    Geology and Mineralization
The Ahafo deposits are interpreted to be examples of orogenic gold deposits;
The geological understanding of the settings, lithologies, and structural and alteration controls on mineralization in the different zones is sufficient to support estimation of mineral resources and mineral reserves. The geological knowledge of the area is also considered sufficiently acceptable to reliably inform mine planning.
The mineralization style and setting are well understood and can support declaration of mineral resources and mineral reserves.
Newmont continues to actively explore in the immediate and near-mine areas.
22.6    History
The Ahafo Operations have over 15 years of active mining history, and exploration activities date back to 1989 when gold was first discovered.
22.7    Exploration, Drilling, and Sampling
The exploration programs completed to date are appropriate for the style of the mineralization within the Ahafo Operations area.
Drill holes are oriented with an inclination to accommodate the steeply-dipping nature of the Ahafo deposits, resulting in an intersection generally representing 75–85% of true width. Drilling is orientated generally perpendicular to the strike of the orebodies. Local variations may be present to accommodate infrastructure constraints.
Sampling methods, sample preparation, analysis and security conducted prior to Newmont’s interest in the operations were in accordance with exploration practices and industry standards at the time the information was collected. Current Newmont sampling methods are acceptable for mineral resource and mineral reserve estimation. Sample preparation, analysis and security for the Newmont programs are currently performed in accordance with exploration best practices and industry standards.
The quantity and quality of the lithological, geotechnical, collar and down-hole survey data collected during the exploration and delineation drilling programs are sufficient to support mineral resource and mineral reserve estimation. The collected sample data adequately reflect deposit dimensions, true widths of mineralization, and the style of the deposits. Sampling is representative of the gold and copper grades in the deposit, reflecting areas of higher and lower grades.
Density measurements are considered to provide acceptable density values for use in mineral resource and mineral reserve estimation.
The sample preparation, analysis, quality control, and security procedures used by the Ahafo Operations have changed over time to meet evolving industry practices. Practices at the time the information was collected were industry-standard, and frequently were industry-leading practices. The sample preparation, analysis, quality control, and security procedures are
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sufficient to provide reliable data to support estimation of mineral resources and mineral reserves.
The QA/QC programs adequately address issues of precision, accuracy and contamination. Modern drilling programs typically included blanks, duplicates and standard samples. QA/QC submission rates meet industry-accepted standards.
22.8    Data Verification
Newmont had data collection procedures in place that included several verification steps designed to ensure database integrity. Newmont staff also conducted regular logging, sampling, laboratory and database reviews. In addition to these internal checks, Newmont contracted independent consultants to perform laboratory, database and mine study reviews. The process of active database quality control and internal and external audits generally resulted in quality data.
The data verification programs concluded that the data collected from the Ahafo Operations area adequately support the geological interpretations and constitute a database of sufficient quality to support the use of the data in mineral resource and mineral reserve estimation.
Data that were verified on upload to the database are acceptable for use in mineral resource and mineral reserve estimation.
The QP receives and reviews monthly reconciliation reports from the mine site. Through the review of these reconciliation factors the QP is able to ascertain the quality and accuracy of the data and its suitability for use in the assumptions underlying the mineral resource and mineral reserve estimates.
22.9    Metallurgical Testwork
Industry-standard studies were performed as part of process development and initial mill design. Subsequent production experience and focused investigations guided mill alterations and process changes. Testwork programs, both internal and external, continue to be performed to support current operations and potential improvements. From time to time, this may lead to requirements to adjust cut-off grades, modify the process flowsheet, or change reagent additions and plant parameters to meet concentrate quality, production, and economic targets.
Samples selected for testing were representative of the various types and styles of mineralization. Samples were selected from a range of depths within the deposit. Sufficient samples were taken so that tests were performed on sufficient sample mass.
Recovery factors estimated are based on appropriate metallurgical testwork, and are appropriate to the mineralization types and the selected process routes. The forecast LOM gold recovery varies by deposit, ranging from 81–94%. These forecasts do not include the application of recovery degradation to long-term stockpiles.
The mill throughput and associated recovery factors are considered appropriate to support mineral resource and mineral reserve estimation, and mine planning.
The Ahafo Operations produce clean ores containing low levels of problematic elements.
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22.10    Mineral Resource Estimates
Newmont has a set of protocols, internal controls, and guidelines in place to support the mineral resource estimation process, which the estimators must follow.
Estimation was performed by Newmont personnel. All mineralogical information, exploration boreholes and background information were provided to the estimators by the geological staff at the mines or by exploration staff. Modelling and resource estimates were performed in Vulcan software.
Mineral resources are reported using the mineral resource definitions set out in SK1300, and are reported exclusive of those mineral resources converted to mineral reserves. The reference point for the estimate is in situ. Mineral resources are reported on a 100% basis. The Government of Ghana has a 10% free-carried interest in the Project. Newmont has a 90% interest.
Factors that may affect the mineral resource estimate include: changes to long-term metal price assumptions; changes in local interpretations of mineralization geometry and continuity of mineralized zones; changes to geological and grade shape and geological and grade continuity assumptions; changes to input parameters used in the pit shells and stope outlines constraining the mineral resources; changes to the cut-off grades used to constrain the estimates; variations in geotechnical, mining, and processing recovery assumptions; and changes to environmental, permitting and social license assumptions.
22.11    Mineral Reserve Estimates
Mineral reserves were converted from measured and indicated mineral resources. Inferred mineral resources were set to waste. Estimation was performed by Newmont personnel.
All current mineral reserves will be exploited using open pit mining methods, underground mining methods, or are in stockpiles. Mineral reserves amenable to open pit mining methods were estimated assuming open pit methods with conventional methods for drilling, blasting, loading with hydraulic shovels and haulage by large trucks. Mineral reserves amenable to underground mining methods were estimated assuming conventional stoping methods. Mineral resources were converted to mineral reserves using a detailed mine plan, an engineering analysis, and consideration of appropriate modifying factors. Modifying factors include the consideration of dilution and ore losses, open pit and underground mining methods, metallurgical recoveries, permitting and infrastructure requirements.
Mineral reserves are reported using the mineral resource definitions set out in SK1300. The reference point for the estimate is the point of delivery to the process facilities. Mineral reserves are reported on a 100% basis. The Government of Ghana has a 10% free-carried interest in the Project. Newmont has a 90% interest.
Factors that may affect the mineral reserve estimates include: changes to the gold price assumptions; changes in the metallurgical recovery factors; changes to the operating cut-off assumptions for mill feed or stockpile feed; changes to the input assumptions used to derive the open pit and stope outlines and the mine plan that is based on those open pit and stope designs; changes to operating, and capital assumptions used, including changes to input cost assumptions such as consumables, labor costs, royalty and taxation rates; variations in
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geotechnical, hydrogeological, dilution and mining assumptions; including changes to pit phase or stope designs as a result of changes to geotechnical, hydrogeological, and engineering data used; changes to the assumed permitting and regulatory environment under which the mine plan was developed; ability to maintain mining permits and/or surface rights; ability to permit the expanded TSF and obtain the operations certificate for current and future underground operations; ability to maintain social and environmental license to operate.
22.12    Mining Methods
Mining operations can be conducted year-round.
Open pit mining is conducted using conventional techniques and an Owner-operated conventional truck and shovel fleet. The open pit mine plans are appropriately developed to maximize mining efficiencies, based on the current knowledge of geotechnical, hydrological, mining and processing information on the Project.
Underground mining is currently conducted using conventional stoping methods, and conventional mechanized equipment. Underground mining is conducted by a contractor. The underground mine plans are based on the current knowledge of geotechnical, hydrological, mining and processing information in the Subika underground area.
The open pit LOM plan currently envisages mining at an average rate of approximately 26 Mt/a for nine years and peaking at 32.15 Mt/a in 2022 with a maximum rate of advance by pit stage of eight benches per annum and an average of six benches (48 m) per year. The mine life will extend to 2030 with material mined from the open pit. Milling will cease in 2032 after treatment of stockpiled ore.
The underground LOM plan currently envisages a production rate of 2.43 Mt/a for an eight-year period, with underground mining ending in 2030.
As part of day-to-day operations, Newmont will continue to perform reviews of the mine plan and consider alternatives to, and variations within, the plan. Alternative scenarios and reviews may be based on ongoing or future mining considerations, evaluation of different potential input factors and assumptions, and corporate directives.
22.13    Recovery Methods
The process plant design was based on a combination of metallurgical testwork, previous study designs, previous operating experience. The design is conventional to the gold industry and has no novel parameters.
The plant will produce variations in recovery due to the day-to-day changes in ore type or combinations of ore type being processed. These variations are expected to trend to the forecast recovery value for monthly or longer reporting periods.
22.14    Infrastructure
The majority of the key infrastructure to support the mining activities envisaged in the LOM is in place.
A stockpiling strategy is practiced to defer lower-grade ores to the end of mine life.
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The LOM plan assumes that only two WRSFs, at Subika East and Awonsu, will be active for the remainder of the mine life.
The TSF is operated as a zero-discharge facility; all water is returned to the process facility for reuse. Permitted capacities meet the required capacities for the present LOM. A raise to Cell 1 will allow operations to 2029; a raise to Cell 2, planned for 2030, will support the operations to the end of the LOM. The two TSF expansions, Cell 1 that would be expanded to a maximum capacity of 190Mt and a newly constructed 50 Mt capacity Cell 2, and an associated 300 m water storage facility buffer require resettlement of a number of families within the facility footprints.
The existing infrastructure, staff availability, existing power, water, and communications facilities, and the methods whereby goods are transported to the mine are all in place and well-established, and can support the estimation of mineral resources and mineral reserves.
Personnel commute from surrounding settlements or live in purpose-built accommodation villages.
Water management infrastructure for mine operations includes pit runoff, surface water and groundwater management infrastructure. A reverse osmosis water treatment plant is operational.
Power is sourced from the Volta River Authority’s electricity generation thermal facilities. Three 161 kV lines feed into the Kenyasi Substation at Ahafo. Each transmission line is capable of delivering power sufficient to satisfy Ahafo’s current peak startup power demand of about 35 MW, as the capacity of each of these lines is approximately 120 MW. Newmont has installed emergency generating capacity.
22.15    Market Studies
Newmont has established contracts and buyers for its doré products, and has an internal marketing group that monitors markets for its key products. Together with public documents and analyst forecasts, there is a reasonable basis to assume that for the LOM plan, the doré will be saleable at the assumed commodity pricing.
Newmont’s doré is sold on the spot market, by marketing experts retained in-house by Newmont. The terms contained within the sales contracts are typical and consistent with standard industry practice, and are similar to contracts for the supply of doré elsewhere in the world.
Newmont uses a combination of historical and current contract pricing, contract negotiations, knowledge of its key markets from a long operations production record, short-term versus long-term price forecasts prepared by Newmont’s internal marketing group, public documents, and analyst forecasts when considering long-term commodity price forecasts. Higher metal prices are used for the mineral resource estimates to ensure the mineral reserves are a sub-set of, and not constrained by, the mineral resources, in accordance with industry-accepted practice.
The largest in-place contracts other than for product sales cover items such as bulk commodities, operational and technical services, mining and process equipment, and administrative support services. Contracts are negotiated and renewed as needed. Contract terms are typical of similar contracts in Ghana.
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22.16    Environmental, Permitting and Social Considerations
Baseline and supporting environmental studies were completed to assess both pre-existing and ongoing site environmental conditions, as well as to support decision-making processes during operations start-up. Characterization studies were completed for climate, air quality, hydrology and surface water quality, hydrogeology, flora, fauna, soils, agriculture and land use, and the socioeconomic environment.
Plans were developed and implemented to address aspects of operations such as waste and fugitive dust management, spill prevention and contingency planning, water management, and noise levels.
The key monitoring areas are surface water and ground water. Other resource monitoring being conducted by Newmont includes fugitive dust, point source emission, meteorological parameters, noise and vibration, revegetation progress, surface water run-off quantity and quality, mine pit conditions, waste rock disposal, TSF decant water quantity and quality, and environmental geochemistry of ore, waste rock and tailings.
The EPA requires a Reclamation Bond to be posted as part of any mine permitting process. The bond is required to provide financial surety against non-compliance under the approved Closure and Reclamation Plan and is required within six months after the start of operations. As part of the reclamation and security agreement (environmental bond) with the Ghanaian Government, Newmont has provided a cumulative (project to date) cash deposit of US$12.66 M. The closure cost estimate used in the economic analysis in Chapter 19 is US$0.2 B.
All major permits and approvals are either in place or Newmont expects to obtain them in the normal course of business. Where permits have specific terms, renewal applications are made of the relevant regulatory authority as required, prior to the end of the permit term.
Newmont has well-established relationships, engagement forums, and a suite of integrated social impact and opportunity-aligned strategic investment partnerships. Newmont understands and accepts the importance of proactive community relations as an overriding principle in its day-to-day operations as well as future development planning. The company therefore structures its community relations activities to consider the concerns of the local people and endeavors to communicate and demonstrate its commitment in terms that can be best appreciated and understood to maintain the social license to operate
22.17    Capital Cost Estimates
Capital costs were based on recent prices or operating data and are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Capital costs included funding for infrastructure, pit dewatering, development drilling, and permitting as well as miscellaneous expenditures required to maintain production. Mobile equipment re-build/replacement schedules and fixed asset replacement and refurbishment schedules were included. Sustaining capital costs reflected current price trends.
The overall capital cost estimate for the LOM is US$0.5 B.
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22.18    Operating Cost Estimates
Operating costs were based on actual costs seen during operations and are projected through the LOM plan, and are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Historical costs were used as the basis for operating cost forecasts for supplies and services unless there are new contract terms for these items. Labor and energy costs were based on budgeted rates applied to headcounts and energy consumption estimates.
Operating costs for the LOM are estimated at US$3.5 B. The estimated LOM open pit mining cost is $2.57/t and the underground mining cost is $52.27/t. Base processing costs are estimated at $11.84 /t. In addition, total G&A costs are estimated at $5.15/t.
22.19    Economic Analysis
The NPV8% is $1.2 B. As the cashflows are based on existing operations where all costs are considered sunk to 1 January 2022, considerations of payback and internal rate of return are not relevant.
22.20    Risks and Opportunities
Factors that may affect the mineral resource and mineral reserve estimates were identified in Chapter 11.13 and Chapter 12.9 respectively.
22.20.1    Risks
The risks associated with the Ahafo Operations are generally those expected with open pit and underground mining operations and include the accuracy of the resource model, unexpected geological features that cause geotechnical issues, and/or operational impacts.
Other risks noted include:
The mineral reserve estimates are sensitive to metal prices. Lower metal prices than forecast in the LOM plan may require revisions to the mine plan, with impacts to the mineral reserve estimates and the economic analysis that supports the mineral reserve estimates;
Labor cost increases or productivity decreases could also impact the stated mineral reserves and mineral resources;
Geotechnical and hydrological assumptions used in mine planning are based on historical performance, and to date historical performance has been a reasonable predictor of current conditions. Any changes to the geotechnical and hydrological assumptions could affect mine planning, affect capital cost estimates if any major rehabilitation is required due to a geotechnical or hydrological event, affect operating costs due to mitigation measures that may need to be imposed, and impact the economic analysis that supports the mineral reserve estimates;
Expectations as to the performance of the Subika underground mining method;
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Proposed community resettlement as part of the TSF planning for the LOM. There is a risk that this can be achieved with stakeholder approval and within the timelines anticipated and budgets allocated;
Galamsey (artisanal mining) activity can impact mine safety and operations;
Changes in climate could result in drought and associated potential water shortages that could impact operating costs and ability to operate;
Political risk from challenges to mining licenses and/or Newmont’s right to operate.
22.20.2    Opportunities
Opportunities include:
Conversion of some or all of the measured and indicated mineral resources currently reported exclusive of mineral reserves to mineral reserves, with appropriate supporting studies;
Upgrade of some or all of the inferred mineral resources to higher-confidence categories, such that such better-confidence material could be used in mineral reserve estimation;
Higher metal prices than forecast could present upside sales opportunities and potentially an increase in predicted Project economics;
Potential for new underground operations proximal to the current mineral resource and mineral reserve estimates, with the support of additional studies.
22.21    Conclusions
Under the assumptions presented in this Report, the Ahafo Operations have a positive cash flow, and mineral reserve estimates can be supported.
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23.0    RECOMMENDATIONS
As the Ahafo Operations are operating mines, the QP has no material recommendations to make.
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24.0    REFERENCES
24.1    Bibliography
Allen, L.E., 2018: Subika OP Resource Model Peer Review: draft internal Newmont memorandum, March 30, 2018, 2 p.
Amec Foster Wheeler, 2016: Ahafo South Operations, Ghana Reserve/Resource Audit Report; 15 September 2016, report prepared by Amec Foster Wheeler for Newmont, Project No. 189766, 252 p.
Anderson, T., 2018: Ahafo North Stage 2B Feasibility Report: internal Newmont report, 2 January, 2018, 563 p.
Baah-Danso, E., 2011: The Structural Evolution of the Subika Deposit, Ahafo, Sefwi Belt, Ghana: MSc thesis, University of Western Australia.
Bawden W.F., 2018: Preliminary Subika Extraction Ratio Guidance: memorandum prepared for Newmont by Bawden Engineering Ltd, 29 October, 2018, 14 p.
Bawden W.F., 2018: Subika Underground Project 2018 Geotechnical Review: report prepared for Newmont by Bawden Engineering Ltd, 27 December, 2018, 44 p.
Boye, A., Anderson, T., Jessen, M.H., Weedon, P., Nii-Armah, R., and Kappes, R., 2017: Ahafo North Competent Person Report: internal Newmont report, 31 December 2017, 48 p.
Canadian Institute of Mining, Metallurgy and Petroleum (CIM), 2019: Estimation of Mineral Resources and Mineral Reserves, Best Practice Guidelines: Canadian Institute of Mining, Metallurgy and Petroleum, November, 2019.
Canadian Institute of Mining, Metallurgy and Petroleum (CIM), 2014: CIM Definition Standards for Mineral Resources and Mineral Reserves: Canadian Institute of Mining, Metallurgy and Petroleum, May, 2014.
Canadian Securities Administrators (CSA), 2011: National Instrument 43-101, Standards of Disclosure for Mineral Projects, Canadian Securities Administrators.
Golder Associates (Accra), 2014a: Newmont Ahafo North Project, Ghana, Open Pit Slope Stage 2a Design – Susuan, Techire, and Subenso South Pits: report prepared by Golder for Newmont, July 2014 (Golder Project # 11613856).
Golder Associates (Accra), 2014b. Newmont Ahafo North Project, Ghana, Geotechnical Design of Yamfo NE and Subenso North Pits: report prepared by Golder for Newmont, July 2014 (Golder Project # 13614907).
Goldfarb, R.J., Baker, T., Dube, B., Groves, D.I., Hart, C.J R. and Gosselin, P., 2005: Distribution, Characters and Genesis of Gold Deposits in Metamorphic Terranes: Economic Geology 100th Anniversary Volume, Society of Economic Geologists, Littleton, Colorado, USA, pp. 407–450.
Groves, D.I., Goldfarb, R.J., Gebre-Mariam, M., Hagemann, S.G., and Robert, F. 1998: Orogenic gold deposits: A Proposed Classification in the Context of their Crustal Distribution and Relationship to Other Gold Deposit Types: Ore Geology Review, Special Issue, Vol. 13, pp. 7–27.
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Groves, D.I., Goldfarb, R.J., Robert, F., and Hart, C.J.R., 2003: Gold Deposits in Metamorphic Belts: Overview of Current Understanding, Outstanding Problems, Future Research, and Exploration Significance: Economic Geology, Vol. 98, pp. 1–29.
Inglis, R., 2015: Ahafo North Database Audit 2015: internal Newmont report, 29 May 2015, 41 p.
Jewbali, A., 2018: Review of the 2018 Subika UG model (Only Inclusion of SA1 material): internal Newmont memorandum, February 2018, 5 p.
Kappes, R., 2018: Ahafo South Recovery Upscale Factor Testwork and Analysis: internal Newmont report, January 2018, 13 p.
Kappes, R., 2018: Ahafo South Strategy Finer Grind Processing Options Update: internal Newmont report, January 2018, 37 p.
Kintzel, R., 2016: HOV – Cut-off Grade Strategy: internal Newmont report, 6 January 2016, 2 p.
Martos, M., 2017: GED Database Audit, Ghana Drillholes Database: internal Newmont report, 23 March, 2017, 59 p.
McFarlane, H., 2017: The Geodynamic and Tectonic Evolution of the Palaeoproterozoic Sefwi Greenstone Belt, West African Craton (Ghana): PhD thesis, Monash University, Australia and Université Toulouse 3 Paul Sabatier, France, 326 p.
Moritz, R., 2000: What Have We Learnt About Orogenic Lode Gold Deposits Over The Past 20 Years? : article posted to University of Geneva, Switzerland, website, 7 p. accessed 8 February 2010, http://www.unige.ch/sciences/terre/mineral/publications/onlinepub/moritz_gold_brgm_2000.doc.
Newmont, 2015a. Final Ahafo North Stage 2B Metallurgical Report: internal Newmont report prepared by Metallurgical Services for the Ahafo North Project Team, August 2015.
Newmont, 2015b: Ahafo North Mine Engineering Stage 2AB Bridge Report: internal Newmont report, August 28, 2015.
Newmont, 2016: NI 43-101 Technical Report for Ahafo Operations, Ghana: internal Newmont report, 6 July 2017, 197 p.
Newmont, 2017: Subika Phase 3 and Phase 4 Pit Wall Optimization Geotechnical Study: internal Newmont report, 2 October, 2017, 27 p.
Newmont, 2018a: Competent Person Report, Ahafo (Geology): draft internal Newmont report: 26 October, 2018, 16 p.
Newmont, 2018b: Competent Person Report, Ahafo (Metallurgy): draft internal Newmont report: 24 December, 2018, 20 p.
Newmont, 2018c: Competent Person Report, Ahafo (Open Pit Mine Engineering) 14 November, 2018, 17 p.
Newmont, 2018d: Competent Person Report, Ahafo (Apensu): draft internal Newmont report: 24 October, 2018, 18 p.
Newmont, 2018e: Competent Person Report, Ahafo (Resource Modelling): draft internal Newmont report: 24 December, 2018, 12 p.
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Newmont, 2019: Competent Person Report, Ahafo (Underground): draft internal Newmont report, 20 January, 2019, 54 p.
NewFields Mining and Energy Services, 2014a: Groundwater Modeling and Dewatering Study, Model Update to Well Installation and Aquifer Testing at Yamfo Northeast and Subenso North Deposits, Ahafo North Project, Ghana, West Africa: report prepared by NewFields for Newmont Ghana Gold, Ltd., April 2014.
NewFields Mining and Energy Services, 2014b: Subenso North and Yamfo Northeast Hydrogeologic Characterization and Dewatering Evaluation, Well Installation and Hydraulic Testing Report, Ahafo North Project, Ghana, West Africa: report prepared by NewFields for Newmont Ghana Gold Ltd., January 2014.
NewFields Mining and Energy Services, 2015a: Preliminary Water Balance Model Results, Ahafo North: report prepared by NewFields for Newmont Ghana Gold, Ltd., May 4, 2015
NewFields Mining and Energy Services, 2015b: Tailings Storage Facility and Water Storage Dam Impoundment Engineering Design Report, Ahafo North Gold Project, Stage 2B: report prepared by NewFields for Newmont Ghana Gold, Ltd.
NewFields Mining and Energy Services, 2015c: Plant Site Soil and Foundation Recommendations, Ahafo North Gold Project, Stage 2B, Brong Ahafo Region, Ghana: report prepared by NewFields for Newmont Ghana Gold, Ltd.
NewFields Mining and Energy Services, 2016a: Surface Water Management Infrastructure Design Report, Ahafo North Project, Stage 2B: report prepared by NewFields for Newmont Ghana Gold, Ltd.
NewFields Mining and Energy Services, 2016b: Life-of-Mine Water Management Plan, Ahafo North Project, Brong Ahafo Region, Ghana: report prepared by NewFields for Newmont Ghana Gold, Ltd.
Optiro, 2014: Newmont Ghana Gold Limited Subika July 2014 Mineral Resource Independent Audit: report prepared by Optiro Pty Ltd for Newmont, 2 October, 2014, 59 p.
Seibel, G., 2016: Mineral Resource/Mineral Reserve Audit Input: report prepared by Amec Foster Wheeler for Newmont, 7 November, 2016, 47 p.
Seibel, G., 2015: Resource Model Review, Ahafo North: report prepared by AMEC for Newmont, 27 August, 2015, 321 p.
Seibel, G., 2012: Ahafo North Resource Audit Ghana: report prepared by AMEC for Newmont, Project No. 170934, November 30, 2012, 120 p.
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24.2    Abbreviations and Symbols
Abbreviation/SymbolTerm
AARLAnglo American Research Laboratory
AASatomic absorption spectrometry
Aiabrasion index
AMSAfrican Mining Services
AUGNGAhafo Unified Ghanaian National Grid
BLYBoart Longyear
BRGMBureau Recherché Geologiques et Minieres
BwiBond work index
CCDcounter-current decantation
CILcarbon-in-leach
CIMCanadian Institute of Mining, Metallurgy and Petroleum
CNwadweakly acid-dissociable cyanide
DTMdigital terrain model
EIAEnvironmental Impact Assessment
EISEnvironmental Impact Statement
EMPEnvironmental Management Plan
EPAEnvironmental Protection Agency
G&Ageneral and administrative
GEDGlobal Exploration Database
GencorGencor Ltd
GPSglobal positioning system
HercoHermitian correction
ICP-MSinductively coupled plasma–mass spectrometry
IFCInternational Finance Corporation
IPinduced polarization
IRAinter-ramp angle
La SourceLa Source Compagnie Miniere SAS
LHOSRlong-hole open stope retreat
LOMlife-of-mine
LOMPlife-of-mine plan
LVBLand Valuation Board
MFZ“Magic Fracture Zone”
MSPUMobile Sample Preparation Unit
NewFieldsNewFields Consultants Inc.
NewmontNewmont Corporation
NGGLNewmont Ghana Gold Ltd.
NGRLNewmont Golden Ridge Ltd.
NNnearest neighbor
NormandyNormandy Mining Limited
NPVnet present value
NSRnet smelter return
OKordinary kriging
PCDPpublic consultation and disclosure plan
PoOPlan of Operations
QA/QCQuality assurance and quality control
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Abbreviation/SymbolTerm
QPQualified Person
RABrotary air blast
RankRank Mining Company Limited
RARreturn air raise
RCreverse circulation
RLRelative level
RQDrock quality description
SAGsemi-autogenous grind
SGSpecific gravity
SLOSSublevel open stoping
SMESociety for Mining, Metallurgy and Exploration
TDEMtotal domain electromagnetics
TEMtransient electromagnetic
TSFtailing storage facility
USUnited States
VLVisual Logger
VLFvery low frequency
VRAVolta River Authority
24.3    Glossary of Terms
TermDefinition
aditA passageway or opening driven horizontally into the side of a hill generally for the purpose of exploring or otherwise opening a mineral deposit. An adit is open to the atmosphere at one end, a tunnel at both ends.
amphibolite facies
one of the major divisions of the mineral-facies classification of metamorphic rocks, the rocks of which formed under conditions of moderate to high temperatures (500° C, or about 950° F, maximum) and pressures. Amphibole, diopside, epidote, plagioclase, almandine and grossular garnet, and wollastonite are minerals typically found in rocks of the amphibolite facies
aquiferA geologic formation capable of transmitting significant quantities of groundwater under normal hydraulic gradients.
azimuthThe direction of one object from another, usually expressed as an angle in degrees relative to true north. Azimuths are usually measured in the clockwise direction, thus an azimuth of 90 degrees indicates that the second object is due east of the first.
ball millA piece of milling equipment used to grind ore into small particles. It is a cylindrical shaped steel container filled with steel balls into which crushed ore is fed. The ball mill is rotated causing the balls themselves to cascade, which in turn grinds the ore.
Bond work index (BWi)A measure of the energy required to break an ore to a nominal product size, determined in laboratory testing, and used to calculate the required power in a grinding circuit design.
carbon-in-leach (CIL)A method of recovering gold and silver from fine ground ore by simultaneous dissolution and adsorption of the precious metals onto fine carbon in an agitated tank of ore solids/solution slurry. The carbon flows counter currently to the head of the leaching circuit.
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TermDefinition
comminution/crushing/grindingCrushing and/or grinding of ore by impact and abrasion. Usually, the word "crushing" is used for dry methods and "grinding" for wet methods. Also, "crushing" usually denotes reducing the size of coarse rock while "grinding" usually refers to the reduction of the fine sizes.
concentrateThe concentrate is the valuable product from mineral processing, as opposed to the tailing, which contains the waste minerals. The concentrate represents a smaller volume than the original ore
counter-current decantation (CCD)A process where a slurry is thickened and washed in multiple stages, where clean water is added to the last thickener, and overflows from each thickener are progressively transferred to the previous thickener, countercurrent to the flow of thickened slurry.
crosscutA horizontal opening driven across the course of a vein or structure, or in general across the strike of the rock formation; a connection from a shaft to an ore structure.
crown pillarAn ore pillar at the top of an open stope left for wall support and protection from wall sloughing above
cut-off gradeA grade level below which the material is not “ore” and considered to be uneconomical to mine and process. The minimum grade of ore used to establish reserves.
data verificationThe process of confirming that data has been generated with proper procedures, has been accurately transcribed from the original source and is suitable to be used for mineral resource and mineral reserve estimation
declineA sloping underground opening for machine access from level to level or from the surface. Also called a ramp.
densityThe mass per unit volume of a substance, commonly expressed in grams/ cubic centimeter.
developmentOften refers to the construction of a new mine or; Is the underground work carried out for the purpose of reaching and opening up a mineral deposit. It includes shaft sinking, cross-cutting, drifting and raising.
dilutionWaste of low-grade rock which is unavoidably removed along with the ore in the mining process.
easement
Areas of land owned by the property owner, but in which other parties, such as utility companies, may have limited rights granted for a specific purpose.
electrowinning.The removal of precious metals from solution by the passage of current through an electrowinning cell. A direct current supply is connected to the anode and cathode. As current passes through the cell, metal is deposited on the cathode. When sufficient metal has been deposited on the cathode, it is removed from the cell and the sludge rinsed off the plate and dried for further treatment.
elutionRecovery of the gold from the activated carbon into solution before zinc precipitation or electro-winning.
encumbrance
An interest or partial right in real property which diminished the value of ownership, but does not prevent the transfer of ownership. Mortgages, taxes and judgements are encumbrances known as liens. Restrictions, easements, and reservations are also encumbrances, although not liens.
feasibility study
A feasibility study is a comprehensive technical and economic study of the selected development option for a mineral project, which includes detailed assessments of all applicable modifying factors, as defined by this section, together with any other relevant operational factors, and detailed financial analysis that are necessary to demonstrate, at the time of reporting, that extraction is economically viable. The results of the study may serve as the basis for a final decision by a proponent or financial institution to proceed with, or finance, the development of the project.
A feasibility study is more comprehensive, and with a higher degree of accuracy, than a pre-feasibility study. It must contain mining, infrastructure, and process designs completed with sufficient rigor to serve as the basis for an investment decision or to support project financing.
flowsheetThe sequence of operations, step by step, by which ore is treated in a milling, concentration, or smelting process.
footwallThe wall or rock on the underside of a vein or ore structure.
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TermDefinition
gravity separationExploitation of differences in the densities of particles to achieve separation. Machines utilizing gravity separation include jigs and shaking tables.
greenschist facies
one of the major divisions of the mineral facies classification of metamorphic rocks, the rocks of which formed under the lowest temperature and pressure conditions usually produced by regional metamorphism. Temperatures between 300 and 450 °C (570 and 840 °F) and pressures of 1 to 4 kilobars are typical. The more common minerals found in such rocks include quartz, orthoclase, muscovite, chlorite, serpentine, talc, and epidote
hanging wallThe wall or rock on the upper or top side of a vein or ore deposit.
indicated mineral resourceAn indicated mineral resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of adequate geological evidence and sampling. The term adequate geological evidence means evidence that is sufficient to establish geological and grade or quality continuity with reasonable certainty. The level of geological certainty associated with an indicated mineral resource is sufficient to allow a qualified person to apply modifying factors in sufficient detail to support mine planning and evaluation of the economic viability of the deposit.
inferred mineral resource
An inferred mineral resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of limited geological evidence and sampling. The term limited geological evidence means evidence that is only sufficient to establish that geological and grade or quality continuity is more likely than not. The level of geological uncertainty associated with an inferred mineral resource is too high to apply relevant technical and economic factors likely to influence the prospects of economic extraction in a manner useful for evaluation of economic viability.
A qualified person must have a reasonable expectation that the majority of inferred mineral resources could be upgraded to indicated or measured mineral resources with continued exploration; and should be able to defend the basis of this expectation before his or her peers.
initial assessmentAn initial assessment is a preliminary technical and economic study of the economic potential of all or parts of mineralization to support the disclosure of mineral resources. The initial assessment must be prepared by a qualified person and must include appropriate assessments of reasonably assumed technical and economic factors, together with any other relevant operational factors, that are necessary to demonstrate at the time of reporting that there are reasonable prospects for economic extraction. An initial assessment is required for disclosure of mineral resources but cannot be used as the basis for disclosure of mineral reserves
IPGeophysical method, induced polarization; used to directly detect scattered primary sulfide mineralization. Most metal sulfides produce IP effects, e.g., chalcopyrite, bornite, chalcocite, pyrite, pyrrhotite
life of mine (LOM)Number of years that the operation is planning to mine and treat ore, and is taken from the current mine plan based on the current evaluation of ore reserves.
lithogeochemistryThe chemistry of rocks within the lithosphere, such as rock, lake, stream, and soil sediments
measured mineral resourceA measured mineral resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of conclusive geological evidence and sampling. The term conclusive geological evidence means evidence that is sufficient to test and confirm geological and grade or quality continuity. The level of geological certainty associated with a measured mineral resource is sufficient to allow a qualified person to apply modifying factors, as defined in this section, in sufficient detail to support detailed mine planning and final evaluation of the economic viability of the deposit.
millIncludes any ore mill, sampling works, concentration, and any crushing, grinding, or screening plant used at, and in connection with, an excavation or mine.
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TermDefinition
mineral reserve
A mineral reserve is an estimate of tonnage and grade or quality of indicated and measured mineral resources that, in the opinion of the qualified person, can be the basis of an economically viable project. More specifically, it is the economically mineable part of a measured or indicated mineral resource, which includes diluting materials and allowances for losses that may occur when the material is mined or extracted.
The determination that part of a measured or indicated mineral resource is economically mineable must be based on a preliminary feasibility (pre-feasibility) or feasibility study, as defined by this section, conducted by a qualified person applying the modifying factors to indicated or measured mineral resources. Such study must demonstrate that, at the time of reporting, extraction of the mineral reserve is economically viable under reasonable investment and market assumptions. The study must establish a life of mine plan that is technically achievable and economically viable, which will be the basis of determining the mineral reserve.
The term economically viable means that the qualified person has determined, using a discounted cash flow analysis, or has otherwise analytically determined, that extraction of the mineral reserve is economically viable under reasonable investment and market assumptions.
The term investment and market assumptions includes all assumptions made about the prices, exchange rates, interest and discount rates, sales volumes, and costs that are necessary to determine the economic viability of the mineral reserves. The qualified person must use a price for each commodity that provides a reasonable basis for establishing that the project is economically viable.
mineral resource
A mineral resource is a concentration or occurrence of material of economic interest in or on the Earth’s crust in such form, grade or quality, and quantity that there are reasonable prospects for economic extraction.
The term material of economic interest includes mineralization, including dumps and tailings, mineral brines, and other resources extracted on or within the earth’s crust. It does not include oil and gas resources, gases (e.g., helium and carbon dioxide), geothermal fields, and water.
When determining the existence of a mineral resource, a qualified person, as defined by this section, must be able to estimate or interpret the location, quantity, grade or quality continuity, and other geological characteristics of the mineral resource from specific geological evidence and knowledge, including sampling; and conclude that there are reasonable prospects for economic extraction of the mineral resource based on an initial assessment, as defined in this section, that he or she conducts by qualitatively applying relevant technical and economic factors likely to influence the prospect of economic extraction.
mine take areaArea for which land holders have been fully compensated for moving from their land.
net present value (NPV)The present value of the difference between the future cash flows associated with a project and the investment required for acquiring the project. Aggregate of future net cash flows discounted back to a common base date, usually the present. NPV is an indicator of how much value an investment or project adds to a company.
net smelter return royalty (NSR)A defined percentage of the gross revenue from a resource extraction operation, less a proportionate share of transportation, insurance, and processing costs.
open pitA mine that is entirely on the surface. Also referred to as open-cut or open-cast mine.
open stopeIn competent rock, it is possible to remove all of a moderate sized ore body, resulting in an opening of considerable size. Such large, irregularly-shaped openings are called stopes. The mining of large inclined ore bodies often requires leaving horizontal pillars across the stope at intervals in order to prevent collapse of the walls.
ounce (oz) (troy)Used in imperial statistics. A kilogram is equal to 32.1507 ounces. A troy ounce is equal to 31.1035 grams.
overburdenMaterial of any nature, consolidated or unconsolidated, that overlies a deposit of ore that is to be mined.
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TermDefinition
plantA group of buildings, and especially to their contained equipment, in which a process or function is carried out; on a mine it will include warehouses, hoisting equipment, compressors, repair shops, offices, mill or concentrator.
preliminary feasibility study, pre-feasibility study
A preliminary feasibility study (prefeasibility study) is a comprehensive study of a range of options for the technical and economic viability of a mineral project that has advanced to a stage where a qualified person has determined (in the case of underground mining) a preferred mining method, or (in the case of surface mining) a pit configuration, and in all cases has determined an effective method of mineral processing and an effective plan to sell the product.
A pre-feasibility study includes a financial analysis based on reasonable assumptions, based on appropriate testing, about the modifying factors and the evaluation of any other relevant factors that are sufficient for a qualified person to determine if all or part of the indicated and measured mineral resources may be converted to mineral reserves at the time of reporting. The financial analysis must have the level of detail necessary to demonstrate, at the time of reporting, that extraction is economically viable
probable mineral reserveA probable mineral reserve is the economically mineable part of an indicated and, in some cases, a measured mineral resource. For a probable mineral reserve, the qualified person’s confidence in the results obtained from the application of the modifying factors and in the estimates of tonnage and grade or quality is lower than what is sufficient for a classification as a proven mineral reserve, but is still sufficient to demonstrate that, at the time of reporting, extraction of the mineral reserve is economically viable under reasonable investment and market assumptions. The lower level of confidence is due to higher geologic uncertainty when the qualified person converts an indicated mineral resource to a probable reserve or higher risk in the results of the application of modifying factors at the time when the qualified person converts a measured mineral resource to a probable mineral reserve. A qualified person must classify a measured mineral resource as a probable mineral reserve when his or her confidence in the results obtained from the application of the modifying factors to the measured mineral resource is lower than what is sufficient for a proven mineral reserve.
proven mineral reserveA proven mineral reserve is the economically mineable part of a measured mineral resource. For a proven mineral reserve, the qualified person has a high degree of confidence in the results obtained from the application of the modifying factors and in the estimates of tonnage and grade or quality. A proven mineral reserve can only result from conversion of a measured mineral resource.
qualified person
A qualified person is an individual who is a mineral industry professional with at least five years of relevant experience in the type of mineralization and type of deposit under consideration and in the specific type of activity that person is undertaking on behalf of the registrant; and an eligible member or licensee in good standing of a recognized professional organization at the time the technical report is prepared.
For an organization to be a recognized professional organization, it must:
(A)    Be either:
(1)    An organization recognized within the mining industry as a reputable professional association, or
(2)    A board authorized by U.S. federal, state or foreign statute to regulate professionals in the mining, geoscience or related field;
(B)    Admit eligible members primarily on the basis of their academic qualifications and experience;
(C)    Establish and require compliance with professional standards of competence and ethics;
(D)    Require or encourage continuing professional development;
(E)    Have and apply disciplinary powers, including the power to suspend or expel a member regardless of where the member practices or resides; and;
(F)    Provide a public list of members in good standing.
raiseA vertical or inclined underground working that has been excavated from the bottom upward
reclamationThe restoration of a site after mining or exploration activity is completed.
refiningA high temperature process in which impure metal is reacted with flux to reduce the impurities. The metal is collected in a molten layer and the impurities in a slag layer. Refining results in the production of a marketable material.
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TermDefinition
resistivityObservation of electric fields caused by current introduced into the ground as a means of studying earth resistivity in geophysical exploration. Resistivity is the property of a material that resists the flow of electrical current
rock quality designation (RQD)A measure of the competency of a rock, determined by the number of fractures in a given length of drill core. For example, a friable ore will have many fractures and a low RQD.
royaltyAn amount of money paid at regular intervals by the lessee or operator of an exploration or mining property to the owner of the ground. Generally based on a specific amount per tonne or a percentage of the total production or profits. Also, the fee paid for the right to use a patented process.
run-in-mine (RIM)Generally refers to the rehandle of material on surface close to the underground portal, where material is brought to surface and dumped by the underground trucks into stockpiles or into a metal removal plant before being loaded onto surface trucks and hauled for direct feed into the processing plant or hauled to a fun-of-mine stockpile. Run-in-mine refers to this being a mining rehandle before the run-of-mine, and is usually considered specific to one mine.
run-of-mine (ROM)Rehandle where the raw mine ore material is fed into the processing plant’s system, usually the crusher. This is where material that is not direct feed from the mine is stockpiled for later feeding. Run-of-mine relates to the rehandle being for any mine material, regardless of source, before entry into the processing plant’s system.
semi-autogenous grinding (SAG)A method of grinding rock into fine powder whereby the grinding media consists of larger chunks of rocks and steel balls.
shaftA vertical or inclined excavation for the purpose of opening and servicing a mine. It is usually equipped with a hoist at the top, which lowers and raises a conveyance for handling men and material
shrinkage stopingIn this method, mining is carried out from the bottom of an inclined or vertical ore body upwards, as in open stoping. However, most of the broken ore is allowed to remain in the stope in order both to support the stope walls and to provide a working platform for the overhead mining operations. Ore is withdrawn from chutes in the bottom of the stope in order to maintain the correct amount of open space for working. When mining is completed in a particular stope, the remaining ore is withdrawn, and the walls are allowed to collapse.
specific gravityThe weight of a substance compared with the weight of an equal volume of pure water at 4°C.
Squid TEMGeophysical method. High temperature superconducting quantum interference device (SQUID) magnetometers have been developed in a collaborative project between BHP and CSIRO specifically for application in airborne time domain electromagnetic (TEM) surveying to improve the performance of the system in detection of conductors with longer decay time constants, particularly in the presence of a conductive overburden
stopeAn excavation in a mine, other than development workings, made for the purpose of extracting ore.
tailingsMaterial rejected from a mill after the recoverable valuable minerals have been extracted.
triaxial compressive strengthA test for the compressive strength in all directions of a rock or soil sample
uniaxial compressive strengthA measure of the strength of a rock, which can be determined through laboratory testing, and used both for predicting ground stability underground, and the relative difficulty of crushing.
wackeA sandstone that consists of a mixed variety of angular and unsorted (or poorly sorted) mineral and rock fragments within an abundant matrix of clay and fine silt.
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25.0    RELIANCE ON INFORMATION PROVIDED BY THE REGISTRANT
25.1    Introduction
The QP fully relied on the registrant for the information used in the areas noted in the following sub-sections. The QP considers it reasonable to rely on the registrant for the information identified in those sub-sections, for the following reasons:
The registrant has been owner and operator of the mining operations for over 15 years;
The registrant has employed industry professionals with expertise in the areas listed in the following sub-sections;
The registrant has a formal system of oversight and governance over these activities, including a layered responsibility for review and approval;
The registrant has considerable experience in each of these areas.
25.2    Macroeconomic Trends
Information relating to inflation, interest rates, discount rates, exchange rates, and taxes was obtained from the registrant.
This information is used in the economic analysis in Chapter 19. It supports the assessment of reasonable prospects for economic extraction of the mineral resource estimates in Chapter 11, and inputs to the determination of economic viability of the mineral reserve estimates in Chapter 12.
25.3    Markets
Information relating to market studies/markets for product, market entry strategies, marketing and sales contracts, product valuation, product specifications, refining and treatment charges, transportation costs, agency relationships, material contracts (e.g., mining, concentrating, smelting, refining, transportation, handling, hedging arrangements, and forward sales contracts), and contract status (in place, renewals), was obtained from the registrant.
This information is used in the economic analysis in Chapter 19. It supports the assessment of reasonable prospects for economic extraction of the mineral resource estimates in Chapter 11, and inputs to the determination of economic viability of the mineral reserve estimates in Chapter 12.
25.4    Legal Matters
Information relating to the corporate ownership interest, the mineral tenure (concessions, payments to retain property rights, obligations to meet expenditure/reporting of work conducted), surface rights, water rights (water take allowances), royalties, encumbrances,
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easements and rights-of-way, violations and fines, permitting requirements, and the ability to maintain and renew permits was obtained from the registrant.
This information is used in support of the property description and ownership information in Chapter 3, the permitting and mine closure descriptions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
25.5    Environmental Matters
Information relating to baseline and supporting studies for environmental permitting, environmental permitting and monitoring requirements, ability to maintain and renew permits, emissions controls, closure planning, closure and reclamation bonding and bonding requirements, sustainability accommodations, and monitoring for and compliance with requirements relating to protected areas and protected species was obtained from the registrant.
This information is used when discussing property ownership information in Chapter 3, the permitting and closure discussions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
25.6    Stakeholder Accommodations
Information relating to social and stakeholder baseline and supporting studies, hiring and training policies for workforce from local communities, partnerships with stakeholders (including national, regional, and state mining associations; trade organizations; fishing organizations; state and local chambers of commerce; economic development organizations; non-government organizations; and, state and federal governments), and the community relations plan was obtained from the registrant.
This information is used in the social and community discussions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
25.7    Governmental Factors
Information relating to taxation and royalty considerations at the Project level, monitoring requirements and monitoring frequency, bonding requirements, violations and fines and was obtained from the registrant.
This information is used in the discussion on royalties and property encumbrances in Chapter 3, the monitoring, permitting and closure discussions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
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Nevada Operations
Nevada, USA
Technical Report Summary
Report current as of:
December 31, 2021
Qualified Person:
Mr. Donald Doe, RM SME.


Nevada Gold Mines Joint Venture
Nevada Operations
Technical Report Summary
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NOTE REGARDING FORWARD-LOOKING INFORMATION
This Technical Report Summary contains forward-looking statements within the meaning of the U.S. Securities Act of 1933 and the U.S. Securities Exchange Act of 1934 (and the equivalent under Canadian securities laws), that are intended to be covered by the safe harbor created by such sections. Such forward-looking statements include, without limitation, statements regarding Newmont’s expectation for its mines and any related development or expansions, including estimated cashflows, production, revenue, EBITDA, costs, taxes, capital, rates of return, mine plans, material mined and processed, recoveries and grade, future mineralization, future adjustments and sensitivities and other statements that are not historical facts.
Forward-looking statements address activities, events, or developments that Newmont expects or anticipates will or may occur in the future and are based on current expectations and assumptions. Additionally, forward-looking statements regarding Nevada Gold Mines are based largely upon information provided by the Operating Manager, Barrick, to Newmont. Although Newmont’s management believes that its expectations are based on reasonable assumptions, it can give no assurance that these expectations will prove correct. Such assumptions, include, but are not limited to: (i) there being no significant change to current geotechnical, metallurgical, hydrological and other physical conditions; (ii) permitting, development, operations and expansion of operations and projects being consistent with current expectations and mine plans, including, without limitation, receipt of export approvals; (iii) political developments in any jurisdiction in which Newmont operates being consistent with its current expectations; (iv) certain exchange rate assumptions being approximately consistent with current levels; (v) certain price assumptions for gold, copper, silver, zinc, lead and oil; (vi) prices for key supplies being approximately consistent with current levels; and (vii) other planning assumptions.
Important factors that could cause actual results to differ materially from those in the forward-looking statements include, among others, risks that estimates of mineral reserves and mineral resources are uncertain and the volume and grade of ore actually recovered may vary from our estimates, risks relating to fluctuations in metal prices; risks due to the inherently hazardous nature of mining-related activities; risks related to the jurisdictions in which we operate, uncertainties due to health and safety considerations, including COVID-19, uncertainties related to environmental considerations, including, without limitation, climate change, uncertainties relating to obtaining approvals and permits, including renewals, from governmental regulatory authorities; and uncertainties related to changes in law; as well as those factors discussed in Newmont’s filings with the U.S. Securities and Exchange Commission, including Newmont’s latest Annual Report on Form 10-K for the period ended December 31, 2021, which is available on newmont.com.
Newmont does not undertake any obligation to release publicly revisions to any “forward-looking statement,” including, without limitation, outlook, to reflect events or circumstances after the date of this document, or to reflect the occurrence of unanticipated events, except as may be required under applicable securities laws. Investors should not assume that any lack of update to a previously issued “forward-looking statement” constitutes a reaffirmation of that statement. Continued reliance on “forward-looking statements” is at investors’ own risk.
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CONTENTS
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TABLES
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FIGURES
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1.0    EXECUTIVE SUMMARY
1.1    Introduction
This technical report summary (the Report) was prepared for Newmont Corporation (Newmont) on the Nevada Operations (Nevada Operations or the Project) that are located in Nevada.
The Project is operated as a joint venture (JV) through Nevada Gold Mines, LLC (NGM). Barrick Gold Corporation (Barrick) is the JV operator and owns 61.5%, with Newmont owning the remaining 38.5% JV interest.
1.2    Terms of Reference
The Report was prepared to be attached as an exhibit to support mineral property disclosure, including mineral resource and mineral reserve estimates, for the Nevada Operations in Newmont’s Form 10-K for the year ending December 31, 2021.
The Nevada Operations consist of 10 underground and 12 open pit active mining operations, two autoclave facilities, two roasting facilities, two oxide mills, two flotation plants and nine heap leach facilities, forming five major mining/processing complexes centered at Carlin, Cortez, Long Canyon, Phoenix and Turquoise Ridge.
Active open pit mining operations include Crossroads, Gold Quarry, Goldstrike, Goldstar, Long Canyon, Phoenix, Pipeline, and Vista. Two deposits, the Mega Pit at Turquoise Ridge and the South Arturo deposit at Carlin that are planned to be mined using open pit methods, are not currently active, but are planned to be mined in 2022–2023. Active underground mining operations include Cortez Hills underground, Exodus, Goldstrike, El Niño, Leeville, Pete Bajo, Turquoise Ridge Underground, and Vista. Underground exploration development is underway at the Goldrush deposit.
Unless otherwise indicated, all financial values are reported in United States (US) currency (US$). Units may be in either metric or US customary units as identified in the text. Mineral resources and mineral reserves are reported using the definitions in Subpart 229.1300 – Disclosure by Registrants Engaged in Mining Operations in Regulation S–K 1300 (SK1300). The Report uses US English. The Report contains forward-looking information; refer to the note regarding forward-looking information at the front of the Report.
1.3    Property Setting
The Nevada Operations are centered on northern Nevada, and are bisected by Interstate 80 (I-80), which provides access to most of the Project area.
Access for the Carlin Complex is generally from Elko, 26 miles west on I-80 to Carlin which is the closest town to the mine sites. In addition, various alternate access routes use Nevada State Route 766, and Elko and Eureka County roads. These roads are well maintained, and most are paved.
The Cortez Complex is reached by travelling approximately 32 miles east from the town of Battle Mountain on the I-80. Alternative access is from Elko, Nevada, approximately 45 miles
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west to the Beowawe exit, then approximately 35 miles south on Nevada State Route 306, which extends southward from I-80.
The Long Canyon Complex is accessed from either the I-80 east-bound route through Wells or I-80 west-bound through Wendover, with the main entrance just off the Oasis/Montello interchange. The mine area is within one mile of the freeway with the pit area about four miles west.
The Phoenix Complex is accessed from I-80 at Battle Mountain, traveling approximately 12 miles south on the paved Nevada State Route 305, and then west a short distance on a paved/gravel county access road.
The Turquoise Ridge Complex is accessed from a turnoff at the settlement of Golconda, 25 miles east of Winnemucca, then following a paved road for a further 25 miles, and thereafter by an improved gravel road to the mine gates. It is then 10 miles to the west mine gate and 25 miles to the east mine gate.
The Nevada operations are crossed by a network of gravel roads, providing easy access to various portions of the sites. The majority of the roads are suitable for all-weather conditions; however, in extreme winter conditions, roads may be closed for snow removal.
The Union Pacific Rail line runs parallel to I-80. NGM operates the Dunphy Rail Terminal, which is located 27 miles west of Carlin, for the transportation of bulk commodities such as lubricants, fuel, and ball mill consumables. These bulk commodities are road-transported from the Dunphy Rail Terminal to each site using commercial trucking services. Elko is serviced by commercial flights to Salt Lake City, Utah.
The Nevada Operations are located in a high desert region. Operations are conducted year-round.
The Project is located in a major mining region and local resources including labor, water, power, natural gas, and local infrastructure for transportation of supplies are well established. Mining has been an active industry in northern Nevada for more than 150 years. Elko (pop. 20,300) is a local hub for mining operations in northern Nevada and services necessary for mining operations are readily available.
1.4    Ownership
NGM is a JV between Barrick and Newmont. Barrick is the JV operator and has a 61.5% interest, with Newmont owning the remaining 38.5% interest. The JV area of interest (AOI) covers a significant portion of northern Nevada.
1.5    Mineral Tenure, Surface Rights, Water Rights, Royalties and Agreements
The Nevada Operations currently includes 15 plans of operations (PoOs) and eight exploration PoOs. The area includes private land (surface and minerals) owned or controlled by NGM, and land owned by the federal government that is administered by the Bureau of Land Management (BLM).
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Within the operations PoO areas are 9,205 lode, millsite, placer and patented claims covering an area of approximately 163,214 acres. Within the exploration PoO areas, 2,180 lode, millsite, placer and patented claims cover an area of approximately 43,363 acres. Between the operations and the exploration PoOs, NGM holds a total of 11,385 claims covering an area of approximately 206,578 acres.
In addition, NGM holds a number of fee properties, within the operations and exploration PoOs. Collectively, these cover an area of approximately 78,621 acres.
On 11 March, 2019, Barrick and Newmont announced the formation of the NGM JV. Newmont, Barrick, and their respective affiliates that held properties in the AOI contributed to NGM the respective rights, titles and interests in, to, or under, all properties located in the AOI and any other assets, properties or rights located in Nevada. Newmont and Barrick excluded certain development and exploration properties that the companies held within the AOI from the JV; these included Newmont’s Fiberline and Mike projects, and Barrick’s Fourmile project. The JV has a mechanism for the potential contribution of the excluded properties to NGM in the future.
A number of agreements exist with federal, state, and third-party entities and these are monitored using a land management database.
NGM holds all necessary surface rights for the current mining operations. Additional surface rights will be required, for future mining projects. The Goldrush PoO is currently moving through the National Environmental Policy Act (NEPA) process (see discussion in Chapter 1.17.3).
NGM currently maintains a combination of approximately 1,250 active surface and groundwater rights within 38 hydrographic basins. NGM holds all necessary water rights for the LOM plan envisaged in this Report.
There are numerous royalties that pertain to the active mines within the Nevada Operations. Royalty payments vary, as the payments depend upon actual tonnages mined, the amount of gold recovered from that mined material, the deposit being mined, the receiving entity, and the type of royalty. A number of the claims have inactive royalties attached, which are not currently triggered as the claims are not being mined. In connection with the formation of Nevada Gold Mines, each of Barrick and Newmont was granted a 1.5% net smelter returns royalty over the respective properties they contributed to the NGM JV. Each of these “retained royalties” is only payable once the aggregate production from the properties subject to the royalty exceeds the publicly reported mineral reserves and mineral resources as of December 31, 2018. The state of Nevada imposes a 5% Net Proceeds of Minerals Tax on the value of all minerals severed in the State. This tax is calculated and paid based on a prescribed net income formula. Separately, a Nevada Mining Education Tax based on gross revenue, was introduced during 2021.
1.6    Geology and Mineralization
The deposits that comprise the Nevada Operations are considered to be examples of Carlin-style carbonate-hosted disseminated gold–silver deposits and intrusion-related gold–copper–silver skarn deposits.
The geology of northern Nevada displays a complicated sequence of orogeny and tectonism. Within the Project area, the mineralization is reported based on five mining complexes, Carlin, Cortez, Long Canyon, Phoenix and Turquoise Ridge.
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Mineralization is hosted in lower Paleozoic sedimentary rocks or associated with Late Jurassic–Eocene intrusions. The majority of the deposits have some structural control, with mineralization commonly associated with the Roberts Mountains thrust. Pervasiveness and intensity of alteration varies both within and between gold deposits, depending on magnitude of the mineralizing system, nature of the host rock, and structural preparation.
Carlin Trend-style mineralization consists primarily of micrometer-sized gold and sulfides disseminated in zones of siliciclastic and decarbonated calcareous rocks and commonly associated with jasperoids. Mineralization is predominantly in the form of oxides, sulfides, or sulfide minerals in carbonaceous rocks, and the ore type determines how and where it is processed. Copper oxide mineralization locally contains minor amounts chalcanthite, malachite, chrysocolla, azurite, and lesser cuprite. In hypogene mineralization, chalcopyrite occurs as disseminations and bedded replacements with skarn and silicate minerals, and in conjunction with pyrite.
1.7    History and Exploration
Early-stage exploration included geological mapping, geochemical samples (stream sediment, soil, and rock chip samples), geophysical surveys (airborne and ground magnetics; radiometrics and electromagnetics; gravity, resistivity, and controlled-source audio-frequency telluromagnetics and magnetotellurics (MT); self-potential; induced-polarization (IP); time domain pole-dipole IP; time domain MT/IP using a distributed assay system; electrical logging of drill holes; and downhole IP. The majority of the surface-based grass roots exploration tools are superseded by mining and drill data.
Exploration potential exists adjacent to many of the deposits, along strike and at depth along favorable mineralized structures and within the favorable host lithologies.
1.8    Drilling and Sampling
Across the entire AOI, drilling totals over 203,000 drill holes for >82 Mft of drilling. Over the Project history, drilling included reverse circulation (RC), core, air rotary, mud rotary, and Cubex methods.
Logging conducted depended on the operator of the complex at the time the information was collected, and the drill type. Typically, logging collected information such as lithology, stratigraphy, basic structural data, recovery, alteration, and mineralization. For mining operations, logging could also record metallurgical type, intensity codes for metallurgy and alteration, and geotechnical parameters.
Collar surveys have used optical surveys, field estimates, Brunton compass and pacing, compass-and-string distance measurements, and for underground operations, measurements from surveyed control points, face, ribs and sill to triangulate each collar location. Down-hole surveys included downhole single-shot or multi-shot film camera (typical for most underground surveys), use of a downhole precession gyroscopic survey tool, a gyroscopic tool requiring initial orientation with a compass, and north-seeking or conventional gyroscopic tools.
Sampling is variable by mining complex and mineralization style. Air-rotary and mud-rotary drill holes were sampled on 5–100 ft intervals. Cubex drilling was sampled on 5–10 ft intervals. RC
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drill holes were typically sampled on 5 ft intervals. Core samples were nominally taken at 5 ft intervals, but could vary to a minimum of 1 ft to respect lithological contacts.
The majority of the density data were from measurements collected by exploration or mine site personnel using the water displacement method.
Given the long history of the Nevada Operations, there are numerous laboratories that were used over the Project history. Laboratories were both independent and non-independent. In the earlier stages of Project testwork, the idea of laboratory accreditation had not been developed. In later assay campaigns, accreditations were not typically recorded in the database. Currently, all independent laboratories used for chemical analysis are accredited for selected analytical techniques.
Sample preparation has varied over the 60 years of modern Project history, in line with advancing scientific knowledge, changes in equipment, and operational experience. Currently, sample preparation procedures include drying, crushing and pulverizing. As with sample preparation, analytical methods have changed over the Project history. Currently, sample analytical procedures include:
ALS Chemex: fire assays (FA) and atomic absorption (AA) finish for gold; samples reporting >0.1 oz/st Au on the initial assay re-assayed by FA with gravimetric finish; cyanide leach gold assays for initial FAs >0.008 oz/st Au; cyanide leach and preg rob capacity; LECO testing; multi-element analyses by aqua regia digestion/inductively coupled plasma-atomic emission spectroscopy (ICP-AES)/ICP-mass spectroscopy (ICP-MS), 51 elements or 48 element analyses by four acid and ICP-AES/ICP-MS; other analyses may be requested, and include arsenic, total carbon, total sulfur, sulfide sulfur, carbonate carbon, and organic carbon;
AAL: 1 assay ton fire assays with an AA finish for gold;
Mine laboratories: 1 assay ton fire assays with an AA finish for gold; samples with gold grade >0.438 oz/st are completed by a ½ assay ton fire assay with a gravimetric finish. If the sample gold grade is above the open pit cut-off grade, the samples are analyzed for cyanide leach, % preg rob, total carbon, total sulfur, sulfide sulfur, carbonate, and organic carbon for ore characterization purposes. On request, underground muck samples can be equal weight composited for further ore characterization analyses including total carbon, total sulfur, sulfide sulfur, carbonate carbon, organic carbon, and arsenic.
Prior to the mid-1990s, few companies had rigorous quality assurance and quality control (QA/QC) programs in place. QA/QC had typically consisted, where undertaken, of reanalysis of drill core or other samples when later sampling indicated a potential problem. In the case of the NGM Operations, QA/QC samples were submitted for RC and core samples from about 1990. Typical QA/QC measures include submission of blank materials, certified or standard reference materials (standards), and field duplicate samples. Check assays may not be routinely performed. Typical checks were undertaken on pulps and coarse reject samples to test the analytical processes and preparation procedure, respectively.
Project geologists review the assay results and periodically request a batch re-run and/or entire hole based on expected versus actual results. Analyses that appear to be outside best practice guidelines for exploration of two standard deviations will result in a request of the laboratory that completed the original analysis to undertake a re-run of the sample batch that the failed control was in. Check assay programs are the responsibility of the individual geologists.
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Several systems and programs are used to control and ensure assay data quality. These include standards for technician training, periodic process checks, equipment preventive maintenance, centralized reagent/standard preparation, control samples (reference materials) and blanks assayed with the samples, data verification, periodic check assays, and participation in industry round-robin programs.
1.9    Data Verification
Validation checks are performed by NGM operations personnel on data used to support estimation comprise checks on surveys, collar coordinates, lithology data (cross-checking from photographs), and assay data. Errors noted are rectified in the database prior to data being flagged as approved for use in resource estimation.
A number of third-party consultants have performed external data reviews. These external reviews were undertaken in support of acquisitions, support of feasibility-level studies, and in support of technical reports, producing independent assessments of the database quality. No significant problems with the database, sampling protocols, flowsheets, check analysis program, or data storage were noted.
The QP visited the Nevada Operations on many occasions, most recently to the Carlin Complex in 2019, and visited the Goldrush project during 2021. He inspected the underground workings at Leeville and Pete Bajo, viewed the open pit operations, and toured the Gold Quarry roaster. During the Goldrush visit he inspected the underground workings, reviewed core, and met with project representatives. The QP also toured the planned locations for some of the surface infrastructure. The QP’s personal inspection supports the use of the data in mineral resource and mineral reserve estimation, and in mine planning.
1.10    Metallurgical Testwork
During the 60+ year history of Nevada Operations mine development, a significant number of metallurgical studies and accompanying laboratory-scale and/or pilot plant tests have been completed. Either internal metallurgical research facilities or external consultants undertake the research. Recent external testwork was performed at McClelland Laboratories, Hazen Research, Macpherson Laboratories, McGill University, Svedala, and Outukumpu. Internal testwork facilities included the Goldstrike Metallurgical Laboratory, Gold Quarry Metallurgical Laboratory, Newmont Metallurgical Services in Englewood, Colorado and the AuTec Metallurgical Laboratory located in Vancouver, British Columbia, Canada.
Metallurgical testwork included: mineralogy; head grades and screen analyses; bottle roll, bench and column cyanide leaching; carbon adsorption/activation tests; direct cyanide leach testwork; carbon-in-leach tests; agglomeration tests; cyanide amenability tests; bench or circulating fluidized bed roasting tests; calcine tests; magnetic separation testwork; bench-top roaster followed by CIL testwork; bench-top alkaline pressure leach tests followed by CIL tests; calcium thiosulfate and resin leach tests; bench-top alkaline pressure leach tests followed by thiosulfate resin in leach testwork; sulfidization acidification re-neutralization and thickening or SART testwork; reagent consumption reviews; impurity reviews; standard autoclaving and leach tests; grindability (comminution) tests (SMC, breakage parameter, Bond work index, drop weight index, rod work index, unconfined compressive strength, semi-autogenous grind (SAG) power index); thickener testwork; batch and pilot plant tests
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These test programs were sufficient to establish the optimal processing routes for the non-refractory and refractory ores, and the weathering state of the ores (oxide, leached, enriched, transition, sulfide), and was performed on mineralization that was typical of the deposits. The results obtained supported estimation of recovery factors for the various ore types depending on the process method selected.
Numerous processing methods are used within the Nevada Operations, including CIL for higher-grade oxide ore, heap leaching for lower-grade oxide ore, roasting for carbonaceous refractory ore, and pressure oxidation (POX) for higher-grade sulfidic ore.
Future ore testing is completed according to the needs of the optimized blend planning for the combined NGM operations. Current ore testing is completed monthly by performing testwork on feed stockpile samples.
Gold recovery is a function of the processing method (e.g., heap leaching, CIL, roasting, and arsenic concentration for refractory ore) and the lithology of the mineralization being processed. As applicable, recovery estimates include consideration of the head grade, cyanide-soluble gold to fire assay gold ratio, sulfide sulfur concentration, total organic carbon concentration, and silica concentration.
Copper recovery models were derived from a statistical review of the metallurgical data and range in complexity from simple, fixed recoveries to complex, multi-variable equations. The following input variables were available as possible drivers of recovery: head grade, copper leach ore type, alteration type, formation, and various trace elements.
Recovery ranges projected for the LOM operations include:
Gold:
Oxide leach: 57–75%;
Oxide mill: 73–88%;
Goldstrike roaster: 84–92%;
Goldstrike autoclave: 50–96%;
Gold Quarry roaster: 84–92%;
Sage (Turquoise Ridge) autoclave: average 84%;
Phoenix mill: average 70%;
Copper:
Phoenix mill: average 71%;
Copper leach: average 49%;
Silver:
Phoenix mill: average 38%.
Samples selected for metallurgical testing during feasibility and development studies were representative of the various styles of mineralization within the different deposits. Samples were selected from a range of locations within the deposits. Sufficient samples were taken, and tests were performed using sufficient sample mass for the respective tests undertaken. Variability assessments are supported by production and extensive open pit and underground exposures.
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Depending upon the specific processing facility, several processing factors or deleterious elements could have an economic impact on extraction efficiency of a certain ore source, based either on the presence, absence, or concentration of the following constituents in the processing stream:
Organic carbon;
Sulfide sulfur;
Carbonate carbon;
Arsenic
Mercury;
Antimony;
Copper.
However, under normal ore routing and blending practices at NGM where material from several sites may be processed at one facility, the above list of constituents is typically not a concern.
1.11    Mineral Resource Estimation
1.11.1    Estimation Methodology
Estimation was typically performed by Nevada Operations personnel. All mineralogical, drilling, and background data and information were provided to the estimators by the geological staff at the operations or by exploration staff.
Exploratory data analysis was undertaken on sample and composite data, as required, to understand the statistical features within and between geologic and mineralization domains. High-grade anomalous values were controlled through the use of top-cutting and/or high-grade estimation restrictions, applied by deposit and domain. Composite lengths varied by complex and planned mining method, ranging from 2.5–20 ft. Variographic analyses were completed by domain.
Estimation and interpolation methods varied by deposit. The following methods were used: ordinary kriging, indicator kriging (IK), local indicator kriging (LIK), inverse distance weighting to the second power (ID2), inverse distance weighting to the third power (ID3), and inverse distance weighting to the fifth power (ID5). Typically, alternate grade interpolations (including nearest neighbor) were performed for use in model validation and sensitivity testing. Depending on the deposit, interpolation was performed in multiple (up to eight) passes. Search neighborhoods were based on variography, mineralization geometry, or on selected drill spacings. Minimum and maximum numbers of informing samples varied by deposit, as did the number of samples allowed to be used from a single drill hole. Dynamic anisotropy could be used to allow for a localized change in the strike, dip, and plunge orientation of the mineralization. Block models were flagged for mining depletion.
Mineralization solids were checked for conformity to drill hole data, continuity, similarity between sections, overlaps, appropriate terminations between holes and into undrilled areas. Validation procedures were undertaken on the estimations. These could include comparison of global mean grades, visual comparisons to composite grades, comparisons to reconciliation (when
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available), change of support corrections estimated using a discrete Gaussian model under a diffusion model assumption, grade-tonnage curves, slope of regression calculations, comparison to NN analysis and swath plots.
Blocks were classified in the model, based on relative confidence in the estimated grades, into measured, indicated, and inferred. Criteria for classification were defined within each deposit, and based on various combinations of: proximity to nearby drilling data (distances to nearest 1, 2, or 3 drill holes); geostatistical drill spacing studies; qualitative assessment of confidence in the underlying geologic interpretations; historical classification assignments; and classification smoothing algorithms.
Mineralization considered potentially amenable to open pit mining methods was constrained within a conceptual pit shell using the Lerchs–Grossmann (LG) algorithm within Vulcan software. Mineralization considered potentially amenable to underground methods was constrained within mineable shapes generated using Mineable Stope Optimizer (MSO) software.
Commodity prices used in resource estimation are based on long-term analyst and bank forecasts. An explanation of the derivation of the commodity prices is provided in Chapter 16.2. The estimated timeframe used for the price forecasts is the 24-year LOM that supports the mineral reserve estimates.
The resources are reported at varying cut-off values, which are based on the material type being mined, the mining method and the designated process facility. As a result, cut-off values can vary significantly by material type.
1.11.2    Mineral Resource Statement
Mineral resources are reported using the mineral resource definitions set out in SK1300. The reference point for the estimate is in situ. Mineral resources are reported exclusive of those mineral resources converted to mineral reserves.
Mineral resources are reported on a 100% basis. Barrick owns a 61.5% JV interest, with Newmont owning the remaining 38.5% JV interest.
The mineral resource estimates for the Nevada Operations are provided as follows:
Gold: Table 1-1 (measured and indicated) and Table 1-2 (inferred);
Silver: Table 1-3 (measured and indicated) and Table 1-4 (inferred);
Copper: Table 1-5 (measured and indicated) and Table 1-6 (inferred).
Tonnages in the tables are metric tonnes.
1.11.3    Factors That May Affect the Mineral Resource Estimate
Factors that may affect the mineral resource estimate include: changes to long-term metal price assumptions; changes in local interpretations of mineralization geometry and continuity of mineralized zones; changes to geological and grade shape and geological and grade continuity assumptions; changes to input parameters used in the pit shells and stope outlines constraining the mineral resources; changes to the cut-off grades used to constrain the estimates; variations
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in geotechnical, mining, and processing recovery assumptions; and changes to environmental, permitting and social license assumptions.
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Table 1-1:    Measured and Indicated Mineral Resource Statement (Gold)
ComplexMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Carlin45,4003.565,210140,1001.737,780185,5002.1812,980
Cortez7007.0217099,5001.203,850100,3001.254,010
Long Canyon5003.47609,8004.051,28010,4004.021,340
Turquoise Ridge15,3003.101,53033,7003.573,87049,1003.425,400
Phoenix7,6000.53130218,2000.453,140225,8000.453,270
Total69,6003.177,090501,3001.2419,910571,0001.4727,000
Table 1-2:    Inferred Mineral Resource Statement (Gold)
ComplexInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Carlin110,7002.17,510
Cortez124,4001.66,380
Long Canyon2,6003.6300
Turquoise Ridge18,2002.01,200
Phoenix49,2000.4580
Total305,0001.615,970
Table 1-3:    Measured and Indicated Mineral Resource Statement (Silver)
ComplexMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Phoenix7,6005.571,360218,2005.5438,860225,8005.5440,220
Total7,6005.571,360218,2005.5438,860225,8005.5440,220
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Table 1-4:    Inferred Mineral Resource Statement (Silver)
ComplexInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade (g/t Ag)Cont. Silver
(x 1,000 oz)
Phoenix49,2005.68,840
Total49,2005.68,840
Table 1-5:    Measured and Indicated Mineral Resource Statement (Copper)
AreaMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Phoenix8,0000.1420289,6000.14880297,6000.14910
Total8,0000.1420289,6000.14880297,6000.14910
Table 1-6:    Inferred Mineral Resource Statement (Copper)
AreaInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Phoenix51,6000.1150
Total51,6000.1150
Notes to Accompany Mineral Resource Tables:
1.Mineral resources are current as at December 31, 2021, using the definitions in SK1300. The Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.The reference point for the mineral resources is in situ.
3.Mineral resources are reported on a 100% basis. Barrick owns a 61.5% JV interest, with Newmont owning the remaining 38.5% JV interest.
4.Mineral resources are reported exclusive of mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
5.Mineral Resources that are potentially amenable to open pit mining methods are constrained within a designed pit shell. Mineral Resources that are potentially amenable to underground mining methods are constrained within conceptual stope designs. Parameters used are summarized in Table 11-1 and Table 11-2.
6.Tonnages are metric tonnes rounded to the nearest 100,000. Gold and silver grades are rounded to the nearest 0.01 gold grams per tonne. Copper grade is in %. Gold and silver ounces and copper pounds are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold and silver ounces are reported as troy ounces, rounded to the nearest 10,000. Copper is reported as pounds and rounded to the nearest 10 million pounds. Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”). Totals may not sum due to rounding.
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1.12    Mineral Reserve Estimation
1.12.1    Estimation Methodology
Measured and indicated mineral resources were converted to mineral reserves. Mineral reserves in the Nevada Operations area are estimated for the Carlin, Cortez, Long Canyon, Phoenix and Turquoise Ridge complexes using open pit mining, and the Carlin, Cortez, and Turquoise Ridge complexes using underground mining. Stockpiled material is also included in the mineral reserve estimates. All Inferred blocks are classified as waste in the cashflow analysis that supports mineral reserve estimation.
Mineral Reserves are supported by a mine plan, an engineering analysis, and the application of modifying factors.
For the open pits, optimization work involved floating cones at a series of gold prices. The generated nested pit shells were evaluated using the reserve gold price of US$1,200/oz (and $2.75/lb Cu and $16.50/oz Ag for Phoenix) and a 5% discount rate. The pit shells with the highest net present value (NPV) were selected for detailed engineering design work. A realistic schedule was developed in order to determine the optimal pit shell for each deposit; schedule inputs include the minimum mining width, and vertical rate of advance, mining rate and mining sequence. The block models were constructed to include the expected dilution based on mining methods, bench height and other factors. The current mine and process reconciliation data appear to support this assumption.
Underground mines are designed using zones that are amenable to different mining methods based on geotechnical and access considerations, the deposit shape, orientation and grade, and mining depths.
Cut-off grades were determined based on a combination of the selected metal price, applicable royalty payments, mining costs, process operating costs, and on-site (and off-site) metal recoveries by material type, and selected process method. Operational cut-off grades ranged from:
Carlin Complex: 0.20–7.06 g/t Au;
Cortez Complex: 0.17–3.41 g/t Au;
Long Canyon: 0.24 g/t Au;
Turquoise Ridge Complex: 0.17–7.99 g/t Au.
Revenue from the Phoenix Complex is generated from three products: gold, silver, and copper. A revenue cut-off, rather than a grade cut-off, is used that integrates the economics (recovery, metal prices, and costs) of all three metals. The revenue calculation only includes incremental mining costs beyond the pit rim. The mineral reserves for the Phoenix Complex are reported using a zero-dollar net revenue cut-off.
The mine plans assume use of a number of different mining methods and variants including: long-hole stoping; long-hole stope retreat; underhand drift-and-fill; and overhand drift-and-fill.
Stopes were created using Mineable Stope Optimizer (MSO) software at the required stope height, length and cut-off criteria based on the mine area. The stope widths depend on the
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stope cut-off and dilution (over-break) added to stope design, and the mining method used. A set of marginal stopes could also be considered in the reserve process.
Blocks that were modelled as waste or low-grade were included in a designed stope shape as internal dilution. Additional tonnage dilution percentages could be added by site personnel, where required, based on historical reconciliation data for a particular mining method. Cut-off grades are determined based on a combination of the selected metal price, applicable royalty payments, mining costs, process operating costs, and on-site (and off-site) metal recoveries by material type, selected process method, and mining method.
Stockpile estimates were based on mine dispatch data; the grade comes from closely-spaced blasthole sampling and tonnage sourced from truck factors. The stockpile volumes were typically updated based on monthly surveys. The average grade of the stockpiles was adjusted based on the material balance to and from the stockpile.
Commodity prices used in mineral reserve estimation are based on long-term analyst and bank forecasts. An explanation of the derivation of the commodity prices is provided in Chapter 16.2. The estimated timeframe used for the price forecasts is the 24-year LOM that supports the mineral reserve estimates.
1.12.2    Mineral Reserve Statement
Mineral reserves have been classified using the mineral reserve definitions set out in SK1300. The reference point for the mineral reserve estimate is the point of delivery to the process facilities. Mineral reserves are reported on a 100% basis. Barrick owns a 61.5% JV interest, with Newmont owning the remaining 38.5% JV interest.
The mineral resource estimates for the Nevada Operations are provided as follows:
Gold: Table 1-7;
Silver Table 1-8;
Copper: Table 1-9.
Tonnages in the table are metric tonnes.
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Table 1-7:    Proven and Probable Mineral Reserve Statement (Gold)
Area 
Proven Mineral ReservesProbable Mineral ReservesProven and Probable Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Carlin38,3006.017,400129,8002.7011,280168,0003.4618,670
Cortez3,5004.43500103,0004.1613,780106,5004.1714,290
Long Canyon3001.43206001.06201,0001.1840
Turquoise Ridge42,9005.097,03032,6006.596,92075,6005.7413,940
Phoenix13,5000.72310155,8000.592,960169,3000.603,270
Total98,5004.8215,260421,8002.5834,960520,3003.0050,220
Table 1-8:    Proven and Probable Mineral Reserve Statement (Silver)
AreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Phoenix13,5007.403,200155,8006.3531,810169,3006.4335,010
Total13,5007.403,200155,8006.3531,810169,3006.4335,010
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Table 1-9:    Proven and Probable Mineral Reserve Statement (Copper)
AreaProven Mineral ReservesProbable Mineral Reserves
Proven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Phoenix17,8000.1770208,3000.17770226,1000.17830
Total17,8000.1770208,3000.17770226,1000.17830
Notes to Accompany Mineral Reserve Tables:
1.Mineral reserves are current as at December 31, 2021. Mineral reserves are reported using the definitions in SK1300. The Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.The point of reference for the estimates is the point of delivery to the process facilities.
3.Mineral reserves are reported for Nevada Gold Mines on a 100% basis. Barrick owns a 61.5% joint venture interest, with Newmont owning the remaining 38.5% joint venture interest.
4.Mineral reserves that will be mined using open pit mining methods are constrained within a designed pit shell. Mineral reserves that will be mined by underground mining methods are constrained within conceptual stope designs. Parameters used are summarized in Table 12-1 and Table 12-2.
5.Tonnages are metric tonnes rounded to the nearest 100,000. Gold and silver grades are rounded to the nearest 0.01 gold grams per tonne. Copper grade is in %. Gold and silver ounces and copper pounds are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold and silver ounces are reported as troy ounces, rounded to the nearest 10,000. Copper is reported as pounds and rounded to the nearest 10 million pounds. Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”). Totals may not sum due to rounding.
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1.12.3    Factors That May Affect the Mineral Reserve Estimate
Factors that may affect the mineral reserve estimates include: changes to long-term metal price assumptions; changes in local interpretations of mineralization geometry and continuity of mineralized zones; changes to geological and grade shape and geological and grade continuity assumptions; changes to input parameters used in the pit shells and stope outlines constraining the mineral reserves; changes to the cut-off grades used to constrain the estimates; variations in geotechnical, mining, and processing recovery assumptions; and changes to environmental, permitting and social license assumptions.
1.13    Mining Methods
Open pit mining is conducted using conventional techniques and an Owner-operated conventional truck and shovel fleet. Underground mining is currently conducted using conventional stoping methods, and conventional mechanized equipment.
Nevada Operations personnel and external consultants completed geotechnical studies and provided geotechnical recommendations that form the basis for pit designs. Ground control management plans were developed, and are regularly updated.
The Nevada Operations have hydrological models constructed for key operational areas, used to predict the rate of dewatering and for well-location planning. The models are regularly updated.
Ultimate open pit designs were developed based on pit optimization analysis. The pit limits incorporate geotechnical and hydrological recommendations into final high walls and are designed to include ramps and access to haulage routes to waste rock storage facilities (WRSFs) and processing facilities. Some deposits include phased pit designs which are used to sequence the mining operation. Phases are designed to optimize the economics of the operation and/or provide access to selected ore for blending purposes. Haul road effective widths for two-way travel range from 98–141 ft with a maximum grade of 10%. For single-lane haul roads, a minimum road width of 80 ft could be used for the bottom benches of the pit. Bench heights vary from 20–40 ft, and can be 60 ft where triple-benching is employed. Blast patterns are laid out according to material type using rock type designations.
Underground mining is mechanized, using large-scale equipment. The most common mining methods are a combination of cut-and-fill mining variants with cemented rock (CRF) or paste backfill, and long-hole stoping with, depending on ground conditions, either cemented or uncemented backfill. Depending on the operation, material is loaded into haul trucks and hauled to surface using declines, or hoisted via shafts.
The currently active and proposed waste rock storage facilities (WRSFs) have adequate capacity for the LOM. The management of waste rock is based on categorizing by waste rock types based on analytical parameters, with additional refining of waste polygons based on geologic interpretation.
The open pit production schedules have significant variation in ore delivery over time and there is a high proportion of the ore that is stockpiled after mining and before processing. There are several stockpile options, all of which are based upon the grade of material and varying from leach ore to mill ore. Leach material is generally delivered directly to the leach pads.
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The number of loading and hauling units allocated to each deposit varies depending on the operational needs from the open pit mine plans. The equipment list also includes the auxiliary equipment needed to support mining and the re-handling of the ore from the stockpile pad into the mill feeders. Underground equipment requirements include large-scale load–haul–dump (LHD) vehicles and haulage trucks, jumbos, and auxiliary equipment.
The LOM plan assumes 577 Mt of ore and 1,202 Mt of waste will be mined.
1.14    Recovery Methods
The designs of the process facilities design were based on a combination of metallurgical testwork, previous study designs, and previous operating experience. The designs are generally conventional to the gold industry. The Goldstrike autoclave uses a thiosulfate–resin-in-leach process which is not conventional, but is successful in processing high alkaline, preg-robbing ore from the Carlin Complex. The Goldstrike autoclave is planned to be converted to CIL in 2022–2023 when the high alkaline, preg-robbing, low-grade, double refractory stockpiles are consumed.
The gold heap leach process consists of a conventional run-of-mine leach pad, followed by leaching, solution collection, and pumping. Solution is collected in the leach pad drain system and then pumped to activated carbon columns (CIC) where gold loads onto activated carbon. Gold-laden carbon is reclaimed from the CIC circuit and transported to a centralized carbon stripping system where the gold is stripped from the carbon and recovered by electro-winning. Stripped carbon is recycled and reused. The gold heap leach produces doré.
The Phoenix copper leach process consists of a conventional run-of-mine leach pad designed to facilitate the stacking of copper oxide and transition ores as well as the subsequent leaching, solution collection, and pumping. The copper heap leach produces copper cathode.
The Gold Quarry concentrator (formerly referred to as Mill 5) relies on oxide pit, oxide stockpile, low-carbonate sulfide material, and high-carbonate sulfide material. The Gold Quarry concentrator uses a combination of flotation and cyanide leaching to recover gold. Gold recovery from the flotation process is dependent upon the application of the appropriate amount of grinding to liberate the pyrite and enable the sulfide mineral(s) to be selectively floated away from the bulk of the ore. Gold recovery from the carbon-in-leach (CIL) process is typically a function of the ease of solution access to gold particles.
The Gold Quarry roaster (formerly referred to as Mill 6) is fed with refractory ores from open pit and underground ores from Cortez, Gold Quarry, Goldstar, stockpile material and flotation concentrates from the Gold Quarry concentrator. Because the final processing steps are the same as in the oxide mill, the performance of a roasting facility is similarly driven by the same parameters with the addition of sufficient retention time in the roaster in contact with sufficient oxygen to complete the oxidizing process.
The Pipeline mill treats material from the Crossroads/Pipeline open pit, Cortez Pits open pit, Cortez Hills underground, and historical stockpiles derived from mining of the Pipeline and Cortez Hills open pits. The process consists of crushing and grinding, a CIL circuit, carbon stripping and reactivation circuits, and doré refining. The final product is doré.
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Run-of-mine higher-grade oxide ore from the Turquoise Ridge Surface sources are blended for gold grade, hardness, and carbonate content and fed to the Juniper oxide mill. The process consists of grinding, a CIL circuit, elution and electrowinning. The final product is doré.
The Phoenix solvent extraction–electrowinning (SX/EW) plant is fed with material derived from the Fortitude and Bonanza open pits. The SX plant consists of leaching, solvent extraction, and copper electrolysis, to produce cathode copper.
The Phoenix mill treats material from open pit sources at the Phoenix Complex. The plant has a copper/gold specific flotation system designed to provide concentrate products for sale to an outside smelter. The process consists of crushing and grinding, flotation, conventional CIP processing, to produce copper concentrates. Gold is also recovered by gravity separation.
The Goldstrike autoclave treats material from Goldstrike Betze Open Pit. The process consists of crushing and grinding, pressure oxidation using autoclaves, thiosulfate–resin-in-leach circuits, elution and electrowinning. The autoclave is planned to be converted to CIL in 2022–2023 once all of the high alkaline, preg-robbing, low-grade, double refractory stockpiles are depleted. The final product is doré.
The Sage autoclave treats material from Turquoise Ridge Underground and open pit sources, plus historical stockpiles. The process consists of crushing and grinding, pressure oxidation using autoclaves, a CIL circuit, elution and electrowinning. The final product is doré.
The Goldstrike roaster treats open pit and underground material from numerous sources including the South Arturo open pits, El Niño underground, Goldstrike underground, Goldstrike open pit, historical stockpiles derived from mining of the Goldstrike open pit, Goldstar open pit, Leeville underground, Pete Bajo underground, Exodus underground, Cortez Crossroads/Pipeline open pit, Cortez Hills underground, historical stockpiles derived from mining of the Cortez Hills and Crossroads/Pipeline open pits, and Goldrush underground. The process includes crushing and grinding, roasting, and a roaster CIL circuit. The product is transferred to the Goldstrike autoclave circuit for elution and electrowinning to produce doré.
The major consumables in the gold heap leach facilities are antiscalant, cyanide and lime. The copper heap leach pads use sulfuric acid. The Phoenix SX/EW plant uses sulfuric acid (electrolyte), cobalt, diluent, extractant, diatomaceous earth, clay, and starch. Mill facilities use grinding media, balls for ball mills, lime, cyanide, collector, frother, and hydrogen peroxide. The Goldstrike autoclave requires calcium thiosulfate and resin. Both autoclaves use grinding media, balls for ball mills, lime, and cyanide. The roasters require oxygen, grinding steel, cyanide, lime and sulfur.
Metallurgical facilities comprise nine heap leach facilities, two oxide plants, two flotation plants, two autoclave facilities and two roaster facilities.
Gold recovery from heap leaching is a function of solution application and management, particle size distribution, time, and mineralogy. Cyanide leach kinetics in the heap leach pads is most strongly affected by ore characteristics.
1.15    Infrastructure
The majority of the key infrastructure to support the Nevada Operations mining activities envisaged in the LOM is in place. New infrastructure is required to support the proposed
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Goldrush operations in the Cortez Complex. A third shaft at the Turquoise Ridge Complex is under construction.
There are nine heap leach pads in the Project area, all of which are actively being leached. There is sufficient capacity in the heap leach pads and planned heap leach pad expansions for LOM planning purposes.
There are 67 WRSFs in the Project area, of which 36 are inactive and undergoing reclamation, and 31 are active. A total of 24 pits are permitted for partial or full waste backfill. There is sufficient capacity in the existing WRSFs and planned WRSF expansions for LOM planning purposes.
There are 19 TSFs in the Project area, of which 11 are inactive and undergoing reclamation, and eight are active. There is sufficient capacity in the active TSFs and planned TSF expansions for LOM planning purposes.
Water supply for processing operations is sourced, depending on the facility, from well fields, TSF reclaim, storm run-off water, and pit dewatering. Potable water is provided by permitted water wells and supporting treatment and infrastructure facilities. The current water sources, assuming similar climate conditions to those experienced by the operations in the past, will be sufficient for the LOM plan.
Water management operations include systems of dewatering wells, water gathering and conveyance facilities, water storage, water use, and various management options for discharge of excess water. Water not used for mining or milling can be pumped to storage reservoirs. Rapid infiltration basins are used to capture storm run-off water to avoid that water coming into contact with mining operations. The NDEP allows selected complexes within the Nevada Operations, through discharge permits, to discharge groundwater from pumping operations to groundwater vis percolation, infiltration, and irrigation. The current water management practices are expected to be applicable for the LOM plan.
There are no accommodation facilities at any of the complexes. Personnel reside in adjacent settlements including Battle Mountain, Carlin, Elko, Golconda, Wells, West Wendover and Winnemucca.
Electrical power for the Carlin, Cortez, Turquoise Ridge, and Phoenix Complexes is obtained via TS Power Plant and from the Western 102 power plant (both of which are owned and operated by NGM) with transmission by NV Energy. Power for Gold Quarry, Long Canyon, and Goldrush is supplied via the Wells Rural Electric Power Company.
1.16    Markets and Contracts
1.16.1    Market Studies
NGM has established contracts and buyers for the gold bullion and copper concentrate and cathode products from the Nevada Operations, and has an internal marketing group that monitors markets for its key products. Together with public documents and analyst forecasts, these data support that there is a reasonable basis to assume that for the LOM plan, that the key products will be saleable at the assumed commodity pricing.
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1.16.2    Commodity Pricing
Barrick, as operator of the NGM JV, provides the commodity price guidance. Barrick uses a combination of historical and current contract pricing, contract negotiations, knowledge of its key markets from a long operations production record, short-term versus long-term price forecasts prepared by the company’s internal marketing group, public documents, and analyst forecasts when considering long-term commodity price forecasts.
Higher metal prices are used for the mineral resource estimates to ensure the mineral reserves are a sub-set of, and not constrained by, the mineral resources, in accordance with industry-accepted practice.
The long-term commodity price and exchange rate forecasts are:
Mineral reserves:
Gold: US$1,200.00/oz;
Silver: US$16.50/oz;
Copper: US$2.75/lb;
Mineral resources:
Gold: US$1,500.00/oz;
Silver: US$20.50/oz
Copper: US$3.50/lb.
1.16.3    Contracts
NGM has contracts in place for the majority of the copper concentrate. The terms contained within the concentrate sales contracts are typical and consistent with standard industry practice for high-gold, low-copper concentrates. NGM’s bullion is sold on the spot market, by marketing experts retained in-house by NGM/Barrick. NGM provides Newmont with the date and number of ounces that will be credited to Newmont’s account, and invoices Newmont for how much NGM is owed, such that Newmont receives credits for the ounces (based on the JV interest) and Newmont pays NGM for the ounces. The terms contained within the sales contracts are typical and consistent with standard industry practice and are similar to contracts for the supply of bullion elsewhere in the world.
The largest in-place contracts other than for product sales cover items such as bulk commodities, operational and technical services, mining and process equipment, and administrative support services. Contracts are negotiated and renewed as needed.
1.17    Environmental, Permitting and Social Considerations
1.17.1    Environmental Studies and Monitoring
Baseline and supporting environmental studies were completed to assess both pre-existing and ongoing site environmental conditions, as well as to support decision-making processes during operations start-up. Characterization studies were completed for climate, air quality, hydrology
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and surface water quality, hydrogeology, flora, fauna, soils, agriculture and land use, and the socioeconomic environment.
The Goldrush project is situated in a culturally- and biologically sensitive area, with numerous cultural sites and within sage grouse habitat. Major study areas in support of the planned mining operation include air quality, hazardous material and solid waste, noise, waste rock characterization, soils, biological resources, wildlife, special status species, visual and cultural resources, Native American Traditional Values, social and economic values, and environmental justice.
Plans were developed and implemented to address aspects of operations such as waste and fugitive dust management, spill prevention and contingency planning, water management, and noise levels. These plans will be extended to Goldrush as they become operational.
As part of its permitting requirements, NGM has submitted and received approval on numerous PoOs and Reclamation Plans for each area. NGM has additionally submitted and/or provided information to support Environmental Assessments (EA) or Environmental Impact Statements (EIS) for each area containing public lands. The additionally submitted information includes various baseline and supporting studies on various natural resources. Existing operations were reviewed by the BLM and Nevada Division of Environmental Protection Bureau of Mining Regulation and Reclamation (NDEP–BMRR). BLM NEPA analysis under an EA or EIS can result in a Determination of NEPA Adequacy (DNA), Findings of No Significant Impacts (FONSI), or a Record of Decision (ROD). These determinations are issued by the BLM for those operations where PoOs contain public lands. The PoOs are updated and amended, as necessary, to allow for continuation of mining or additional mine development.
1.17.2    Closure and Reclamation Considerations
Initial closure planning is included within all proposals and reclamation plan documents during the permitting process. Closure planning is integrated with mine and reclamation planning to the extent practicable during active operations. Concurrent reclamation of lands as mining progresses is a primary consideration for NGM. Reclamation plans are regularly reviewed and revised at a minimum of every three years to ensure adequate financial assurances have been put in place for required reclamation activities. Approvals are required from both the BLM and NDEP for reclamation and closure plan amendments and bond adjustments.
Various mine facilities are located within the PoO boundaries on both private lands and the federal lands administered by the BLM. Only approved facility disturbance can be constructed within PoO boundaries. All PoO boundaries and private lands within the PoO are under the jurisdiction of the NDEP–BMRR. The reclamation boundaries define limits of approved disturbance for mining within each PoO boundary. A Nevada industry-standard method or Standard Reclamation Cost Estimator (SRCE) model is used by NGM to calculate the liabilities.
NGM currently has posted approximately US$2.14 B in financial assurances in the form of letters of credit and surety bonds to cover mine closure costs. Additionally, there are several trusts associated with closure cost planning.
Estimated closure costs used in the cashflow analysis total US$0.9 B. This cost estimate is based on the actual disturbance.
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The Goldrush project will require development of a temporary closure plan, a tentative plan for permanent closure/interim closure plan, a plan of operations that includes a reclamation plan and reclamation surety estimate, and a plan for monitoring the post-closure stability of the site.
1.17.3    Permitting
As part of its permitting requirements, NGM has submitted PoOs and Reclamation Plans for each operation. NGM has submitted and/or provided information to support NEPA evaluation for each area containing public lands. The PoOs are updated and amended as necessary to allow for continuation of mining or additional mine development. The Nevada Operations have the required permits to operate or will be applying for the permits as they are required for mine development.
Additional permits will be required to support planned operations at Goldrush, with about 20 key permits required. The permitting approach assumes off-site transport of ore for processing at Goldstrike and Gold Quarry. Goldrush is going through NEPA review. This will result in completion of an Environmental Impact Statement which will be followed by Record of Decision from the BLM. The start of the NEPA process is completion of baseline studies and submission of a PoO to the BLM.
1.17.4    Social Considerations, Plans, Negotiations and Agreements
Nevada Gold Mines is one of the largest direct employers in the area and also generates significant indirect employment.
Stakeholder engagement is a primary pillar of that strategy and includes participation in local civic activities; city/town council and county commission meetings; serving on boards and committees; town hall meetings; and one-to-one engagement. From this engagement, NGM listens to, and partners with, local organizations to identify a social investment strategy. Education, health, economic development and cultural heritage are key areas for community investments. NGM has also partnered with local law enforcement on public safety initiatives and conservation groups on environmental conservation programs.
Also as part of the community affairs program, NGM engages with 10 tribal communities. Engagement with partner tribes includes regularly-held meetings called “Dialogue Meetings”; tribal council meetings; community committees; one-to-one engagements and sponsorship of several community-driven initiatives. Through this engagement, NGM works with tribal councils to identify and support community priorities in programs aimed at improving community health and well-being, education attainment, cultural heritage preservation, and economic development.
The Cortez Complex, including the Goldrush project, operates on lands traditionally used by the Western Shoshone tribes and bands. As the Goldrush project develops, NGM will hold public meetings (and advertise a local grievance mechanism according to the Grievance Management Procedure) if internal strategy deems appropriate so that citizens in the surrounding areas may come to learn more about the project and express their support or concerns.
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1.18    Capital Cost Estimates
Capital costs were based on recent prices or operating data and are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Capital costs included funding for infrastructure, pit dewatering, development drilling, and permitting as well as miscellaneous expenditures required to maintain production. Mobile equipment re-build/replacement schedules and fixed asset replacement and refurbishment schedules were included. Sustaining capital costs reflected current price trends.
The LOM capital cost estimate is US$2.6 B (Table 1-10).
Table 1-10:    Capital Cost Estimate
AreaUnitValue
MineUS$ B1.3
ProcessUS$ B0.8
General and administrativeUS$ B0.2
Goldrush pre-productionUS$ B0.4
TotalUS$ B2.6
Note: Numbers have been rounded; totals may not sum due to rounding.
1.19    Operating Cost Estimates
Operating costs were based on actual costs seen during operations and are projected through the LOM plan, and are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Historical costs were used as the basis for operating cost forecasts for supplies and services unless there are new contract terms for these items. Labor and energy costs were based on budgeted rates applied to headcounts and energy consumption estimates.
The LOM operating costs are estimated at US$34.9 B (Table 1-11). The average mining costs (open pit and underground) over the LOM are US$10.47/t mined, autoclave costs are US$34.01/t processed, roaster costs are US$24.12/t processed, oxide mill costs are US$10.46/t processed, heap leach costs are US$3.53/t processed, and general and administrative costs (inclusive of transport costs) are US$5.78/t processed.
1.20    Economic Analysis
1.20.1    Economic Analysis
The financial model that supports the mineral reserve declaration is a standalone model that calculates annual cashflows based on scheduled ore production, assumed processing recoveries, metal sale prices, projected operating and capital costs and estimated taxes.
The financial analysis is based on an after-tax discount rate of 5%. All costs and prices are in unescalated “real” dollars. The currency used to document the cashflow is US$.
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All costs are based on the 2022 budget. Revenue is calculated from the recoverable metals and long-term metal price and exchange rate forecasts.
Taxes assume a rate of 21% plus the Nevada Net Proceeds Tax of 5% and the Nevada Mining Education Tax.
The economic analysis is based on 100% equity financing and is reported on a 100% project ownership basis. The economic analysis assumes constant prices with no inflationary adjustments. Barrick owns a 61.5% JV interest, with Newmont owning the remaining 38.5% JV interest.
Table 1-11:    Operating Cost Estimate
ItemUnitsValue
MiningUS$B18.6
RehandleUS$B0.8
AutoclavesUS$B4.8
RoastersUS$B5.2
Oxide MillUS$B0.4
LeachUS$B0.6
G&AUS$B3.3
TransportUS$B1.1
TotalUS$B34.9
Note: Numbers have been rounded; totals may not sum due to rounding.
Within the NGM JV, copper sales are generally in the form of concentrate, which is sold to smelters for further treatment and refining, and cathode. Copper is sold in either concentrate or cathode form. These sales are to third party customers. Generally, if a secondary metal expected to be mined is significant to the NGM JV, co-product accounting is applied. When the NGM JV applies co-product accounting at an operation, revenue is recognized for each co-product metal sold, and shared costs applicable to sales are allocated based on the relative sales values of the co-product metals produced. Generally, if a secondary metal expected to be mined is not significant to the Joint Venture, by-product accounting is applied. As copper and silver production at each of the NGM operations is not significant to the NGM JV, production from copper and silver are accounted for as by-product sales. Revenues from by-product sales are credited by NGM and Barrick as a by-product credit.
For the purposes of showing a complete cashflow analysis for the Nevada Operations as a whole, silver was treated as a by-product credit.
The economic analysis is based on 100% equity financing and is reported on a 100% project ownership basis. The economic analysis assumes constant prices with no inflationary adjustments.
The NPV5% is $4.2 B. Due to the profile of the cashflow, considerations of payback and internal rate of return are not relevant.
A summary of the financial results is provided in Table 1-12.
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1.20.2    Sensitivity Analysis
The sensitivity of the Project to changes in metal prices, grade, sustaining capital costs and operating cost assumptions was tested using a range of 20% above and below the base case values (Figure 1-1).
The Project is most sensitive to changes in the metal price, followed by operating cost changes and the least sensitive to capital cost changes. Grade is not shown, as the grade sensitivity mirrors the metal price sensitivity.
Table 1-12:    Cashflow Summary Table (100% basis)
ItemUnitValue
Metal prices
GoldUS$/oz1,200
CopperUS$/lb2.75
SilverUS$/oz16.5
Total ore
Gold tonnageMt520
Gold gradeg/t3.00
Copper tonnageMt226
Copper grade%0.17
Silver tonnageMt169
Silver gradeg/t6.43
Gold ouncesMoz50
Copper poundsBlb0.8
Silver ouncesMoz35
Capital costsUS$B2.6
Operating cashflowUS$B34.2
Discount rate%5
Free cashflowUS$B5.9
Net present valueUS$B4.2
Note: Numbers have been rounded; totals may not sum due to rounding. Tonnes are metric tonnes. Barrick owns a 61.5% JV interest, with Newmont owning the remaining 38.5% JV interest. Table 1-12 contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbor created by such sections and other applicable laws. Please refer to the note regarding forward-looking information at the front of the Report. The cashflow is only intended to demonstrate the financial viability of the Project. Investors are cautioned that the above is based on a high-level mine plan and certain assumptions which may differ from Newmont’s long-term outlook or actual financial results, including, but not limited to commodity prices, escalation assumptions and other technical inputs. For example, Table 1-12 uses the price assumptions stated in the table, including a gold commodity price assumption of US$1,200/oz, which varies significantly from current gold prices and the assumptions that Newmont uses for its long-term guidance. Please be reminded that significant variation of metal prices, costs and other key assumptions may require modifications to mine plans, models, and prospects.
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Figure 1-1:    NPV Sensitivity
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Note: Figure prepared by Newmont, 2021. NPV = net present value.
1.21    Risks
The risks associated with the Nevada Operations are generally those expected with open pit and underground mining operations and include the accuracy of the resource models, unexpected geological features that cause geotechnical issues, and/or operational impacts.
Other risks noted include:
Commodity price increases for key consumables such diesel, electricity, tires and chemicals would negatively impact the stated mineral reserves and mineral resources;
Labor cost increases or productivity decreases could also impact the stated mineral reserves and mineral resources, or impact the economic analysis that supports the mineral reserves;
Geotechnical and hydrological assumptions used in mine planning are based on historical performance, and to date historical performance has been a reasonable predictor of current conditions. Any changes to the geotechnical (seismicity) and hydrological assumptions could affect mine planning, affect capital cost estimates if any major rehabilitation is required due to a geotechnical or hydrological event, affect operating costs due to mitigation
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measures that may need to be imposed, and impact the economic analysis that supports the mineral reserve estimates;
The mineral resource estimates are sensitive to metal prices. Lower metal prices require revisions to the mineral resource estimates;
The LOM plan assumes that new TSFs can be permitted based on envisaged timelines. If the permitting schedule is delayed, this could impact costs and proposed production;
Updated industry standards for TSFs may have an impact on the envisaged TSF costs;
The LOM plan assumes that ore is sent to the process facility that will provide optimal results (costs, metallurgical recoveries). Should, for operational reasons, a different process facility be selected, then higher operating costs and/or lower recoveries may result;
The LOM plan envisages blending of numerous ore sources at the various process facilities. Non-optimal blends could impact operating costs, plant throughputs, and metallurgical recoveries. There may be potential for exceedances on environmental monitoring limits if such blends are not well controlled;
Stockpiled materials can undergo degradation over time, and the metallurgical recoveries assumed for stockpiled materials may be lower than that assumed in the LOM plan;
Management of threatened and endangered species may delay permits and increase capital and/or operating costs. Although there are site-specific management plans, either planned or in place, if there is a major impact seen on the populations from mining activities, the environmental permits for the operations could be revised or even revoked. The social license to operate could also be impacted;
Regulatory approval of the Goldrush project is still pending, and the project is in the EIA process. If conditions are imposed by the regulators as a result of the process, this could impact the project schedule and cost estimates;
On-highway transport of ore or concentrate could be impacted by changes to regulations on the number of trucks that can be used;
Exceedances of permit conditions have historically occurred at certain of the process facilities. Should such exceedances recur, there could be social and regulatory impacts to operations, mine plans, and the forecast economic analyses;
Climate changes could impact operating costs and ability to operate;
The long-term reclamation and mitigation of the Nevada Operations are subject to assumptions as to closure timeframes and closure cost estimates. If these cannot be met, there is a risk to the costs and timing;
Newmont is the minority partner in the NGM JV and does not exercise day-to-day control over NGM’s operations;
Political risk from challenges to the current state or federal mining laws.
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1.22    Opportunities
Opportunities include:
Conversion of some or all of the measured and indicated mineral resources currently reported exclusive of mineral reserves to mineral reserves, with appropriate supporting studies;
Upgrade of some or all of the inferred mineral resources to higher-confidence categories, such that this higher-confidence material could potentially be converted to mineral reserve estimates;
Higher metal prices than forecast could present upside sales opportunities and potentially an increase in predicted Project economics;
NGM holds a significant ground package within the AOI that retains significant exploration potential:
Exploration potential around current and historical open pits;
Potential for new underground operations proximal to the current mineral resource and mineral reserve estimates, with the support of additional studies.
1.23    Conclusions
Under the assumptions presented in this Report, the Nevada Operations have a positive cashflow, and mineral reserve estimates can be supported.
1.24    Recommendations
As the Nevada Operations are a complex of operating mines, the QP has no material recommendations to make.
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2.0    INTRODUCTION
2.1    Registrant
This technical report summary (the Report) was prepared for Newmont Corporation (Newmont) on the Nevada Operations (Nevada Operations or the Project) that are located in Nevada (Figure 2-1).
The Project is operated as a joint venture (JV) through Nevada Gold Mines, LLC (NGM). Barrick Gold Corporation (Barrick) is the JV operator and owns 61.5%, with Newmont owning the remaining 38.5% JV interest.
2.2    Terms of Reference
2.2.1    Report Purpose
The Report was prepared to be attached as an exhibit to support mineral property disclosure, including mineral resource and mineral reserve estimates, for the Nevada Operations in Newmont’s Form 10-K for the year ending December 31, 2021.
Deposits and zones for which mineral resources and mineral reserves are reported are summarized in Table 2-1.
2.2.2    Terms of Reference
The Nevada Operations consist of 10 underground and 12 open pit active mining operations, two autoclave facilities, two roasting facilities, two oxide mills, two flotation plant and five heap leach facilities, forming five major mining/processing complexes centered at Carlin, Cortez, Long Canyon, Phoenix and Turquoise Ridge.
Active open pit mining operations include Crossroads, Gold Quarry, Goldstrike, Goldstar, Long Canyon, Phoenix, Pipeline, and Vista. Two deposits, the Mega Pit at Turquoise Ridge and the South Arturo deposit at Carlin that are planned to be mined using open pit methods, are not currently active, but are planned to be mined in 2022–2023. Active underground mining operations include Cortez Hills underground, Exodus, Goldstrike, El Niño, Leeville, Pete Bajo, Turquoise Ridge Underground, and Vista. Underground exploration development is underway at the Goldrush deposit.
Figure 2-1 shows the locations of the major mining complexes in relation to the JV area of interest (AOI) covers a significant portion of northern Nevada. Note that the AOI area includes ground that is held by third parties and is not part of the NGM mineral title holdings.
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Table 2-1:    Deposits/Zones Hosting Mineral Resources and Mineral Reserves
ComplexDeposit/ZoneMining Method
CarlinEmigrantOpen pit
ExodusUnderground
Gold QuarryOpen pit
GoldstarOpen pit
GoldstrikeOpen pit
GoldstrikeUnderground
Green LanternOpen pit
LeevilleUnderground
North LeevilleUnderground
PerryOpen pit
Pete BajoUnderground
RenUnderground
Rita KUnderground
South ArturoOpen pit
El Niño (South Arturo)Underground
CortezCortez Hills Underground (CHUG)Underground
Cortez PitsOpen pit
CrossroadsOpen pit
Gold AcresOpen pit
GoldrushUnderground
PipelineOpen pit
RobertsonOpen pit
Long CanyonPhase 1Open pit
Phase 2Open pit
Phase 3Underground
PhoenixBonanzaOpen pit
FortitudeOpen pit
Turquoise RidgeMega Cut 25Open pit
Mega Cut 40Open pit
Mega Cut 55Open pit
Turquoise Ridge UndergroundUnderground
Vista 8Open pit
Vista 9Open pit
Vista UndergroundUnderground
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Figure 2-1:    Mining Complex and Plan of Operations Location Plan
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Unless otherwise indicated, all financial values are reported in United States (US) currency (US$).
Units may be in either metric or US customary units as identified in the text.
Mineral resources and mineral reserves are reported using the definitions in Subpart 229.1300 – Disclosure by Registrants Engaged in Mining Operations in Regulation S–K 1300 (SK1300).
The Report uses US English.
The Report contains forward-looking information; refer to the note regarding forward-looking information at the front of the Report.
2.3    Qualified Persons
The following Newmont employee serves as the Qualified Person (QP) for the Report:
Mr. Donald Doe, RM SME., Group Executive, Reserves, Newmont.
Mr. Doe is responsible for all Report Chapters.
2.4    Site Visits and Scope of Personal Inspection
Mr. Doe visited the Nevada Operations on many occasions, most recently on February 5, 2019, to the Carlin Complex. He inspected the underground workings at Leeville and Pete Bajo, viewed the open pit operations, and toured the Gold Quarry roaster.
Mr. Doe performed a site visit in May 5–6, 2021 to the Goldrush project. During that visit he inspected the underground workings, reviewed core, and met with project representatives. Mr. Doe also toured the planned locations for some of the surface infrastructure.
2.5    Report Date
Information in the Report is current as at December 31, 2021.
2.6    Information Sources and References
The reports and documents listed in Chapter 24 and Chapter 25 of this Report were used to support Report preparation.
2.7    Previous Technical Report Summaries
Newmont has not previously filed a technical report summary on the Project.
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3.0    PROPERTY DESCRIPTION
3.1    Introduction
The Nevada Operations are centered on the Carlin South Plan of Operations, which is the approximate center of the Area of Interest (AOI), see Figure 2-1 and discussion in Chapter 3.3. The centroid locations of the current Plans of Operations (PoOs) are summarized in Table 3-1.
3.2    Property and Title in Nevada
3.2.1    Mineral Title
Federal (30 USC and 43 CFR) and Nevada (NRS 517) laws concerning mining claims on Federal land are based on an 1872 Federal law titled “An Act to Promote the Development of Mineral Resources of the United States.” Mining claim procedures still are based on this law, but the original scope of the law has been reduced by several legislative changes.
The Mineral Leasing Act of 1920 (30 USC Chapter 3A) provided for leasing of some non-metallic materials; and the Multiple Mineral Development Act of 1954 (30 USC Chapter 12) allowed simultaneous use of public land for mining under the mining laws and for lease operation under the mineral leasing laws. Additionally, the Multiple Surface Use Act of 1955 (30 USC 611-615) made “common variety” materials non- locatable; the Geothermal Steam Act of 1970 (30 USC Chapter 23) provided for leasing of geothermal resources; and the Federal Land Policy and Management Act of 1976 (the “BLM Organic Act,” 43 USC Chapter 35) granted the Secretary of the Interior broad authority to manage public lands. Most details regarding procedures for locating claims on Federal lands have been left to individual states, providing that state laws do not conflict with Federal laws (30 USC 28; 43 CFR 3831.1).
Mineral deposits are located either by lode or placer claims (43 CFR 3840). The locator must decide whether a lode or placer claim should be used for a given material; the decision is not always easy but is critical. A lode claim is void if used to acquire a placer deposit, and a placer claim is void if used for a lode deposit. The 1872 Federal law requires a lode claim for “veins or lodes of quartz or other rock in place” (30 USC 26; 43 CFR 3841.1), and a placer claim for all “forms of deposit, excepting veins of quartz or other rock in place” (30 USC 35). The maximum size of a lode claim is 1,500 ft (457 m) in length and 600 ft (183 m) in width, whereas an individual or company can locate a placer claim as much as 20 acres (8 ha) in area.
Claims may be patented or unpatented. A patented claim is a lode or placer claim or mill site for which a patent has been issued by the Federal Government, whereas an unpatented claim means a lode or placer claim, tunnel right or mill site located under the Federal (30 USC) act, for which a patent has not been issued.
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Table 3-1:    Operations Plan of Operations Centroid Location Summary Table
Plan Of Operations NameEastingNorthingProjection Datum
Arturo547693.67 4542375.40 UTM NAD83 Zone 11N
Bootstrap549530.93 4540070.80 UTM NAD83 Zone 11N
Carlin558233.17 4528248.53 UTM NAD83 Zone 11N
Cortez527007.17 4451450.13 UTM NAD83 Zone 11N
Dee546666.01 4542000.35 UTM NAD83 Zone 11N
Emigrant587023.17 4495607.30 UTM NAD83 Zone 11N
Genesis-Bluestar553286.53 4531560.79 UTM NAD83 Zone 11N
Gold Quarry567325.95 4514448.36 UTM NAD83 Zone 11N
Goldstrike551906.11 4537120.53 UTM NAD83 Zone 11N
Phoenix489152.32 4483634.77 UTM NAD83 Zone 11N
Leeville556455.63 4531494.14 UTM NAD83 Zone 11N
Long Canyon710085.96 4537424.11 UTM NAD83 Zone 11N
Rain583602.96 4495804.12 UTM NAD83 Zone 11N
Turquoise Ridge482164.33 4560820.78 UTM NAD83 Zone 11N
Twin Creeks487331.39 4566477.34 UTM NAD83 Zone 11N
3.2.2    Surface Rights
About 85% of the land in Nevada is controlled by the Federal Government; most of this land is administered by the US Bureau of Land Management (BLM), the US Forest Service (USFS), the US Department of Energy, or the US Department of Defense. Much of the land controlled by the BLM and the USFS is open to prospecting and claim location. The distribution of public lands in Nevada is shown on the BLM “Land Status Map of Nevada” (1990) at scales of 1:500,000 and 1:1,000,000.
Bureau of Land Management regulations regarding surface disturbance and reclamation require that a notice be submitted to the appropriate BLM Field Office for exploration activities in which five acres or fewer are proposed for disturbance (43 CFR 3809.1-1 through 3809.1-4). A Plan of Operations (PoO) is needed for all mining and processing activities, plus all activities exceeding five acres of proposed disturbance. A PoO is also needed for any bulk sampling in which 1,000 or more tons of presumed mineralized material are proposed for removal (43 CFR 3802.1 through 3802.6, 3809.1-4, 3809.1-5). The BLM also requires the posting of bonds for reclamation for any surface disturbance caused by more than casual use (43 CFR 3809.500 through 3809.560). The USFS has regulations regarding land disturbance in forest lands (36 CFR Subpart A). Both agencies also have regulations pertaining to land disturbance in proposed wilderness areas.
3.2.3    Water Rights
In the State of Nevada, “the water of all sources of water supply within the boundaries of the State whether above or beneath the surface of the ground, belongs to the public” (NRS 533.025). Furthermore, “except as otherwise provided in NRS 533.027 and 534.065, any person who wishes to appropriate any of the public waters, or to change the place of diversion, manner of use or place of use of water already appropriated, shall, before performing any work in
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connection with such appropriation, change in place of diversion or change in manner or place of use, apply to the State Engineer for a permit to do so” (NRS 533.325).
3.2.4    Government Mining Taxes, Levies or Royalties
The state of Nevada imposes a 5% net proceeds tax on the value of all minerals severed in the State. This tax is calculated and paid based on a prescribed net income formula.
A Nevada Education funding tax, AB 495, was passed in July 2021, and is based on gold and silver gross revenue and is calculated as follows:
First $20 M of gross revenue: exempt;
>$20 M to $150 M of gross revenue: taxed at a flat rate of 0.75%;
>$150 M of gross revenue: taxes at a flat rate of 1.1%.
3.3    Ownership
NGM is a JV between Barrick and Newmont. Barrick is the JV operator and has a 61.5% interest, with Newmont owning the remaining 38.5% interest. The JV area of interest (AOI) covers a significant portion of northern Nevada (Figure 3-1). Barrick operates the JV.
3.4    Joint Ventures
On 11 March, 2019, Barrick and Newmont announced the formation of the NGM JV. Newmont, Barrick, and their respective affiliates that held properties in the AOI contributed to NGM the respective rights, titles and interests in, to, or under, all properties located in the AOI and any other assets, properties or rights located in Nevada.
Barrick has the right to appoint three NGM Board members; Newmont can appoint two.
Newmont and Barrick each have a right of first refusal over any proposed transfer by the other JV participant of its membership interest in NGM, other than transfers to a wholly-owned subsidiary of the transferring JV participant.
The JV agreement requires that Newmont and Barrick purchase 100% of the refined doré that NGM produces on a pro rata basis, according to the individual company’s JV interest.
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Figure 3-1:    NGM Area of Interest
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Newmont and Barrick excluded certain development and exploration properties that the companies held within the AOI from the JV; these included Newmont’s Fiberline and Mike projects, and Barrick’s Fourmile project. The JV has a mechanism for the potential contribution of the excluded properties to NGM in the future.
3.5    Agreements
A number of agreements exist with federal, state, and third-party entities and these are monitored using a land management database. The data managed includes contractual obligations, leases, associated payments, parties to agreements, and locations and details of the properties that the agreements cover. All mining leases and subleases are managed and reviewed on a monthly basis and all payments and commitments are paid as required by the specific agreements.
The database covers both monetary obligations such as lease payments and non-monetary obligations such as third-party required reporting, work commitments, taxes, and contract expiry dates. The agreements that NGM has with third parties within the PoOs are monitored using this database.
Across the AOI, there are currently 294 agreements that have been concluded, and 168 easements that are in place.
3.6    Mineral Title
The Nevada Operations currently includes 15 operations PoOs and eight exploration PoOs. The area includes private land (surface and minerals) owned or controlled by NGM, and land owned by the federal government that is administered by the BLM.
NGM provided a claims list, fee property list, and location plans for the PoOs. The areas in the claims tables that follow reflect the staked claim area; the areas have not been modified for claim overlaps. In some instances, where the same claims are reported within two or more PoOs; the claims are included in the claims list for the individual PoO for completeness, but have been removed for area and claim number totaling purposes.
Within the operations PoO areas are the claims summarized in Table 3-2, which collectively total 9,205 lode, millsite, placer and patented claims covering an area of 163,214.40 acres. Within the exploration PoO areas are the claims summarized in Table 3-3, which collectively total 2,180 lode, millsite, placer and patented claims covering an area of 43,363.94 acres. Between the operations and the exploration PoOs, NGM holds a total of 11,385 claims covering an area of 206,578.34 acres (Table 3-4). Figure 3-2 to Figure 3-6 show the locations of the major PoOs that host the mineral reserves.
In addition, NGM holds a number of fee properties, within the operations and exploration PoOs (Table 3-5 and Table 3-6). Collectively, these cover an area of 78,620.56 acres.
Patented ground or claims are surveyed by a certified mineral surveyor, and appropriate monuments are placed in the ground. Each unpatented claim is marked on the ground and does not require a mineral survey.
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Unpatented mining and mill site claims that are located on public lands are held subject to the paramount title of the federal government. The claims are maintained on an annual basis, and do not expire as long as the maintenance fee payments are timely filed with the BLM.
Patented and fee lands require annual payment of tax assessments to the relevant Nevada county.
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Table 3-2:    Claims Summary Table, Operations PoOs
PoO NameLodeMillsite Placer Patented Total 
ClaimsAcresClaimsAcresClaimsAcresClaimsAcresClaimsAcres
Arturo2364,539.0498453.32  3344,992.36
Bootstrap1232,399.72  13253.421362,653.14
Carlin1021,959.89   1021,959.89
Cortez2,91755,998.375552,563.302320.001451,020.983,61959,902.65
Dee3436,552.88102473.28  4457,026.16
Genesis–Bluestar2033,856.97312.92 2063,869.89
Gold Quarry3096,346.752251,125.00 5347,471.75
Goldrush (proposed PoO)1,04720,847.6517337.85 1,06421,185.50
Goldstrike2454,555.8852249.71 601,016.873575,822.46
Leeville45912.71  45912.71
Long Canyon73414,478.43  73414,478.43
Phoenix53310,940.8560300.00212,680.662282,441.2084216,362.71
Rain–Emigrant1392,809.45  1392,809.45
Ren911,596.73  911,596.73
Rossi3887,585.4022103.32 11221.254217,909.97
Turquoise Ridge80316,254.7640194.94 84316,449.70
Sub-total Operations8,258161,635.481,1745,813.64233,000.664574,953.729,912175,403.50
Claims reported in two PoOs; second claim listing area excluded58311,348.61101466.24  68411,814.85
Claims reported in three PoOs; second and third claim listing areas excluded23374.25   23374.25
Total Operations7,652149,912.621,0735,347.40233,000.664574,953.729,205163,214.40
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Table 3-3:    Claims Summary Table, Exploration PoOs
PoO NameLodeMillsite Placer Patented Total 
ClaimsAcresClaimsAcresClaimsAcresClaimsAcresClaimsAcres
Antler Peak5103.305103.30
Chevas1082,231.281082,231.28
Chimney North1,19624,659.141,19624,659.14
Emigrant47970.7547970.75
High Desert1182,362.31462.461222,424.77
Hilltop1893,637.3625510.9618315.022324,463.34
Robertson4457,938.589168.864548,107.44
Woodruff Creek2034,135.562034,135.56
Sub-total Exploration2,31146,038.2800.0025510.96315462,36747,096
Claims reported in two PoOs; second claim listing area excluded1743,483.721743,483.72
Claims reported in three PoOs; second and third claim listing areas excluded13247.9213247.92
Exploration Total2,12442,363.9400.0025510.9631546.342,18043,363.94
Note: Within the Robertson PoO, there were five claims in the claims table that had separate entries for each different owner, where the claims were entered into the NGM database as having four registered owners. The claims table was adjusted to reflect a single claim rather than multiple claims.
Table 3-4:    Claims Totals
PoO NameLodeMillsite Placer Patented Total 
ClaimsAcresClaimsAcresClaimsAcresClaimsAcresClaimsAcres
Total Operations7,652149,912.621,0735,347.40233,000.664574,953.729,205163,214.40
Total Exploration2,12438,669.2800.0000.0031546.342,18043,363.94
Grand Total9,776188,581.901,0735,347.40233,000.664885,500.0611,385206,578.34
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Table 3-5:    Operations Fee Property Totals
Plan of OperationAcres
Arturo37.38
Bootstrap887.64
Carlin3,347.22
Cortez2,782.84
Dee0.00
Genesis–Bluestar3,980.60
Gold Quarry8,187.98
Goldrush518.48
Goldstrike8,089.36
Leeville137.60
Long Canyon14,774.62
North Area Leach1,705.38
Phoenix6,828.60
Rain–Emigrant3,455.88
Ren0.00
Rossi0.00
Robertson0.00
Turquoise Ridge5,585.51
Total60,319.10
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Table 3-6:    Exploration Fee Property Totals
Plan of OperationsAcres
Antler Peak3,382.38
Chevas1,020.40
Chimney North0.00
Emigrant1,075.24
Four Corners1,301.04
High Desert54.98
Hilltop3,956.94
Mike242.99
Pearl1,992.87
Richmond1,989.43
Robertson0.0
Tara355.68
Woodruff Creek2,929.51
Total18,301.46
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Figure 3-2:    Carlin Complex Plans of Operation
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Figure 3-3:    Cortez Complex Plans of Operation
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Figure 3-4:    Long Canyon Complex Plan of Operations
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Figure 3-5:    Phoenix Complex Plan of Operation
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Figure 3-6:    Turquoise Ridge Complex Plans of Operation
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3.7    Surface Rights
NGM holds all necessary surface rights for the current mining operations. Additional surface rights will be required, for future mining projects.
The Goldrush PoO is currently moving through the National Environmental Policy Act (NEPA) process (see discussion in Chapter 17.4.2).
3.8    Water Rights
NGM currently maintains a combination of approximately 1,250 active surface and groundwater rights within 38 hydrographic basins. Permitted manners of use include stockwater, mining and milling, storage, irrigation, environmental, quasi-municipal, commercial, industrial, wildlife, domestic, construction, and dewatering. These water rights are required by NRS 533 for all water management activities at NGM’s various mining and ranching operations.
NGM holds all necessary water rights for the LOM plan envisaged in this Report.
3.9    Royalties
3.9.1    Claims Royalties
There are numerous royalties that pertain to the active mines within the Nevada Operations. Royalty payments vary, as the payments depend upon actual tonnages mined, the amount of gold recovered from that mined material, the deposit being mined, the receiving entity, and the type of royalty. A number of the claims have inactive royalties attached, which are not currently triggered as the claims are not being mined.
The major royalties for each deposit are summarized in Table 3-7. Royalties listed can pertain to single claim, or to a group of claims, and therefore can apply to only a portion of a deposit, or to the overall deposit area.
3.9.2    NGM Royalty
In connection with the formation of Nevada Gold Mines, each of Barrick and Newmont was granted a 1.5% net smelter returns royalty over the respective properties they contributed to the NGM JV.
For the properties contributed by Barrick, the 1.5% net smelter returns royalty is payable on all gold produced from these properties after 47,301,000 ounces of gold have been produced from the properties from and after July 1, 2019. For the properties contributed by Newmont, the 1.5% net smelter returns royalty is payable on all gold produced from these properties after 36,220,000 ounces of gold have been produced from the properties from and after July 1, 2019, and (ii) a separate and independent net smelter returns royalty on all copper produced from the Properties after 1,520,000,000 pounds of copper have been produced from these Properties from and after the July 1, 2019.
Each of these “retained royalties” is only payable once the aggregate production from the properties subject to the royalty exceeds the publicly-reported Mineral Resources and Mineral Reserves as of December 31, 2018.
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Table 3-7:    Royalties
Deposit
Royalty
South ArturoFranco-Nevada U.S. Corp.:  South Arturo, 4–9% variable GSR
CortezWard: Cortez, 5% NRR
Prochnau: Cortez, 2% NRR
Royal Gold: Cortez, 0.71250075% + sliding scale 0.4–5% GSR; 3.75% NVR; 0.7125075% and a sliding scale 0.72–9% GSR
Rio Tinto: Cortez, 0–3% sliding scale royalty based on gold price on 40% of production
Idaho Royalty Holders: Cortez, 1.28595% ORR, 0.78749925% GR
Denver Mining Finance Company: Cortez, 3.75% GR
Royal Crescent Valley: Cortez, 0.8545875% NVR; 1.25% NVR
Kelly and Moloney: Cortez, $0.5–$0.65/ton sliding scale (based on ore type and price)
Duerr & Prochnau: Cortez, 2% NSR
McCoy: Cortez, 4% NSR on hard rock and 1/6 production on coal, oil and gas; geothermal production royalty
Filippini: Cortez, 5% NSR on hard rock and 1/6 production on coal, oil and gas; geothermal production royalty
Robertson: Cortez, 4% NSR on hard rock and 1/6 production on coal, oil and gas; geothermal production royalty
Genesis–BluestarRG Royalties LLC: Genesis-Bluestar, 2% NVR
Franco-Nevada U.S. Corp.: Genesis–Bluestar, 6% NPI; 5% NPI; 4% NSR
GoldstrikeFranco-Nevada U.S. Corp.: Goldstrike, 2–4% NSR; 2.4–6% NPI
Royal Gold Inc.: Goldstrike, 1% NSR
Rhoads: Goldstrike, 5% NSR (net 2.5%)
Kennecott Nevada Company: Goldstrike, 5% NSR
White: Goldstrike, 9% NPI
Bilbao, Alcor Inc., Alloyed Associates, Inc: Goldstrike, 5% NSR
Gold QuarryVarious: Gold Quarry, 8% NSR and 62.7% of 8% NSR Mill and 68.7% of 8% NSR Leach
Tomera: Gold Quarry, 50% of 8% NSR
Jones: Gold Quarry, 50% of 8% NSR
Pacini: Gold Quarry, 1% NSR
Ash Danko Hanna & Co: Gold Quarry, 22.5% of 18% NSR
Roy Ash: Gold Quarry, 22.5% of 18% NSR
Franco-Nevada U.S. Corp.: Gold Quarry, 40.5% of 18% NSR
Gold Quarry Royalty Trust: Gold Quarry, 4.5% of 18% NSR
GoldrushIdaho Royalty Holders: 1.28595% ORR
Keleher and McLeod et al: 2-5 at 8.33% Variable NSR based on Gold Price
Teck American Incorporated: 10% NPR from Production
Englebright: 2% NPR
Genesis Gold: 3% NRR
Steiner: 0.2083% - 0.4167% Variable Production Royalty based on Gold Price
Royal Gold: 1% Net Reserves
Damele: 3% NSR
Royal Gold: 15%NPI
Idaho Resources Corporation: 0.75% GVR
TeckCominco: 3% NSR
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Deposit
Royalty
LeevilleRG Royalties LLC:  Carlin, Leeville 2% NVR
EMX Inc. (Bullion Monarch Mining Inc.): Leeville, 1% GSR
Quest U.S.A. Resources, Inc., et al: Leeville, 1% NSR (unpatented); 0.775% NSR (patented)
Long CanyonPittston Mineral Ventures International, Ltd: Long Canyon, 3% NSR
Mobil Exploration: Long Canyon, 0.15625% NSR
PhoenixFlowery Gold Mines Company: Phoenix, 3% NVR capped at $50,000
Rain–EmigrantPremier Gold: Emigrant/Rain, 1.5% NSR
Premier Gold/Boyack/Montrose: Rain/Emigrant 2.5% NSR
Boyack: Rain, 1% NSR
Tomera: Rain, 3% GPR
Jay Valcarce: Emigrant net 0.625% NSR
Tomera Stonehouse 50% and Tomera Clan 50%: Emigrant, net 2.5% NSR
RenVEK: Ren, 3–5% NSR based on PPI
Wallace: Ren, 3.5% NPR
Weiss: Ren, 4% GPR
RobertsonIdaho Royalty Holders: 1.28595% ORR
Billie Filippini: 3% GR
Northern Nevada Au, Inc.: 4% GR
Turquoise Ridge ComplexRG Royalties LLC: 2% based on production
UMETCO Minerals: 2% NSR
Note: Royalties listed can pertain to single claim, to a group of claims, and therefore can apply to only a portion of a deposit, or to the overall deposit area. There is a process for Premier Gold to assign the royalty interests in Rain–Emigrant to i-80 Gold; however the process is not complete, and Premier Gold remains the official royalty holder. GSR = Gross Smelter Royalty; NRR = Net Revenue Royalty; NPR = Net Profit Royalty; NSR = Net Smelter Royalty; NVR = Net Value Royalty; NPI = Net Profit Interest; GPR = Gross Proceeds Royalty; NPR = Net Proceeds Royalty; GR = Gross Royalty; ORR = Over Riding Royalty; PPI = Producer Price Index; GVR = Gross Value Royalty.
3.9.3    Nevada State Royalty
The State of Nevada levies royalties and taxes as outlined in Chapter 3.2.4.
3.10    Encumbrances
Permitting and permitting conditions are discussed in Chapter 17.9 of this Report. The operations as envisaged in the LOM plan are either fully permitted, or the processes to obtain permits are well understood and similar permits have been granted to the operations in the past, such as tailings storage facility (TSF) raises.
3.11    Violations and Fines
NGM advised the QP that as at December 31, 2021, no material violations or fines were imposed during 2021 by any regulatory authority that would affect the planned LOM for the Nevada Operations as presented in this Report.
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3.12    Significant Factors and Risks That May Affect Access, Title or Work Programs
To the extent known to the QP, there are no other known significant factors and risks that may affect access, title, or the right or ability to perform work on the properties that comprise the Nevada Operations that are not discussed in this Report.
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4.0    ACCESSIBILITY, CLIMATE, LOCAL RESOURCES, INFRASTRUCTURE AND PHYSIOGRAPHY
4.1    Physiography
The Nevada Operations are within the Great Basin, a part of the Basin and Range geologic province, which is dominated by north–south-trending mountain ranges, flanked by flat, arid valleys that may host playa lakes.
Operations are located between elevations of about 4,400–6,800 ft above mean sea level.
Vegetation is typically sparse, and can include shrubs such as sagebrush, rabbitbrush, and a variety of grasses. Juniper trees, pinion pine, and mountain mahogany can be found at higher elevations.
The most common current land use is for livestock grazing.
4.2    Accessibility
The Nevada Operations are bisected by Interstate 80 (I-80), which provides access to most of the Project area (refer to Figure 2-1).
Access for the Carlin Complex is generally from Elko 26 miles west on I-80 to Carlin which is the closest town to the mine sites. In addition, various alternate access routes use Nevada State Route 766, and Elko and Eureka County roads. These roads are well maintained, and most are paved.
The Cortez Complex is reached by travelling approximately 32 miles east from the town of Battle Mountain on the I-80. Alternative access is from Elko, Nevada, approximately 45 miles west to the Beowawe exit, then approximately 35 miles south on Nevada State Route 306, which extends southward from I-80.
The Long Canyon Complex is accessed from either the I-80 east-bound route through Wells or I-80 west-bound through Wendover, with the main entrance just off the Oasis/Montello interchange. The mine area is within one mile of the freeway with the pit area about four miles west.
The Phoenix Complex is accessed from I-80 at Battle Mountain, traveling approximately 12 miles south on the paved Nevada State Route 305, and then west a short distance on a paved/gravel county access road.
The Turquoise Ridge Complex is accessed from a turnoff at the settlement of Golconda, 25 miles east of Winnemucca, then following a paved road for a further 25 miles, and thereafter by an improved gravel road to the mine gates. It is then 10 miles to the west mine gate and 25 miles to the east mine gate.
The AOI is crossed by a network of gravel roads, providing easy access to various portions of the mining complexes and exploration areas. The majority of the roads are suitable for all-weather conditions; however, in extreme winter conditions, roads may be closed for snow removal.
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The Union Pacific Rail line runs parallel to I-80. NGM operates the Dunphy Rail Terminal, which is located 27 miles west of Carlin, for the transportation of bulk commodities such as lubricants, fuel, and ball mill consumables. These bulk commodities are road-transported from the Dunphy Rail Terminal to each site using commercial trucking services.
Elko is serviced by commercial flights to Salt Lake City, Utah.
4.3    Climate
The Nevada Operations are located in the high desert region of the Basin and Range physiographic province. There are warm summers and generally mild winters; however, overnight freezing conditions are common during winter.
Precipitation averages six inches per year, primarily derived from snow and summer thunderstorms. Typically, the months with the greatest precipitation are March, May and November. During the winter months at elevations above about 5,500 ft above sea level, precipitation generally occurs as snow. Evaporation is estimated at 42–44 inches per year.
Operations are conducted year-round.
4.4    Infrastructure
The Nevada Operations are located in a major mining region and local resources including labor, water, power, natural gas, and local infrastructure for transportation of supplies are well established. Mining has been an active industry in northern Nevada for more than 150 years. Elko (pop. 20,300) is a local hub for mining operations in northern Nevada and services necessary for mining operations are readily available.
There are adequate schools, medical services and businesses to support the work force. A skilled and semi-skilled mining workforce has been established in the region as a result of on-going mining activities. Workers live in the surrounding communities.
The Nevada Operations currently have all infrastructure in place to support mining and processing activities (see also discussions in Chapter 13, Chapter 14, and Chapter 15 of this Report). These Report chapters also discuss water sources, electricity, personnel, and supplies.
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5.0    HISTORY
A summary of the exploration and development history of the Nevada Operations from 1959 onwards is provided in Table 5-1.
Historical mining and exploration activity in the period from 1860–1950 included small underground and surface mines exploiting gold, copper, lead, antimony, barite and turquoise. Modern exploration activity by Newmont and Barrick and their predecessor companies, commenced in the late 1950s.
Table 5-1:    Exploration and Development History Summary Table, Carlin Complex
YearOperatorComment
1959American Exploration & Mining Co. (AMEX)
Wholly-owned US subsidiary of Placer Development Ltd. (subsequently Placer Dome Inc. (Placer Dome)
Lease-option agreement on the properties of the Cortez Metals Co. Explored mine workings and surrounding area.
American Smelting and Refining Company (Asarco)Purchased claims in Copper Canyon area from US Government
1961NewmontEvaluated Bluestar mine and Maggie Creek claims
1962Atlas Minerals (Atlas)Discovered low-grade gold mineralization in Goldstrike area
1962–1964Duval Corporation (Duval)Joint ventured Copper Canyon land package from Asarco; property transferred outright in 1964
NewmontExplored jasperoid outcrops located 4.5 km southeast of Bluestar, subsequently delineating the Carlin deposit
1963AMEXJoint venture with Idaho Mining Corp
1964AMEXFormed the Cortez Joint Venture (Cortez JV) with the added participation of the Bunker Hill Co., Vernon F. Taylor, Jr., and Webb Resources Inc.
1965NewmontCommenced mining operations at Carlin
1966USGSNoted anomalous gold in altered outcrops at the base of the Cortez Range
Cortez JVDiscovered Cortez deposit
1966–1978DuvalCommenced copper and gold mining at Copper Canyon feeding a heap leach and mill. Converted mill to gold only in 1976.
1969Cortez JV
Exploration drilling in Gold Acres area
Construction of Cortez Mill No. 1
1972NewmontAcquired Bluestar and Bootstrap deposits
1974Nevada SyndicateOutlined shallow mineralization in the Long Lac and Winston areas
1975–1977Polar Resources (Polar)/Pancana Minerals Ltd (Pancana)Delineated the Number 9 deposit and several low-grade zones within the Goldstrike intrusion to the east of Nevada Syndicate property. From 1975 to 1977, Polar and Pancana operated a small open pit and heap leach
1976Cortez JVDiscovered Horse Canyon deposit
1977NewmontNorthstar deposit discovered. Mill 1 in operation
1978Western States Minerals Corporation (Western States)Entered into a JV with Pancana. Open pit mining operations continued, with the bulk of the production from oxidized zones, chiefly from the Long Lac, Bazza, and West Bazza deposits, plus some production from deposits within the Goldstrike intrusion
DuvalCommenced mining of Tomboy and Minnie deposits
1980NewmontEmigrant and Gold Quarry deposits discovered
Early 1980sDuvalDiscovered Northeast Extension (NEX), Upper Fortitude, and Lower Fortitude deposits
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YearOperatorComment
1982Western StatesPost deposit discovered
1984First Mississippi Corporation/FRM Minerals Inc.Purchases Getchell property.
Gold Fields Mining Corporation (Gold Fields)Discovers Chimney Creek gold deposit.
1985NewmontCommissions Mill 2 at Gold Quarry
DuvalBattle Mountain created to hold assets in Copper Canyon area
1986Western StatesDeep Post deposit discovered
First Mississippi Corporation/FRM Minerals Inc.Heap leaching of historic Getchell dumps, drill programs to identify additional mineralization in historic workings. Completed feasibility study on Getchell deposit.
1986–1987American Barrick Resources Corporation (American Barrick)Acquired Western States, and acquired Pancana’s interests in the Goldstrike area
1987ECM, Inc. (ECM)Overstaked Cortez JV placer claims with lode claims in Pipeline South area; leased claims to Royal Gold Inc. (Royal Gold)
Royal Gold/Cortez JVFormed the Royal/Cortez Joint Venture to resolve claim conflict
Gold FieldsCommences gold production from Chimney Creek.
Santa FeDiscovers Rabbit Creek gold deposit.
1987–1988American BarrickBetze, Screamer, Deep Star, Rodeo, Meikle (previously named Purple Vein), South Meikle, and Griffin deposits/zones discovered
1987–1995First Miss Gold Inc. (First Miss)Subsidiary of First Mississippi Corporation created to conduct mining operations at Getchell. Open pit mining began in 1989. Getchell Main underground deposit identified in 1993, with production beginning in 1995. Turquoise Ridge Underground deposit discovered in 1993.
1987–1989Royal GoldConducted geophysical surveys and drilling programs, identifying low-grade gold mineralization
1988NewmontCommissioned Mill 3 at Rain and Mill 5 (now referred to as the Gold Quarry concentrator) at Gold Quarry
1989NewmontCommissioned Mill 4 in the North Area
Santa FeCommences gold production from Rabbit Creek.
1990American BarrickAutoclave operations begin at Goldstrike
Royal GoldAddition of roasting circuit to Cortez Mill No. 1
1991Cortez JV
Royal/Cortez Joint Venture terminated. Cortez JV leased Pipeline South area directly from ECM
Discovered Pipeline and Gap deposits
Hanson Natural Resources Company (Hanson)Acquires Gold Fields.
1993Santa FeAcquires Chimney Creek operations following an asset exchange with Hanson. Consolidates Rabbit Creek and Chimney Creek into the Twin Creeks operations
1994NewmontCommissioned Mill 6 (now Gold Quarry) roaster at Gold Quarry
1994–1999Pittston Nevada Gold Corporation (Pittston)Geochemical sampling and RC drilling on west side of Pequop Mountains identified gold anomalies in the Long Canyon area.
1996Cortez JV
Construction of Cortez Mill No. 2
Used geochemical and geophysical surveys to guide deep reverse circulation (RC) drilling, initially focusing on an area immediately west of the Cortez Fault
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YearOperatorComment
1996–1998Getchell Gold Corporation (Getchell Gold)First Miss changes name to Getchell Gold. Construction started on Turquoise Ridge Underground mine.
1997NewmontAcquires Santa Fe. Open pit portion of the Rabbit Creek deposit renamed to the Mega pit. Open pit portion of the Chimney Creek deposit renamed to the Vista pit. Pinon mill associated with the Mega pit, treating oxide ore. Sage and Juniper mills associated with Vista pit treating refractory and oxide ore, respectively.
1998Placer Dome Inc. (Placer Dome)Announces merger with Getchell Gold. Suspends Turquoise Ridge Underground operations in 1999, and closes entire property in 2002. Operations restart at Turquoise Ridge Underground in 2003.
Cortez JVDiscovered Crossroads and Pediment deposits
1999American Barrick/NewmontAsset exchange to rationalize the ownership and control of both the surface and subsurface estates that were jointly owned by the parties and to reduce the number of complex agreements that were needed to permit efficient operation and development of properties owned by both companies
Cortez JVCortez Mill No. 1 placed on care and maintenance
2000American BarrickRoaster operations begin at Goldstrike
2001NewmontMerged with Battle Mountain
2002Cortez JVDiscovered Cortez Hills deposit
2003Placer Dome/NewmontForm the Turquoise Ridge Joint Venture, 75% Placer Dome interest, 25% Newmont interest.
2004Cortez JVDiscovered Cortez Hills Lower Zone
2005PittstonSold Long Canyon area land package to AuEx
2006BarrickAcquired Placer Dome, obtained 60% interest in Cortez JV; obtained interest in Turquoise Ridge Joint Venture
2006NewmontCommenced mining at Copper Canyon; renamed to Phoenix
2007NewWest GoldJoint venture with AuEx.
2007–2011Fronteer GoldAcquired NewWest Gold. Completes major drill program
2009–2018BarrickCloses Getchell underground mine. Evaluation drilling of Vista underground area. North Portal developed 2011. South Portal developed 2013, after which Vista underground put on care and maintenance. Mining recommenced at Vista underground in 2018.
2011BarrickDiscovered Goldrush deposit
NewmontAcquired Fronteer Gold
2016NewmontCommenced mining at Long Canyon
2019Barrick/NewmontEstablished NGM JV
2021NGMCompleted updated feasibility study on the Goldrush deposit
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6.0    GEOLOGICAL SETTING, MINERALIZATION, AND DEPOSIT
6.1    Deposit Type
The deposits that comprise the Nevada Operations are considered to be examples of Carlin-style carbonate-hosted disseminated gold–silver deposits and intrusion-related gold–copper–silver skarn deposits.
Host rocks for Carlin-style deposits are most commonly thinly-bedded silty or argillaceous carbonaceous limestone or dolomite, commonly with carbonaceous shale. Although less mineralized, non-carbonate siliciclastic and rare metavolcanic rocks can locally host gold that reaches economic grades. Felsic plutons and dikes may also be mineralized at some deposits. Deposits typically have a tabular shape, are stratabound, localized at contacts between contrasting lithologies, but can also be discordant or breccia-related. Mineralization consists primarily of micrometer-sized gold and sulfide grains disseminated in zones of siliciclastic and decarbonated calcareous rocks and are commonly associated with jasperoids. Major ore minerals include native gold, pyrite, arsenopyrite, stibnite, realgar, orpiment, cinnabar, fluorite, barite, and rare thallium minerals. Gangue minerals typically comprise fine-grained quartz, barite, clay minerals, carbonaceous matter, and late-stage calcite veins.
Host rocks for intrusion-related gold–copper–silver skarn deposits include sedimentary carbonates, calcareous clastic rocks, volcaniclastic rocks or (rarely) volcanic flows. They are commonly related to high to intermediate-level stocks, sills, and dykes of gabbro, diorite, quartz diorite, or granodiorite composition. Mineralization frequently displays strong stratigraphic and structural controls. Deposits can form along sill–dike intersections, sill–fault contacts, bedding–fault intersections, fold axes, and permeable faults or tension zones. Pyroxene-rich Au skarns typically contain a sulfide mineral assemblage comprising native gold ± pyrrhotite ± arsenopyrite ± chalcopyrite ± tellurides ± bismuthinite ± cobaltite ± native bismuth ± pyrite ± sphalerite ± maldonite. Garnet-rich Au skarns can contain native gold ± chalcopyrite ± pyrite ± arsenopyrite ± sphalerite ± magnetite ± hematite ± pyrrhotite ± galena ± tellurides ± bismuthinite.
6.2    Regional Geology
The geology of northern Nevada displays a complicated sequence of orogeny and tectonism, summarized from oldest to youngest (Stewart (1980) and Jory (2002)) in Table 6-1. A summary map showing the key regional features is included as Figure 6-1.
Figure 3-2 to Figure 3-6 included summary property geology maps for each of the major mining complexes.
6.2.1    Carlin Complex
Gold deposits within or adjacent to the Carlin Complex are hosted by lower Paleozoic sedimentary rocks that are subdivided into three major packages, as summarized in Table 6-2.
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Figure 6-1:    Regional Geology Plan
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Note: Figure provided by NGM, 2021. Black outline is the outline of the AOI.
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Table 6-1:    Regional Geology
AgeComment
Miocene14–20 Ma basin-and-range extension occurred with north–south faulting, deposition of volcaniclastic and sedimentary rocks in basins, and exposure of lower Paleozoic rocks.
EoceneExtension and magmatism. Emplacement during the Tertiary of felsic to intermediate dikes and associated small epizonal intrusions; some associated volcanism
Late JurassicLate/post-Elko Orogeny plutonism, stocks/dikes emplaced, and contact metamorphism
MesozoicLate Paleozoic tectonism during Early to Middle Pennsylvanian time (Humboldt Orogeny) followed by deposition of shelf carbonate sequences during the Middle Mississippian to Early Pennsylvanian. A third period of resumed uplift and folding, possibly related to the Early Triassic Sonoma Orogeny, was followed by the Early Cretaceous Sevier Orogeny, a period of eastward-directed folding and thrusting. These uplifts were accommodated by the development of north–northwest-striking faults and associated north–northwest-trending upright folds
Late Devonian to Early MississippianCompressional tectonism associated with the Late Devonian to Middle Mississippian Antler Orogeny resulted in regional-scale folding and east-directed imbricate thrusting of the westernmost siliciclastic package over the eastern carbonate package along the Roberts Mountains Thrust. The accreted mass formed the Antler highlands. Erosion of the highlands during the Middle Mississippian to Early Pennsylvanian shed an easterly-directed overlap assemblage of clastic rocks
Lower PaleozoicFrom the Cambrian to Early Mississippian, the northern portion of Nevada was situated along a stable paleo-continental margin. A westward-thickening, prism-shaped sedimentary package was deposited from the outer margins of the paleo-continental shelf into an adjacent oceanic basin. The western sedimentary package predominantly consisted of siliciclastic rocks whereas the eastern portion of the sedimentary package consisted primarily of silty carbonate rocks
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Table 6-2:    Lithological Setting, Carlin Complex
AssemblageFormationDescriptionNotesExample Deposits
EasternRoberts Mountains FormationSilty, fossiliferous, and laminated limestones; sedimentary breccias
Fossiliferous debris flows and 3–15 cm (1–6 inch) thick calcarenite beds are common in the uppermost 120 m (400 ft)
Lower 240 m (800 ft) of planar laminated silty limestone grading upward into wavy (“wispy”) laminated silty limestone with abundant bioclastic debris
Carlin, Betze, West Leeville, Pete, Screamer, Deep Post, Goldbug–Post, and Mike
Popovich FormationLimestones, limey mudstones and sedimentary brecciasInformally named Bootstrap limestone is as much as 390 m (1,300 ft) thick at the north end of the Carlin trend. Fossiliferous debris flows occur proximal to the Bootstrap limestoneBetze–Post, Genesis–Blue Star, Gold Quarry (Deep West), Meikle, Goldbug–Rodeo, Deep Star, Bootstrap-Capstone, and Dee-Storm
Rodeo Creek FormationSiltstones and argillites; containing basal and internal sandstone horizons
Upper portion may be removed by Roberts Mountains thrust
Flat-lying, 73–91 m (250–300 ft) thick silty to sandy facies informally named the Bazza Sands or Sandstone in the Goldstrike area
Basal calcarenite thins northward, and is mostly absent north of Betze-Post area
Portions of Leeville and Goldstrike underground (Upper Rodeo)
WesternVinini FormationSiltstones, mudstones, and chertsCapstone, Big Six, Crow, and Antimony Hill
Slaven FormationSiltstones, mudstones, and cherts
Elder FormationSiltstones, mudstones, and cherts
OverlapChainman FormationSandstone and conglomerate
Pilot FormationMudstonesRain, Emigrant
Guilmette FormationLimestones; micritic and stomatoporoid-bearing
Strata on the Carlin trend record at least three styles and orientations of contractional structures which form a consistent regional-scale deformation sequence (Rhys et al., 2015). Phase 1 deformation is associated with the Roberts Mountains thrust. Phase 2 deformation comprises development of north to northeast-trending, east-vergent folds, and Phase 3 deformation consists of northwest-trending, upright folds and reverse faults.
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Replacement and breccia mineralization styles may be associated with decalcification and clay alteration, dissolution breccias, silicification, development of silicified or jasperoidal breccias, cataclastic breccias and disseminated replacement in Jurassic dikes. The alteration styles can occur together, can zone outwards from faults, and can occur singly, preferentially affecting stratigraphic horizons lateral to faults.
Pervasiveness and intensity of alteration varies both within and between gold deposits, depending on magnitude of the mineralizing system, nature of the host rock, and structural preparation.
Carlin Trend-style mineralization consists primarily of micrometer-sized gold and sulfides disseminated in zones of siliciclastic and decarbonated calcareous rocks and commonly associated with jasperoids. Mineralization is predominantly in the form of oxides, sulfides, or sulfide minerals in carbonaceous rocks, and the ore type determines how and where it is processed.
6.2.2    Cortez Complex
The principal lithologies of the Cortez Complex are summarized in Table 6-3.
Most of the largest gold deposits within the Cortez Complex lie within approximately 300 ft of the Roberts Mountain Thrust at the base of the allochthonous upper plate. The stratigraphy is cut by a series of north–northwest, northwest, northeast, and north–northeast-striking high- and low-angle faults with extensive fracturing, brecciation, and folding. These faults both control and displace mineralization, with evidence for both dip-slip and oblique-slip displacements.
The alteration style at Cortez is similar to that described for the Carlin Complex.
Weathering has affected those deposits that are exposed on surface, resulting in oxide ores, which overlie the refractory sulfides. Weathering extends to about 60 m depth at Cortez.
Mineralization consists primarily of submicrometer- to micrometer-sized gold particles, very fine sulfide grains, and gold in solid solution in pyrite. Gold mineralization occurs disseminated throughout the host rock matrix in zones of silicified and decarbonatized, argillized, silty calcareous rocks, and associated jasperoids. Gold may occur around limonite pseudomorphs of pyrite and arsenopyrite.
6.2.3    Long Canyon Complex
The major lithologies of the Long Canyon Complex are summarized in Table 6-4.
Three sets of faults have been identified. The earliest structures are northwest-vergent reverse faults. Two generations of normal faults are present, the earlier normal fault set trends roughly north–south to 020°, while the later set of normal faults has a moderate to steep dip, both to the east and west, and strike between due north and 040°. The third fault set consists of subvertical, northwest striking strike-slip faults.
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Table 6-3:    Lithological Setting, Cortez Complex
AssemblageFormationAgeDescription
Eastern (autochthonous lower plate)Horse Canyon Formation (Rodeo Creek Formation equivalent)DevonianSiltstone, mudstone, chert and argillite
Wenban FormationEarly DevonianLimestone
Roberts Mountains FormationSilurian-DevonianSilty, fossiliferous, and laminated limestones; sedimentary breccias
Hanson Creek FormationOrdovicianDolomite and silty limestone
Eureka FormationOrdovicianQuartzite
Hamburg DolomiteCambrianLimestones and dolomites
Western (allochthonous upper plate)Slaven FormationDevonianChert with occasional thin interbeds of carbonaceous shale and limestone
Fourmile Canyon FormationSilurianChert, siltstone, argillite, and shale with a few thin beds of sandstone
Elder FormationSilurianFeldspathic silty sandstone, with interbeds of siltstone, tuffaceous shale, and thin chert
Valmy FormationOrdovicianMassive quartzite and sandstone interbedded with chert, shale, siltstone, greenstone, and minor limestone
Vinini FormationOrdovicianBedded chert and interbedded quartzite and shale, alternating carbonaceous shale and quartz siltstone, and irregularly interbedded shale, siltstone, sandstone, and limestone, and tholeiitic volcanic rocks
IntrusiveDikesPliocene–PleistoceneRhyolite
DikesPlioceneAndesite
DikesOligoceneBiotite–quartz–sanidine porphyry
PorphyryEocene
Dikes and sillsTertiaryDacite and rhyodacite
DikesJurassic–CretaceousFelsic and mafic intrusions
Gold Acres StockJurassic–Cretaceous
Granodiorite
Mill Canyon StockJurassicBiotite–quartz monzonite
Extrusive/VolcaniclasticFlowsPliocene–PleistoceneRhyolite
FlowsPlioceneAndesite
Caetano TuffOligoceneWater laid rhyolitic tuffs, together with lesser amounts of andesitic tuff, sandstone and conglomerate
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Table 6-4:    Lithological Setting, Long Canyon Complex
AgeUnitSubunitNote
QuaternaryAlluviumMixed lithology gravels
MesozoicLamprophyreIntrusive dikes and sills
OrdovicianPogonip GroupLC0Strongly lenticular laminated limestone.
LC1Non-laminated or indistinctly-laminated limestone
LC2Well-laminated limestone
LC3Mottled, stylolitic limestone, or locally dolomitized limestone, is typical and may display local wavy lamination
CambrianNotch Peak FormationLC4Typically dolomite, non-laminated, and commonly contains abundant Nuia (fossil algae)
LC5Upper portion has a distinctive zebra dolomite texture; lower portion is oolitic.
LC6Limestone, locally can be hydrothermally dolomitized
LC7Stylolitic limestone with coarse-grained fossiliferous intervals
Typical alteration assemblages include decalcification, argillization, oxidation, hydrothermal dolomitization and local silicification.
Gold mineralization is concentrated in Notch Peak and Pogonip limestone at the margins of the Notch Peak dolomite. Mineralization is both stratigraphically and structurally controlled. Mineralization occurs most commonly at the upper and lower margins of the dolomite, but primarily within the limestone units.
Gold occurs primarily in zones of polyphase dissolution breccias that are localized in minor faults and fold hinges in the structurally-complex areas along and adjacent to dolomite block margins. Two general phases of brecciation are present, including calcareous breccias and later, Fe ± As oxide-rich breccias, which carry the highest gold grades. Breccias are accompanied by variable pervasive silicification.
Mineralization consists primarily of sub-micrometer-sized gold particles along the margins of oxidized pyrite grains. Some gold grains were observed encapsulated in silica. Gold was also detected by scanning electron microscopy within an arsenical rim on one pyrite grain.
6.2.4    Phoenix Complex
The main geological units of the Phoenix Complex area are provided in Table 6-5.
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Table 6-5:    Lithological Setting, Phoenix Complex
AgeUnitNote
CenozoicVolcanic rocks and alluviumIncludes 3 Ma Pliocene olivine basalt flows and Quaternary–Tertiary alluvium
TertiaryTuff33 Ma Caetano welded siliceous tuff
CretaceousGranodiorite porphyry38 Ma Copper Canyon stock
Mississippian, Pennsylvanian and PermianHavallah sequence (formerly Pumpernickel Formation)Radiolarian ribbon chert, and argillite associated with variable, but generally subordinate, siliciclastic, calc-arenitic, and volcaniclastic turbidites and slump deposits
Pennsylvanian and PermianEdna Mountain FormationChert–pebble conglomerate and calcareous sandstone and siltstone
Antler Peak LimestoneLimestone unit, now recrystallized and metasomatized to marble or skarn
Battle Formationinterbedded calcareous to siliceous conglomerate and sandstone with lesser calcareous siltstone and shale
Upper Devonian to MississippianScott Canyon FormationBedded chert, marine siliciclastic sedimentary rocks, and massive to pillowed metabasalt with minor limestone and carbonaceous black chert
CambrianHarmony FormationPoorly-sorted feldspathic and micaceous sandstone, with lesser limestone and shale, which accumulated in a submarine fan setting
Two major regional scale north–south-striking faults demark the Phoenix mineralization corridor. The west boundary is the Copper Canyon fault zone (also known as the Canyon fault) and to the east, is the Virgin fault zone. Numerous subsidiary faults are developed in the vicinity of these main faults.
Hydrothermal alteration in the Project is centered on the Copper Canyon stock, which has produced about 4,200 acres of hornfels and skarn. Skarn alteration is hosted by all sedimentary rock units adjacent to the Copper Canyon granodiorite, with the reactive calcareous protoliths of the Edna Mountain Formation, Antler Peak Limestone and Battle Formation hosting the bulk of the skarn alteration. Alteration of the Copper Canyon stock consists of quartz–sericite–pyrite argillic, or propylitic, alteration.
Preferred host lithologies for gold mineralization are the Antler Peak Limestone and Battle Formation. Copper mineralization hosts include the Copper Canyon stock and Havallah sequence.
Gold mineralization occurs freely at gangue–gangue or at sulfide–gangue grain boundaries, and only rarely as inclusions within gangue minerals. Some inclusions were noted in quartz, pyroxene, epidote, and orthoclase. The remaining gold occurred as inclusions totally encapsulated by sulfide minerals including pyrite, pyrrhotite, and to a lesser extent arsenopyrite, chalcopyrite, and sphalerite. Silver minerals are dominantly electrum, hessite, and lesser argentite.
Copper oxide mineralization locally contains minor amounts chalcanthite, malachite, chrysocolla, azurite, and lesser cuprite. Enriched copper mineralization typically has chalcopyrite ± covellite present. Covellite locally rims chalcocite grains where the effects of oxidation are more advanced. In hypogene mineralization, chalcopyrite occurs as
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disseminations and bedded replacements with skarn and silicate minerals, and in conjunction with pyrite.
6.2.5    Turquoise Ridge Complex
The key lithologies of the Turquoise Ridge Complex are summarized in Table 6-6.
The Getchell Fault is a major north–south striking fault, and is a master fault to a number of steeply-dipping, north-striking faults to the east of, and antithetic to it. A series of high-angle normal faults strike northeast and dip steeply northwest in the Turquoise Ridge deposit area.
Contact metamorphic alteration is associated with the Osgood stock, forming skarns in carbonate-rich lithologies. Alteration not associated with the granodiorite consists of decalcification, argillization, silicification, and development of jasperoid bodies. Overprinting clay alteration is related to weathering processes.
Preferred host lithologies for gold mineralization are the Comus and Prebble Formations, followed by the Valmy and Etchart Formation
Sub-microscopic gold mineralization is associated with pyrite, arsenopyrite, quartz, calcite, realgar and orpiment. Gold-bearing zones can be located close to granodiorite dikes and beneath basaltic intrusions.
6.3    Property Geology
6.3.1    Carlin Complex
Carlin Complex deposits include the following zones or area:
South Arturo: South Arturo open pit, El Niño underground. Deposit length is about 1,970 ft, the deposit width is approximately 394 ft wide, and averages about 50 ft in thickness;
Betze–Post: Deep Post, Post, Betze, North Betze, West Betze, Screamer North Screamer, and West Barrel. Deposit lengths range from 2,000–5,300 ft, deposit widths are 1,000–4,500 ft, and deposit thicknesses range from 80–250 ft;
Meikle–Rodeo: East Banshee, West Banshee, Meikle, South Meikle, East Griffin, Extension, West Griffin, Rodeo, Barrel, West Rodeo, and North Post. Deposit lengths range from 1,500–3,100 ft, deposit widths are 200–2,300 ft, and deposit thicknesses range from 250–1,400 ft;
North Carlin: Tri-Star/Genesis (Silverstar, Bobstar, Goldstar, and Payraise), Perry, Lantern/Green Lantern, Exodus. Deposit lengths range from 900–10,000 ft, deposit widths are 550–6,000 ft, and deposit thicknesses range from 30–550 ft;
Carlin–Gold Quarry: Quarry Main, Deep West, Deep Sulfide Feeder, Chukar North, Chukar South, and Carlin. The Good Hope, Mac, Magpie, Southwest, Wedge areas do not have estimated mineral resources or mineral reserves. Deposit lengths range from 4,500–12,000 ft, deposit widths are 950–8500 ft, and deposit thicknesses range from 100–2000 ft;
Leeville: West Leeville, Turf, and Four Corners. Deposit lengths range from 2,000–4,600 ft, deposit widths are 300–5,200 ft, and deposit thicknesses range from 30–300 ft;
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Table 6-6:    Lithological Setting, Turquoise Ridge Complex
AgeUnit/LithologyComment
Quaternary and TertiaryAlluvials, gravels and minor tuff in low-lying fault-bounded graben areas.
TertiaryBasaltic and andesitic lavas and poorly-exposed silicic tuff. Age date of c. 22 Ma.
CretaceousOsgood Mountains plutonMedium-grained equigranular to porphyritic granodiorite stock and related dikes and sills of dacite porphyry.
c. 114 Ma dacite dikes
Mississippian-PermianHavallah FormationSiliciclastic and basaltic rocks
Pennsylvanian-PermianEtchart FormationVariably sandy/silty limestone, calcareous siltstone/sandstone and conglomerate.
Mid-Pennsylvanian (?)Battle FormationGray quartzite cobble conglomerate, with a gray sandy matrix.
OrdovicianValmy FormationPillow basalt flows with subordinate amounts of hyaloclastite, chert and argillite.
Cambrian–Ordovician (?)Comus FormationBlack shale, siltstone, and silty to fine-grained carbonate rocks. Basalt flows and ash to lapilli tuff and debris flows of basaltic composition. Abundant mafic and ultramafic alkalic sills intrude the laminated and thin-bedded sedimentary rocks.
CambrianPreble FormationBlack to gray, laminated silty mudstone, locally phyllitic. Siltstone, and shale with subordinate carbonate lenses.
CambrianOsgood Mountain FormationQuartz arenite, quartzite
South Carlin: Pete Bajo, Fence, Full House. Deposit lengths range from 2,000–4,000 ft, deposit widths are 500–900 ft, and deposit thicknesses range from 10 to 60 ft;
Emigrant: Emigrant. The deposit is 12,000 ft long, 3,300 ft wide, and has a thickness range from 10–330 ft.
Example cross-sections of deposits in the Carlin Complex are included as Figure 6-2 to Figure 6-6. A cross-section through the Meikle–Rodeo deposit is provided in Figure 6-7.
Geological, structural, alteration and mineralization descriptions were included in Chapter 6.3.1.
6.3.2    Cortez Complex
Cortez Complex deposits include the following deposits:
Cortez NW Deep and Cortez Hills open pit and underground: combined deposit lengths are 6,800 ft, 4,000 ft wide, and deposit thicknesses range from 10–350 ft;
Crossroads and Pipeline: deposit length is 11,000 ft, 3,400 ft wide, and deposit thicknesses range from 50–1,400 ft;
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Figure 6-2:    Geological Cross-Section, Goldstrike Area
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Note: Deposits shown in Goldstrike open pit area.
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Figure 6-3:    Geological Cross-Section, Gold Quarry Area
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Figure 6-4:    Geological Cross-Section, Exodus–Leeville Area
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Note: Deposits shown are Exodus (left) and Leeville (right)
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Figure 6-5:    Geological Cross-Section, Carlin–Pete Bajo Area
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Note: Deposits shown are Carlin (left) and Pete Bajo (right)
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Figure 6-6:    Geological Cross-Section, South Arturo Area
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Note: Figure prepared by NGM, 2021.
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Figure 6-7:    Cross-Section, Meikle–Rodeo Deposit
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Note: Figure prepared by Barrick, 2017.
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Gold Acres: deposit length is 7,000 ft, 2,600 ft wide, and deposit thicknesses range from 25–600 ft;
Goldrush: deposit length is 17,300 ft, 1,400 ft wide, and deposit thicknesses range from 10–350 ft;
Robertson: combined deposit lengths are 7,500 ft, 3,000 ft wide, and deposit thicknesses range from 150–1,400 ft.
Example cross- or long-sections of deposits in the Cortez Complex are included for Pipeline (Figure 6-8), Gold Acres (Figure 6-9), Goldrush (Figure 6-10), Robertson (Figure 6-11).
Geological, structural, alteration and mineralization descriptions were included in Chapter 6.3.2.
6.3.3    Long Canyon Complex
The Long Canyon complex consists of the Long Canyon deposit, which has a 13,000 ft strike length, is about 2,500 ft. wide, with mineralized zones varying in thickness from 20–250 ft.
An example geological section is provided in Figure 6-12.
Geological, structural, alteration and mineralization descriptions were included in Chapter 6.3.3.
6.3.4    Phoenix Complex
Phoenix Complex deposits include the following deposits:
Fortitude, Bonanza and Greater Phoenix: combined deposit lengths are 16,000 ft long, 3,900 ft wide, and the deposits have a thickness range from 20–550 ft.
An example geological section is provided in Figure 6-13.
Geological, structural, alteration and mineralization descriptions were included in Chapter 6.3.4.
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Figure 6-8:    Cross-Section Pipeline
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Figure 6-9:    Cross-Section Gold Acres
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Figure 6-10:    Long-Section Goldrush
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Figure 6-11:    Cross-Section Robertson
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Figure 6-12:    Cross-Section, Long Canyon Deposit
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Figure 6-13:    Cross-Section, Phoenix Deposit
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6.3.5    Turquoise Ridge Complex
Turquoise Ridge Complex deposits include the following deposits:
Turquoise Ridge Surface (Mega, Vista), Turquoise Ridge Underground (North and South), Vista Underground: deposit lengths range from 2,600–4,593 ft, deposit widths range from 984–2,600 ft, and deposit thicknesses range from 10 ft–98 ft.
An example geological section is provided for the Turquoise Ridge Underground in Figure 6-14 and for Vista underground in Figure 6-15.
Geological, structural, alteration and mineralization descriptions were included in Chapter 6.3.5.
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Figure 6-14:    Cross-Section, Turquoise Ridge Underground Deposit
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Figure 6-15:    Cross-Section and Plan, Vista Underground Deposit
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Note: Figure prepared by NGM, 2021.
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7.0    EXPLORATION
7.1    Exploration
7.1.1    Grids and Surveys
Prior to about 1985, surveys were completed by registered surveyors, using United States Geological Survey (USGS) base-stations, and optical instruments to survey collar locations and pit topography using angles and distances. Pre-mine topographic surveys were based on surface surveys, or alternatively, on airborne topographic surveys.
Current topographic surveys are completed on an as-needs basis. During operations, surveys may be completed daily; where no work is currently being undertaken, surveys may be years apart.
The datum used for each mine varies and could include mine grids, truncated State Plane NAD83 or NAD27, and truncated Universal Transverse Mercator. All sites have been translated to a NAD83 Zone 11 vertical datum 88 ft, which is used for regional programs.
7.1.2    Geological Mapping
Pre-mine geologic mapping was completed in eastern Nevada by geologists from the United States Geological Survey (USGS) and previous operators. From 1961 to date, surface-mapping was conducted at various scales, ranging from pit wall (1:1,200) to district (1:25,000) scales. Underground mapping is completed at scales ranging from 1:20 to 1:100.
7.1.3    Geochemistry
Geochemical samples were collected early in the Project history, and included stream sediment, soil, and rock chip samples. Owing to the long mining history within the AOI, geochemical sampling techniques used for grassroots exploration purposes have been typically superseded by data from drilling and open pit and underground mining. Current exploration typically does not use surface sampling methods, as the majority of the recent exploration successes are based on a combination of structural modelling and drilling to explore for mineralization at depth.
7.1.4    Geophysics
Geophysical methods have been used in Barrick, Newmont and NGM work programs within the AOI since 1973. From 1973–1993, geophysical tools were primarily regarded as support tools due to the initial discoveries cropping out on surface, or only having a thin veneer of cover, and the inability of the early methods to directly detect the deposits. Methods employed over the Project history included airborne and ground magnetics; radiometrics and electromagnetics (EM); gravity, resistivity, and controlled-source audio-frequency telluromagnetics (CSAMT) and magnetotellurics (MT); self-potential (SP); induced-polarization (IP); time domain pole-dipole IP; time domain MT/IP using a distributed assay system; electrical logging of drill holes; and downhole IP.
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Key uses of the geophysical survey data were to delineate intrusive rocks and thermal metamorphic halos, identify remnant-magnetized volcanic rocks and fault/structures, outline zones of pyrite at depth, and define zones of decalcification.
7.1.5    Petrology, Mineralogy, and Research Studies
Since 1961, a significant number of structural, petrology, mineralogy, lithogeochemical, and research studies have been completed on the gold and copper deposits within Northern Nevada, making the area one of the more intensively studied geologic provinces in the world. NGM maintains a database of such research as a reference tool for exploration purposes.
7.1.6    Qualified Person’s Interpretation of the Exploration Information
The exploration information was used to vector into potential mineralized zones. The exploration information has typically been superseded by the active mining operations.
7.1.7    Exploration Potential
Exploration potential exists adjacent to many of the deposits, along strike and at depth along favorable mineralized structures, and within favorable host lithologies.
7.2    Drilling
7.2.1    Overview
7.2.1.1    Drilling on Property
Across the entire AOI, drilling totals over 203,000 drill holes for >82 Mft of drilling.
Between 1905 and 1965–1966, drilling was completed primarily for early-stage, exploration-focused programs and for initial gold resource estimates. From 1966 onward, drilling was used to support advanced-stage project evaluation as well as deposit, pit, and underground delineation.
A drill summary table for the Project is provided in Table 7-1. Drill totals are broken out by complex in Table 7-2 to Table 7-6.
A drill collar location plan for the Project area is included in Figure 7-1. Drill collar locations for each mining complex are included as Figure 7-2 to Figure 7-7.
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Table 7-1:    Drill Summary Table, Mining Complexes
ComplexNumber of Drill Holes Drilled Metreage
(m)
Carlin108,9858,444,159
Cortez22,8224,109,018.7
Long Canyon3,485758,971
Phoenix7,591853,541
Turquoise Ridge24,2783,332,890
Total167,16117,498,579.7
Note: Metreage has been rounded; totals may not sum due to rounding.
Table 7-2:    Carlin Complex Drill Summary Table
Deposit/Area Drill Type Number of Drill Holes Drilled
Footage
(ft)
Drilled
Metreage
(m)
Betze–Post Core 2,7471,551,289472,833
Cubex 
RC 19,9764,713,2711,436,605
Sub-total 
22,7236,264,5601,909,438
Meikle–Rodeo Core 6,0062,709,801825,947
Mud-rotary 2923,8447,268
RC 32,9157,013,1562,137,610
Sub-total 
38,9509,746,802460.2
Tristar Air-rotary 1,697462,514140,974
Core 965595,179181,411
Mud-rotary 3550,07915,264
RC 3,5271,951,985594,965
Sub-total 
6,2243,059,757932,614
Perry Core 51,776541
RC 244100,59530,661
Sub-total 
249102,37131,203
Green Lantern Air-rotary 23876,45423,303
Core 451355,762108,436
Mud-rotary 2039,00311,888
RC 1,248772,498235,457
Sub-total 
1,9571,243,717379,085
Exodus/Northwest Exodus Underground RC 607111,66036,168
Underground core 847696,159212,189
Surface RC and core 830634,742193,469
Sub-total 
2,2841,449,561441,826
Gold Quarry Air-rotary 1,412654,604199,523
Core 1,8891,069,366325,943
Cubex 1,665151,31746,121
Mud-rotary 221260,77579,484
RC 4,4452,918,072889,428
Sub-total 
9,6325,054,1341,540,499
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Deposit/Area Drill Type Number of Drill Holes Drilled
Footage
(ft)
Drilled
Metreage
(m)
Leeville *Underground conventional 1,724110,47733,682
Underground RC 9,1211,270,049387,210
Underground core 4,3961,906,229586,532
Surface RC and core 317735,956224,377
Sub-total 
15,5584,022,7111,231,801
Pete Bajo Underground conventional 1,25244,53613,575
Underground RC 4,123509,294155,238
Underground core 2,3201,167,553355,882
Surface RC and core 1,411702,565214,142
Sub-total 9,1062,423,949738,843
South Arturo UGUnderground RC16632,7359,978
Underground core5319,0035,792
Surface RC303261,71279,770
Surface Core11663,69219,416
Subtotal638377,141114,953
South Arturo OP*Underground RC772107,60932,799
Underground Core375134,35040,950
Surface RC1,5481,041,650317,495
Surface Core306385,679116,945
Rotary536219,73766,976
Subtotal3,5371,887,024575,165
Emigrant Air-rotary 7129,8559,100
Core 4112,0073,660
RC 1,311416,565126,969
Sub-total 
1,425458,427139,728
Ren *Underground RC and Core7,9601,593,070485,568
Surface RC and core 7691,335,691407,119
Sub-total 
8,7292,928,761892,686
North LeevilleUnderground conventional 
Underground RC 
Underground core 
Surface RC and core 112216,00765,874
Sub-total 
112216,00765,874
Totals108,98537,430,4078,444,159
Notes: Note: Metreage has been rounded; totals may not sum due to rounding. Leeville includes Rita K, Ren includes part of Meikle-Rodeo, South Arturo open pit includes part of South Arturo underground
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Table 7-3:    Cortez Complex Drill Summary Table
Drill TypeNumber of Drill HolesDrilled Feet
(Mft)
Drilled Meters
(Mm)
Air rotary17036,59211,153.2
Core3,2591,848,861563,532.9
Mud rotary146105,68132,211.6
Reverse circulation and Cubex18,6749,488,6702,892,146.5
Other *3,0292,001,229609,974.5
Total22,82213,481,0324,109,018.7
Note: Metreage has been rounded; totals may not sum due to rounding.
Table 7-4:    Long Canyon Complex
Drill TypeNumber of
Drill Holes
Drilled Meters
Core2,096558,509
RC1,373193,960
RC pre collar/core tail166,501
Total3,485758,971
Note: Metreage has been rounded; totals may not sum due to rounding.
Table 7-5:    Phoenix Complex
Drill TypeNumber of
Drill Holes
Drilled Meters
Core74398,616
RC5,045595,706
RC pre collar/core tail594159,219
Unknown1,20998,165
Total7,591853,541
Note: Metreage has been rounded; totals may not sum due to rounding.
Table 7-6:    Turquoise Ridge Complex
Drill TypeNumber of
Drill Holes
Drilled Meters
Core8,6101,412,297
RC and Cubex15,6681,920,593
Total24,2783,332,890
Note: Metreage has been rounded; totals may not sum due to rounding.
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Figure 7-1:    Drill Collar Location Plan, AOI
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Note: Figure prepared by Newmont, 2021.
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Figure 7-2:    Carlin Complex Drill Collar Location Plan, North Area
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Figure 7-3:    Carlin Complex Drill Collar Location Plan, South Area
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Figure 7-4:    Cortez Complex Drill Collar Location Plan
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Note: Figure prepared by NGM, 2021.
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Figure 7-5:    Long Canyon Complex Drill Collar Location Plan
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Note: Figure prepared by NGM, 2021. Map north is to top of illustration.
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Figure 7-6:    Phoenix Complex Drill Collar Location Plan
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Note: Figure prepared by NGM, 2021. Map north is to top of illustration.
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Figure 7-7:    Turquoise Ridge Complex Drill Collar Location Plan
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Note: Figure prepared by NGM, 2021.
7.2.1.2    Drilling Supporting Mineral Resource Estimates
Any of the drill types noted in Chapter 7.2.2 can be used in estimation; however, the majority of the current estimates are supported by RC and core drilling.
7.2.1.3    Drilling Excluded For Estimation Purposes
Drill holes can be excluded from supporting estimates if there is sufficient uncertainty in location or orientation, or quality of assays. Where drill holes intersect the interpreted mineralization at significantly oblique angles, they may be excluded at the discretion of the modeler.
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7.2.2    Drill Methods
Over the Project history, drilling included reverse circulation (RC), core, air rotary, mud rotary, and Cubex methods. Churn drilling was used in areas was completed in areas known to host placer gold. The majority of the areas where air rotary, mud rotary, Cubex and churn methods were used are mined out.
RC diameters were typically 5.5–6.5 in. Core sizes are typically HQ (2.5 in diameter) for surface drilling. Occasionally, surface core holes were reduced from HQ size to NQ (1.9 in) size if difficult drilling conditions were encountered. Surface metallurgical core included PQ (3.3 in), and SHR series (3.3 in; 4 in or 6 in) core.
7.2.3    Logging
Logging conducted depended on the operator of the complex at the time the information was collected, and the drill type. Typically, logging collected information such as lithology, stratigraphy, basic structural data, recovery, alteration, and mineralization. For mining operations, logging could also record metallurgical type, intensity codes for metallurgy and alteration, and geotechnical parameters such as rock quality designation (RQD) and number of fractures per foot, and comments by the geologist.
7.2.4    Recovery
Recoveries have been measured for the majority of the core holes. Procedures are in place to mitigate instances where core recovery becomes poor. Conversely, in areas of competent hard mineralization, core recoveries are at 95–100%.
7.2.5    Collar Surveys
During early operations, exploration and development drill programs, collar grid coordinates were determined by optical surveys, field estimates, Brunton compass and pacing, compass-and-string distance measurements, and for underground operations, measurements from surveyed control points, face, ribs and sill to triangulate each collar location.
Currently, the operations typically make use of laser survey or digital geographic positioning system (GPS) measurements to locate drill hole collars.
7.2.6    Down Hole Surveys
Determination of the hole trace was historically accomplished by projection of the initial collar orientation, using a downhole single-shot or multi-shot film camera (typical for most underground surveys), use of a downhole precession gyroscopic survey tool, or a gyroscopic tool requiring initial orientation with a compass.
Either north-seeking or conventional gyroscopic tools, or a combination, are used currently for down-hole survey purposes. Gyroscopic surveys are typically reported at 25 or 50 ft intervals.
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7.2.7    Comment on Material Results and Interpretation
Drill spacing varies by complex, depending on deposit type and assumed or actual mining method:
Carlin: approximately 6–21 m in the better drilled deposit areas to about 30–134+ m spacing on the less well drilled portions of the deposits;
Cortez: approximately 9–15 m in the better drilled deposit areas to about 31–98+ m spacing on the less well drilled portions of the deposits;
Long Canyon: approximately 8–11 m in the better drilled deposit areas to about 23–46+ m spacing on the less well drilled portions of the deposits;
Phoenix: approximately 5–6 m in the better drilled deposit areas to 67+ m spacing on the less well drilled portions of the deposits;
Turquoise Ridge: approximately 6–13 m in the better drilled deposit areas to about 30–91+ m spacing on the less well drilled portions of the deposits.
Drilling and surveying were conducted in accordance with industry standard practices at the time the information was collected, and provide suitable coverage of the zones of gold ± copper mineralization. Drilling methods provide reasonable core recovery. Logging procedures provide consistent descriptions.
These data are considered to be acceptable for mineral resource and mineral reserve estimation. There are no drilling or core recovery factors known to the QP that could materially impact the accuracy and reliability of the results.
7.3    Hydrogeology
Information obtained during early-stage hydrological and hydrogeological evaluations is superseded by data obtained from many years of mining activities.
In areas where new mining activity is planned in stand-alone projects, such as at Goldrush, additional hydrological and hydrogeological data collection is underway.
Dewatering is performed where required in the operations, using dewatering wells, or advanced development (normally with drain holes) which may later be used for mining purposes, drain holes drilled from existing excavations, or development headings and sumps.
7.3.1    Sampling Methods and Laboratory Determinations
Hydrogeology data, including pore pressure distribution and ground-water flow, were normally collected from geotechnical investigations in pre-construction studies and later from on-going programs in operating mines.
The primary method for collection of hydrology data is a large network of vibrating wire piezometers. These vibrating wire piezometers provide water level data. QA/QC is achieved by redundancy in network and annual audits of sensor parameters and performance.
Another source of data is hydrologic testing. Most wells that are drilled are subjected to extensive hydrologic testing to establish aquifer parameters. These tests are typically injection
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(slug) tests, spinner tests, step test, packer tests, short-term pump tests and long-term pump tests. These tests are analyzed using classical hydrology methods. Most of the aquifers on site are in fractured bedrock and therefore, fracture-flow controlled, in-situ testing is relied upon more heavily than laboratory testing; however, in some of the alluvial aquifers additional logging/laboratory testing of sonic cores is done. The laboratory tests are completed to establish a detailed log (USGS Soil Classification), moisture content, Atterberg limit, grain size distribution, specific gravity and permeability (flex-wall permeability tests). Numeric models have been developed using parameters from above-mentioned methods and geological modelling.
7.3.2    Comment on Results
A combination of historical and current hydrological and hydrogeological data, together with mining experience, are used to prepare the mine designs, dewatering plans and monitoring for existing and planned operations.
7.3.3    Groundwater Models
Where hydrological conditions warranted, groundwater models were prepared using industry-standard water modelling software.
7.4    Geotechnical
Information obtained during early-stage geotechnical evaluations is superseded by data obtained during mining activities.
7.4.1    Sampling Methods and Laboratory Determinations
Geotechnical core logging and in-situ geotechnical mapping are the principal data collection methods. Geotechnical core logging is directly inputted into the digital logging database, acQuire. If surface access (e.g., open pit) or underground access (e.g., mine workings) is available, then the geotechnical core logging results may be confirmed or supplemented with in situ assessment of geotechnical domains using geotechnical mapping of active development and/or window or scanline mapping.
Typical data collected in logging and mapping programs include physical rock properties and joint wall conditions used to determine rock mass characterization. Data collected can include RQD, joint frequency, number of joint sets, joint roughness, joint alteration, joint in-filling, point load tests, rock mass fabric characterization and information on discrete structural features. Rock mass characterization systems employed can include rock tunnelling quality index (Q system), rock mass rating (RMR), mining rock mass rating (MRMR) and geological strength index (GSI).
Typical structural characterization consists of documenting joint sets (including bedding, foliation), faults, shear zones, and dikes through core intercepts, televiewer surveys or in situ mapping. Data collected can include observations such as dip, dip direction, spacing, thickness and persistence.
Laboratory testing samples are taken from diamond core during logging efforts and sent to independent rock testing laboratories for testing. Intact rock properties are characterized
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through field and laboratory testing as required. Properties to be quantified can include Unconfined Compressive Strength (UCS), Young’s modulus, Poisson’s ratio, tensile tests and direct shear tests. Multiple samples are taken for each rock unit to account for any irregularities within the core specimens.
Field stress characterization is conducted using documented observations (disking and breakouts), documented back analysis, field measurements and regional stress models. Observation of disking in geological core logging is used to identify zones of stress differential within the rock mass. Stress differential is typically encountered where there is a mechanical contrast in material stiffness, typically between two geotechnical domains.
In active operations, data collection includes inspection of active headings on a basis stipulated by the individual mine site., and determinations if the support system installed is appropriate for the in-situ ground conditions.
Backfill is routinely tested to validate mix design and quality. Underground sites test backfill in on-site laboratories for unconfined compressive strength. External laboratories are utilized to conduct testing outside of the capacity of the site. These tests may include Young’s Modulus, Poisson’s ratio and tensile testing.
Ground support, used in the support of mine workings, is routinely tested to confirm quality of installed elements. Quality assurance and quality control (QA/QC) practices include pull testing of rock bolts to validate material and installation quality, and UCS testing of shotcrete/fibercrete to confirm batching and mix design.
A range of geotechnical monitoring systems are employed at the underground sites. These systems can include extensometers, either single-point or multi-point units, closure stations, load sensing instruments and sloughmeters. Microseismic arrays, consisting of both uniaxial and triaxial geophones, collect seismic data at mines where seismicity is identified as a geotechnical risk.
7.4.2    Comment on Results
A combination of historical and current geotechnical data, together with mining experience, are used to engineer ground support guidelines and procedures that all ground support designs must follow. These data and mining experience support the geotechnical operating considerations used in the mine plans in Chapter 13 of this Report.
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8.0    SAMPLE PREPARATION, ANALYSES, AND SECURITY
8.1    Sampling Methods
Sampling is variable by mining complex and mineralization style.
Air-rotary and mud-rotary drill holes were sampled on 5–100 ft intervals. Cubex drilling was sampled on 5–10 ft intervals. RC drill holes were typically sampled on 5 ft intervals. Core samples were nominally taken at 5 ft intervals, but could vary to a minimum of 1 ft to respect lithological contacts.
8.2    Sample Security Methods
Sample collection from drill point to laboratory relied upon the fact that samples were either always attended to, or were stored in locked on-site preparation facility, or stored in a secure area prior to shipment to the external laboratory. Chain-of-custody procedures consisted of filling out sample submittal forms to be sent to the laboratory with sample shipments to ensure that all samples were received by the laboratory.
8.3    Density Determinations
The majority of the data were from measurements collected by exploration or mine site personnel using the water displacement method. These data were used to support mineral resource and mineral reserve estimates.
In some instances, verification of the site procedures was performed by external laboratories, using selected core pieces. Verification laboratories included, where known, Zonge Engineering in Tucson, AZ (Zonge); Elliot Geophysical Laboratories (Elliot); and AGRA Metallurgical Laboratory in Reno (AGRA).
8.4    Analytical and Test Laboratories
Given the long history of the Nevada Operations, there are numerous laboratories that were used over the Project history. These include, where known:
Independent laboratories: ALS Chemex in Elko, Nevada, ALS Chemex in Winnemucca, ALS Chemex in Sparks, Nevada (ALS Reno) and Vancouver, Canada (ALS Vancouver); American Assay Laboratories in Sparks, Nevada (AAL Sparks); Analytical Services Laboratory; Barringer Laboratories in Reno, Nevada (now BSI Inspectorate); Bondar-Clegg Laboratory in Reno (now ALS Chemex); BSI Inspectorate Laboratory; Core Laboratory; Golden Giant Laboratory; GSI; Hazen Research Laboratories; Lakefield Metallurgical Consultants; Legend Laboratories; McClelland Laboratory; Monitor Hesperia, CA Laboratory; Monitor Geochemical Laboratory in Elko, Nevada; Rocky Mountain Geochemical Laboratory; SGS Mineral Services; Shasta Analytical; Skyline Laboratories in Tucson, Arizona; Treweek Laboratory; Universal Laboratory Inc.; Valmy Trend Arev Source; X-Ray Assay Laboratory Toronto, Canada;
Non-independent laboratories: Cortez mine laboratory; Battle Mountain mine laboratory; Duval laboratory (became Battle Mountain); Lone Tree laboratory; Newmont Gold
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Laboratories; Newmont Metallurgical Services; Placer Dome Research Centre, Vancouver, Canada; Turquoise Ridge Underground laboratory.
In the earlier stages of Project testwork, the idea of laboratory accreditation had not been developed. In later assay campaigns, accreditations were not typically recorded in the database.
Currently, the following laboratories are used by the Nevada Operations:
The ALS Chemex Elko and ALS Chemex Reno facilities are used for sample preparation, and hold ISO 17025 accreditation for sample preparation. The ALS Chemex facilities in Reno and in Vancouver BC are used for analytical determinations and hold ISO 17025 accreditations for selected analytical techniques. ALS Chemex is independent.
The AAL facility located in Sparks, Nevada is used for sample preparation, analysis, and check assaying. AAL holds ISO 17025 accreditations for selected analytical techniques and is independent;
The mine laboratories are operated by NGM personnel, are not accredited, and are not independent.
8.5    Sample Preparation
Sample preparation has varied over the more than 60 years of modern Project history, in line with advancing scientific knowledge, changes in equipment, and operational experience. Currently, sample preparation procedures include:
ALS Chemex: drying the sample, crushing to 70% minus 10 mesh, and then pulverizing to >85% minus 200 mesh;
AAL: drying the sample, crushing to 95% passing 10 mesh, and then pulverizing to >90% passing 105 μm (150 mesh);
Mine laboratories: drying the sample, crushing to 65% passing 10 mesh, and then pulverizing to 80% passing 200 mesh; or crushing to 95% passing 10 mesh and pulverizing to 95% passing 175 mesh; or crushing to minus 9.5 mm, and pulverizing to 90% passing 150 mesh.
8.6    Analysis
As with sample preparation, analytical methods have changed over the Project history. Currently, sample analytical procedures include:
ALS Chemex: fire assays (FA) and atomic absorption (AA) finish for gold; samples reporting >0.1 oz/st Au on the initial assay re-assayed by FA with gravimetric finish; cyanide leach gold assays for initial FAs >0.008 oz/st Au; cyanide leach and preg rob capacity; LECO testing; multi-element analyses by aqua regia digestion/inductively coupled plasma-atomic emission spectroscopy (ICP-AES)/ICP-mass spectroscopy (ICP-MS), 51 elements or 48 element analyses by four acid and ICP-AES/ICP-MS; other analyses may be requested, and include arsenic, total carbon, total sulfur, sulfide sulfur, carbonate carbon, and organic carbon;
AAL: 1 assay ton fire assays with an AA finish for gold;
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Mine laboratories: 1 assay ton fire assays with an AA finish for gold; samples with gold grade >0.438 oz/st are completed by a ½ assay ton fire assay with a gravimetric finish. If the sample gold grade is above the open pit cut-off grade, the samples are analyzed for cyanide leach, % preg rob, total carbon, total sulfur, sulfide sulfur, carbonate, and organic carbon for ore characterization purposes. On request, underground muck samples can be equal weight composited for further ore characterization analyses including total carbon, total sulfur, sulfide sulfur, carbonate carbon, organic carbon, and arsenic.
Additional assay methods, as recorded in the Project databases were typically used for exploration or other specialized purposes such as gas sampling and were not consistently requested. They include: gravimetric, sulfuric acid digest, total copper, neutron activation analysis, X-ray diffraction (XRD), X-ray fluorescence (XRF) and pH methods.
8.7    Quality Assurance and Quality Control
Prior to the mid-1990s, few companies had rigorous quality assurance and quality control (QA/QC) programs in place. QA/QC had typically consisted, where undertaken, of reanalysis of drill core or other samples when later sampling indicated a potential problem.
In the case of the NGM Operations, QA/QC samples were submitted for RC and core samples from about 1990. Typical QA/QC measures include submission of blank materials, certified or standard reference materials (standards), and field duplicate samples. Depending on the time period, the rate of insertion of field duplicates can range from 1–5% of a field program; standard and blank insertion rates can range from between 2–5%.
NGM purchased SRMs from well-known Canadian distributors. These could be commercial standards, or standards generated from bulk samples of deposits within the NGM Operations area. Standards typically represent very high-grade, high-, medium-, and low-grade in oxide and refractory gold mineralization. Blank materials came from a variety of sources, most recently gravel purchased from local hardware stores, landscape marble, and gravel sourced from quarry sites within the operations areas.
Check assays may not be routinely performed. Typical checks were undertaken on pulps and coarse reject samples to test the analytical processes and preparation procedure, respectively.
Project geologists review the assay results and periodically request a batch re-run and/or entire hole based on expected versus actual results. Analyses that appear to be outside best practice guidelines for exploration of two standard deviations will result in a request of the laboratory that completed the original analysis to undertake a re-run of the sample batch that the failed control was in. Check assay programs are the responsibility of the individual geologists.
Several systems and programs are used to control and ensure assay data quality. These include standards for technician training, periodic process checks, equipment preventive maintenance, centralized reagent/standard preparation, control samples (reference materials) and blanks assayed with the samples, data verification, periodic check assays, and participation in industry round-robin programs.
8.8    Database
Exploration data from a variety of sources are imported into acQuire databases using a variety of techniques and procedures to check the integrity of the data entered.
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Since the mid-1990s, geological and geotechnical data have been validated by software routines and uploaded directly into the database from the field logging instruments. Analytical data are uploaded from digital sources provided by the analytical laboratories via website. Survey data are uploaded by the project geologist from digital survey files. Density data are imported by the database administrator from a spreadsheet sent from the internal mine laboratory or by download from the external laboratory website.
Verification is performed on all digitally collected data upon upload to the main database, and includes checks on surveys, collar co-ordinates, lithology data, and assay data. Data that were collected prior to the introduction of digital logging have been subject to validation, using built-in program triggers that automatically checked data upon upload to the database.
Database security and integrity are accomplished by restricting access and user level permissions that are set by the database managers. Once data entry and validation are completed for a drill hole, access is locked. There are procedures for updates that retain all the original information and prioritize use of the updates.
Digital back-up copies of the geologic logs are stored offsite. The majority of the hardcopy logs that were used prior to digital databases are archived. Some of the drill hole records have been digitally scanned and saved.
8.9    Qualified Person’s Opinion on Sample Preparation, Security, and Analytical Procedures
The sample preparation, analysis, quality control, and security procedures used by the Nevada Operations have changed over time to meet evolving industry practices. Practices at the time the information was collected were industry-standard, and frequently were industry-leading practices. The data are acceptable for use in mineral resource and mineral reserve estimates and in mine planning.
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9.0    DATA VERIFICATION
9.1    Internal Data Verification
Validation checks are performed by NGM operations personnel on data used to support estimation comprise checks on surveys, collar coordinates, lithology data (cross-checking from photographs), and assay data. Errors noted are rectified in the database prior to data being flagged as approved for use in resource estimation.
9.2    Reviews and Audits
Newmont conducted internal audits, termed Reserve and Resource Review or 3R audits, of all its operations prior to the incorporation of the NGM JV. These audits focused on:
Reserves processes: geology and data collection; resource modelling; geotechnical; mine engineering (long term) for open pit and underground operations; mineral processing (development); sustainability and external relations; financial model;
Operations process: ore control; geotechnical and hydrogeology (operational); mine engineering (operational) for open pit and underground operations; mineral processing (operational); reconciliation.
The reviews assessed these areas in terms of risks to the contained metal content of the mineral resource and mineral reserve estimates, or opportunities to add to the estimated contained metal content. Findings were by definition areas of incorrect or inappropriate application of methodology or areas of non-compliance to the relevant internal Newmont standard (e.g., such as documents setting out the standards that are expected for aspects of technical services, environmental, sustainability and governmental relations) or areas which are materially inconsistent with published Newmont guidelines (e.g., such as guidelines setting out the protocols and expectations for mineral resource and mineral reserve estimation and classification, mine engineering, geotechnical, mineral processing, and social and sustainability). The operation under review was expected to address findings based on the level of criticality assigned to each finding.
The most recent 3R audits on the former Newmont properties were conducted as follows:
2013: Emigrant, Phoenix, and Long Canyon;
2014: Leeville;
2015: Phoenix;
2016: Carlin, Twin Creeks;
2018: Carlin, Phoenix.
9.3    Subject Matter Expert Reviews
The QP requested that information, conclusions, and recommendations presented in the body of this Report be reviewed by Newmont experts or Newmont staff in each discipline area as a further level of data verification.
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Reviewers were requested to cross-check, as applicable, numerical data, flag any data omissions or errors identified, review the manner in which the data were summarized and reported in the technical report summary, and check the interpretations arising from the data as presented in the Report. Reviewers were also asked to check that the QP’s opinions stated as required in certain Report chapters were supported by the data.
Feedback from the reviewers was incorporated into the Report as required.
9.4    External Data Verification
A number of third-party consultants have performed external data reviews, as summarized in Table 9-1.
These external reviews were undertaken in support of acquisitions, support of feasibility-level studies, and in support of technical reports, producing independent assessments of the database quality. No significant problems with the database, sampling protocols, flowsheets, check analysis program, or data storage were noted.
9.5    Data Verification by Qualified Person
Mr. Doe performed site visits as outlined in Chapter 2.4. Observations made during the visits, in conjunction with discussions with site-based technical staff also support the geological interpretations, and analytical and database quality. The QP’s personal inspection supports the use of the data in mineral resource and mineral reserve estimation, and in mine planning.
Mr. Doe has a long history of involvement with mining operations in Nevada, beginning in 1994. This consisted of site-based and corporate roles, including his current position as Group Executive Reserves.
In October 2021, Mr. Doe supervised a site-based review of the geological and geostatistical information supporting the mineral resources and mineral reserves as part of Newmont’s 3R process. The review indicated that the estimates were performed used industry-standard practices.
A subsequent in-person review by the QP and mining, metallurgical, geotechnical and tailings engineers, and environmental experts was planned for November 2021. However, due to Covid-19 protocols, this review was performed remotely. The review indicated that there may be some risk to the permitting timelines for tailings expansion at the Turquoise Ridge Complex.
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Table 9-1:    External Data Reviews
ConsultantYearComment
Second Door Industries2000Review of Turquoise Ridge Underground database
AGRA Simons2000Review of Phoenix databases
J.M. Rendu2002–2003Review of Gold Quarry databases
AMEC Americas Ltd2004–2005Review of Cortez Hills databases
Ed Isaaks2005Review of Phoenix databases
AMEC Americas Ltd2006–2007Review of Phoenix databases
AMEC Americas Ltd2009Review of Leeville databases
Mine Development Associates2009Data review of Long Canyon database in support of NI 43-101 Technical Report
Roscoe Postle Associates2011Review of Leeville databases
2012Review of Cortez databases and mineral resource/mineral reserve estimates
Roscoe Postle Associates2015Review of Cortez databases
2018Data review of Cortez operations in support of NI 43-101 Technical Report
Mine Technical Services2018Review of Goldstrike databases
Review of Cortez databases
Golder Associates2018Review of Goldstrike databases
Wood plc2019Review of estimation, geologic modelling and exploratory data analysis methods at Cortez
AB Global Mining2020Review of Cortez Hills underground, Crossroads, Cortez Pits and Robertson Mineral Resource models
Roscoe Postle Associates2020Mineral Reserve and Mineral Resource audit of the Goldstrike mine
SRK Consulting2021Quantified comparison and adequacy of NGM’s digital database against original source data
9.6    Qualified Person’s Opinion on Data Adequacy
The process of data verification for the Project has been performed by external consultancies and NGM personnel. The QP considers that a reasonable level of verification has been completed, and that no material issues would have been left unidentified from the programs undertaken.
The QP, who relies upon this work, has reviewed the reports and is of the opinion that the data verification programs completed on the data collected from the Project are consistent with industry best practices and that the database is sufficiently error-free to support the geological interpretations and mineral resource and mineral reserve estimation, and mine planning.
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10.0    MINERAL PROCESSING AND METALLURGICAL TESTING
10.1    Test Laboratories
During the 60+ year history of Nevada Operations mine development, a significant number of metallurgical studies and accompanying laboratory-scale and/or pilot plant tests have been completed. Either internal metallurgical research facilities or external consultants undertake the research. Recent external testwork was performed at McClelland Laboratories, Hazen Research, Macpherson Laboratories, McGill University, Svedala, and Outukumpu. Internal testwork facilities included the Goldstrike Metallurgical Laboratory, Gold Quarry Metallurgical Laboratory, Newmont Metallurgical Services in Englewood, Colorado and the AuTec Metallurgical Laboratory located in Vancouver, British Columbia, Canada,
The laboratories perform metallurgical testing using industry-accepted procedures and to industry-accepted standards. There is no international standard of accreditation provided for metallurgical testing laboratories or metallurgical testing techniques.
10.2    Metallurgical Testwork
Metallurgical testwork included: mineralogy; head grades and screen analyses; bottle roll, bench and column cyanide leaching; carbon adsorption/activation tests; direct cyanide leach testwork; carbon-in-leach tests; agglomeration tests; cyanide amenability tests; bench or circulating fluidized bed roasting tests; calcine tests; magnetic separation testwork; bench-top roaster followed by CIL testwork; bench-top alkaline pressure leach tests followed by CIL tests; calcium thiosulfate and resin leach tests; bench-top alkaline pressure leach tests followed by thiosulfate resin in leach testwork; sulfidization acidification re-neutralization and thickening or SART testwork; reagent consumption reviews; impurity reviews; standard autoclaving and leach tests; grindability (comminution) tests (SMC, breakage parameter, Bond work index, drop weight index, rod work index, unconfined compressive strength, semi-autogenous grind (SAG) power index); thickener testwork; batch and pilot plant tests
These test programs were sufficient to establish the optimal processing routes for the non-refractory and refractory ores, and the weathering state of the ores (oxide, leached, enriched, transition, sulfide), and was performed on mineralization that was typical of the deposits. The results obtained supported estimation of recovery factors for the various ore types depending on the process method selected.
Numerous processing methods are used within the Nevada Operations, including CIL for higher-grade oxide ore, heap leaching for lower-grade oxide ore, roasting for carbonaceous refractory ore, and pressure oxidation (POX) for higher-grade sulfidic ore.
Future ore testing is completed according to the needs of the optimized blend planning for the combined NGM operations. A sampling matrix of ore types and grade/chemistry ranges is developed. The sampling matrix is used to perform an extraction on the resource model to determine tons in each matrix category. Core logs are used to build variability composites for each matrix category targeting a minimum of the one variability composite for every 1.5 Mt. All variability composites are laboratory-tested, and include: column testwork, roast and bottle roll leach testwork, and flotation and bottle roll leach testwork as applicable. Master composites are
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generated from the variability composites to identify any negative or positive synergies that could result from mixing ore types.
Current ore testing is completed monthly by performing testwork on feed stockpile samples. The stockpile samples are taken weekly and composited at the end of the month for column testwork, roast and bottle roll leach testwork, and flotation and bottle roll leach testwork as applicable. The stockpile metallurgical testwork is completed individually so that recovery results can be compared to budget/reserve recoveries and adjusted as needed.
10.3    Recovery Estimates
Gold recovery is a function of the processing method (e.g., heap leaching, CIL, roasting, and arsenic concentration for refractory ore) and the lithology of the mineralization being processed. As applicable, recovery estimates include consideration of the head grade, cyanide-soluble gold to fire assay gold ratio, sulfide sulfur concentration, total organic carbon concentration, and silica concentration.
Copper recovery models were derived from a statistical review of the metallurgical data and range in complexity from simple, fixed recoveries to complex, multi-variable equations. The following input variables were available as possible drivers of recovery: head grade, copper leach ore type, alteration type, formation, and various trace elements.
Recovery ranges projected for the LOM operations include:
Gold:
Oxide leach: 57–75%;
Oxide mill: 73–88%;
Goldstrike roaster: 84–92%;
Goldstrike autoclave: 50–96%;
Gold Quarry roaster: 84–92%;
Sage (Turquoise Ridge) autoclave: average 84%;
Phoenix mill: average 70%;
Copper:
Phoenix mill: average 71%;
Copper leach: average 49%;
Silver:
Phoenix mill: average 38%.
10.4    Metallurgical Variability
Samples selected for metallurgical testing during feasibility and development studies were representative of the various styles of mineralization within the different deposits. Samples were selected from a range of locations within the deposits. Sufficient samples were taken, and tests were performed using sufficient sample mass for the respective tests undertaken.
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Variability assessments are supported by production and extensive open pit and underground exposures.
10.5    Deleterious Elements
Depending upon the specific processing facility, several processing factors or deleterious elements could have an economic impact on extraction efficiency of a certain ore source, based either on the presence, absence, or concentration of the following constituents in the processing stream:
Organic carbon;
Sulfide sulfur;
Carbonate carbon;
Arsenic
Mercury;
Antimony;
Copper.
However, under normal ore routing and blending practices at NGM where material from several sites may be processed at one facility, the above list of constituents is typically not a concern.
10.6    Qualified Person’s Opinion on Data Adequacy
Industry-standard studies were performed as part of process development and facility designs. Subsequent production experience and focused investigations guided facility alterations and process changes where required.
Testwork programs, both internal and external, continue to be performed to support current operations and potential improvements. From time to time, this may lead to requirements to adjust cut-off grades, modify the process flowsheet, or change reagent additions and process parameters to meet production, and economic targets.
Based on these checks, the metallurgical testwork and reconciliation and production data support the estimation of mineral resources and mineral reserves, and the inputs to the economic analysis.
The facilities will produce variations in recovery due to the day-to-day changes in ore type or combinations of ore type being processed. These variations are expected to trend to the forecast recovery value for monthly or longer reporting periods.
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11.0    MINERAL RESOURCE ESTIMATES
11.1    Introduction
Mineral resources were estimated for the deposits listed in Table 2-1. The close-out date for the databases used in the various mineral resource estimates depend on the deposit. Geology models were generally constructed by Nevada Operations personnel.
Estimation was typically performed by Nevada Operations personnel. All mineralogical, drilling, and background data and information were provided to the estimators by the geological staff at the operations or by exploration staff. Depending on the deposit, models were developed as follows:
Vulcan: surface wireframes were constructed representing interpreted structure (faults) and stratigraphy units. Stratigraphic logging was the primary driver for the geological modelling; however, geological mapping, structural logging, and gold and sulfur assay data were also used to guide the interpretation;
Leapfrog: major faults, stratigraphy units, weathering surfaces and mineralized grade shells were interpreted;
Block sizes were based on the drill hole spacing, deposit geometry, and the potential mining method. Parent block sizes for assumed open pit operations included: 30 x 30 x 20 ft, 40 x 40 x 20 ft, 50 x 50 x 20 ft; with sub-cells, where necessary, at, 11.5 x 11.5 x 11.5 ft. Underground parent block sizes included 10 x 10 x 2 ft, 10 x 10 x 10 ft, 20 x 20 x 20 ft, 30 x 30 x 20 ft, 30 x 30 x 50 ft; with sub-cells, where necessary, at 2.5 x 2.5 x 2 ft and 5 x 5 x 2 ft.
11.2    Exploratory Data Analysis
Exploratory data analytical methods varied by complex. Typically, data analysis was completed on raw and composited data to determine statistics for sample populations within domains, and the mean, maximum, minimum values, standard deviation and coefficients of variance were tabulated. Exploratory data analysis could be used to determine estimation domains, evaluate composite lengths, identify any grade outliers and to select optimum top cut values for each of the domains and to determine estimation parameters. The analysis tools applied could include for capping and estimation parameter investigation: histogram plots, log probability plots, mean and co-efficient of variation (CV) curves to look for the stability point, top 5% metal impact, indicator correlation, declustered mean plus two and three standard deviations, risk-hi analysis, contact analysis, visual checking and metal impact.
11.3    Geological Models
Geologic modeling included lithologies, structures, alteration and mineralization in order to build a 3D interpretation of the important features controlling the orebodies. These interpretations used all available information as a basis, including drill assays and logs, geochemical relationships, mapping, and current understanding of mineralization genesis in the region. Within the interpreted geologic framework, estimation domains were developed through collaboration between the project geologists and modelers.
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11.4    Density Assignment
Density values were typically assigned based on lithology; alternatively, a tonnage factor could be applied to material designated as either ore or waste. Where sufficient local data were available, density was estimated using similar data analysis, estimation, and validation methods as for other estimated elements.
11.5    Grade Capping/Outlier Restrictions
Grade caps were applied based on the results of the exploratory data analysis. High-grade anomalous values were controlled through the use of top-cutting and/or high-grade estimation restrictions, applied by deposit and domain. Where multiple indicator kriging (MIK) or similar estimation methods were used, the high-grade portion of the distribution was evaluated and validated accordingly.
11.6    Composites
Composite lengths varied by complex and project, based on block sizes, sample lengths, and estimation workflow, including:
Open pit: 10 ft, 11.5 ft, 20 ft;
Underground: 2.5 ft, 5 ft, 10 ft, 11.5 ft.
11.7    Variography
Variographic analyses were completed by domain, using Snowden Supervisor, Vulcan, or Sage software, or GSLib/CCG programs, to determine a3D model of spatial continuity. Variogram or correlogram models were fitted to experimental variograms where sufficient data existed within the domain. Search ellipses for use in the various estimation passes were scaled according to the relative axis dimensions and orientations for each estimation domain. Visual checks of the search ellipses against the underlying geologic model and interpreted mineralization controls to ensure consistency were done using Vulcan in 3D.
11.8    Estimation/interpolation Methods
Estimation and interpolation methods varied by deposit, domain, and estimation element. The following methods were used: ordinary kriging (OK), MIK, localized indicator kriging (LIK), inverse distance weighting to the second power (ID2), inverse distance weighting to the third power (ID3), and inverse distance weighting to the fifth power (ID5). Typically, alternate grade interpolations (including nearest neighbor) were performed for use in model validation and sensitivity testing.
Depending on the deposit, interpolation was performed in multiple (usually 2–3, but as many as eight) passes. Search neighborhoods were based on variography, mineralization geometry, or on selected drill spacings. Minimum and maximum numbers of informing samples varied by deposit, as did the number of samples allowed to be used from a single drill hole:
Minimum number of informing samples: 1–5;
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Maximum number of informing samples: 5–24;
Maximum number of informing samples from a single drill hole: 2–3.
Dynamic anisotropy and unfolding applications could be used to improve alignment of the local sample search ellipse with changes in the strike, dip, and plunge orientation of the mineralization.
Block models were flagged for mining depletion. A depleted version was completed with blocks within previously-mined areas depleted for grades and densities. Where areas were back-filled, these blocks were coded by fill type and their density reset to reflect the fill type.
11.9    Validation
Mineralization solids were checked for conformity to drill hole data, continuity, similarity between sections, overlaps, appropriate terminations between holes and into undrilled areas.
Validation procedures were undertaken on the estimations. These could include comparison of global mean grades, visual comparisons to composite grades, comparisons to reconciliation (when available), change of support corrections estimated using a discrete Gaussian model under a diffusion model assumption, grade-tonnage curves, slope of regression calculations, comparison to NN analysis and swath plots.
No significant biases were noted from the checks.
11.10    Confidence Classification of Mineral Resource Estimate
Blocks were classified in the model, based on relative confidence in the estimated grades, into measured, indicated, and inferred. Criteria for classification were defined within each deposit, and based on various combinations of:
Proximity to nearby drilling data (distances to nearest 1, 2, or 3 drill holes);
Geostatistical drill spacing studies;
Qualitative assessment of confidence in the underlying geologic interpretations;
Historical classification assignments;
Classification smoothing algorithms.
Local zones could be manually reclassified, using solids where required, due to lower confidence in the interpretation or estimate.
11.11    Reasonable Prospects of Economic Extraction
For each resource estimate, an initial assessment was undertaken that assessed likely infrastructure, mining, and process plant requirements; mining methods; process recoveries and throughputs; environmental, permitting and social considerations relating to the proposed mining and processing methods, and proposed waste disposal, and technical and economic considerations in support of an assessment of reasonable prospects of economic extraction.
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11.11.1    Input Assumptions
Mineralization considered potentially amenable to open pit mining methods was constrained within a conceptual pit shell using the Lerchs–Grossmann (LG) algorithm within Vulcan software.
Mineralization considered potentially amenable to open pit mining methods was constrained within mineable shapes generated using Mineable Stope Optimizer (MSO) software.
Key parameters used to constrain the resource estimates are summarized in Table 11-1 (open pits) and Table 11-2 (underground). Tonnages in the tables are metric tonnes.
11.11.2    Commodity Price
Commodity prices used in resource estimation are based on long-term analyst and bank forecasts. An explanation of the derivation of the commodity prices is provided in Chapter 16.2. The estimated timeframe used for the price forecasts is the 24-year LOM that supports the mineral reserve estimates.
11.11.3    Cut-off
The resources are reported at varying cut-off values, which are based on the material type being mined, the mining method and the designated process facility. As a result, cut-off values can vary significantly by material type.
11.11.4    QP Statement
The QP is of the opinion that any issues that arise in relation to relevant technical and economic factors likely to influence the prospect of economic extraction can be resolved with further work. The mineral resource estimates are performed for deposits that are in a well-documented geological setting; the district has seen 55+ years of active open pit operations and 25+ years of underground mining operations conducted by Newmont, Barrick and NGM; Newmont is familiar with the economic parameters required for successful operations in the Nevada Operations area; and Newmont, Barrick and NGM have a history of being able to obtain and maintain permits, social license and meet environmental standards in Nevada. The 24-year timeframe is considered sufficient to address any issues that may arise with the mineral resource estimates.
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Table 11-1:    Open Pit Input Parameters (mineral resources)
Economic ParametersUnits
Carlin Complex
Cortez Complex
Long Canyon Complex
Phoenix Complex
Turquoise Ridge Complex
Minimum
Maximum
Minimum
Maximum
Minimum
Maximum
Minimum
Maximum
Minimum
Maximum
Gold priceUS$/oz1,5001,5001,5001,5001,5001,5001,5001,5001,5001,500
Royalties%0160.7311000.740.7411
Discount rate%0.285555555Varies, maximum of 5
Mining costUS$/t2.082.081.802.423.803.802.632.812.512.57
G&A costUS$/t0.230.230.192.840.280.280.820.820.270.28
Process costUS$/t2.3540.872.449.773.793.798.058.055.7835.12
% (average)52676288758266675781
Pit slope anglesdegrees11472551505225523650
Cut-off gradesg/t Au0.211.100.1711.470.2020.202NANA0.173.29
Note: NA = not applicable. Phoenix is reported using a net smelter return cut-off. Tonnages are metric tonnes.
Table 11-2:    Underground Input Parameters (mineral resources)
Economic Parameters
Units
Carlin Complex
Cortez Complex
Long Canyon
Turquoise Ridge Complex
Minimum
Maximum
Minimum
Maximum
Minimum
Maximum
Minimum
Maximum
Gold priceUS$/oz1,5001,5001,5001,5001,2001,2001,5001,500
Royalties%0.56613NANA11
Discount rate%Variable, maximum of 555NANANANA
Mining costUS$/t61.30145.6331.9797.15122.14122.14134.75213.89
G&A costUS$/t9.4415.6710.7915.1915.7515.7517.4517.45
Process costUS$/t18.3126.2010.6229.455.3155.3134.9134.91
% (average)7985848983928690
Cut-off gradesg/t Au2.745.732.713.417.377.373.36
Note: NA = not applicable. Tonnages are metric tonnes.
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11.12    Mineral Resource Statement
Mineral resources are reported using the mineral resource definitions set out in SK1300. The point of reference for the estimate is the point of delivery to the process facilities. Mineral resources are reported exclusive of those mineral resources converted to mineral reserves. Mineral resources are reported on a 100% basis. Barrick owns a 61.5% JV interest, with Newmont owning the remaining 38.5% JV interest.
The mineral resource estimates for the Nevada Operations are provided as follows:
Gold: Table 11-3 (measured and indicated) and Table 11-4 (inferred);
Silver: Table 11-5 (measured and indicated) and Table 11-6 (inferred);
Copper: Table 11-7 (measured and indicated) and Table 11-8 (inferred).
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Table 11-3:    Measured and Indicated Mineral Resource Statement (Gold)
DepositsTypeMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
CarlinOpen pit18,8002.661,610131,5001.496,320150,4001.647,930
Underground18,2005.673,3208,5005.351,46026,7005.574,780
Stockpiles8,4001.022808,4001.02280
Carlin Sub-total45,4003.565,210140,1001.737,780185,5002.1812,980
CortezOpen pit01.64089,3000.681,94089,4000.681,940
Underground7007.1717010,2005.841,91010,9005.932,070
Cortez Sub-total7007.0217099,5001.203,850100,3001.254,010
Long CanyonOpen pit5003.47608,0002.566608,6002.62720
Underground1,80010.686201,80010.68620
Long Canyon Sub-total5003.47609,8004.051,28010,4004.021,340
Turquoise RidgeOpen pit8003.138023,2002.051,54024,0002.091,610
Underground3,2006.8471010,5006.932,33013,7006.913,040
Stockpiles11,4002.0474011,4002.04740
Turquoise Ridge Sub-total15,3003.101,53033,7003.573,87049,1003.425,400
PhoenixOpen pit7,6000.53130218,2000.453,140225,8000.453,270
Phoenix Sub-total7,6000.53130218,2000.453,140225,8000.453,270
Grand Total69,6003.177,090501,3001.2419,910571,1001.4727,000
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Table 11-4:    Inferred Mineral Resource Statement (Gold)
Deposits 
Area 
Inferred Mineral Resources
Tonnage
(x 1,000 t)
Grade (g/t Au)Cont. Gold
(x 1,000 oz)
CarlinOpen pit89,1001.13,230
Underground16,2007.53,930
Stockpiles5,4002.0350
Carlin Sub-total110,7002.17,510
CortezOpen pit100,1000.51,760
Underground24,3005.94,620
Cortez Sub-total124,4001.66,380
Long CanyonOpen pit1,7000.850
Underground9009.1250
Long Canyon Sub-total2,6003.6300
Turquoise RidgeOpen pit17,1001.8980
Underground1,1006.2220
Turquoise Ridge Sub-total18,2002.01,200
PhoenixOpen pit41,4000.3430
Stockpiles7,8000.6160
Phoenix Sub-total49,2000.4580
NGM TotalGrand Total305,0001.615,970
Table 11-5:    Measured and Indicated Mineral Resource Statement (Silver)
DepositsTypeMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated
Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
PhoenixOpen pit7,6005.5721,360218,2005.53938,860225,8005.54040,220
Stockpiles
Phoenix sub-total7,6005.5721,360218,2005.53938,860225,8005.54040,220
NGM TotalGrand Total7,6005.5721,360218,2005.53938,860225,8005.54040,220
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Table 11-6:    Inferred Mineral Resource Statement (Silver)
Deposits 
Area 
Inferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
PhoenixOpen pit41,4005.47,240
Stockpiles7,8006.41,600
Phoenix sub-total49,2005.68,840
NGM TotalGrand Total49,2005.68,840
Table 11-7:    Measured and Indicated Mineral Resource Statement (Copper)
DepositsAreaMeasured Mineral ResourcesIndicated Mineral ResourcesMeasured and Indicated Mineral Resources
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
PhoenixOpen pit8,0000.1420289,6000.14880297,6000.14910
Phoenix sub-total8,0000.1420289,6000.14880297,6000.14910
NGM TotalGrand Total8,0000.1420289,6000.14880297,6000.14910
Table 11-8:    Inferred Mineral Resource Statement (Copper)
DepositsAreaInferred Mineral Resources
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
PhoenixOpen pit43,3000.1140
Stockpiles8,3000.110
Phoenix sub-total51,6000.1150
NGM TotalGrand Total51,6000.1150
Notes to Accompany Mineral Resource Tables:
1.Mineral resources are current as at December 31, 2021, using the definitions in SK1300. The Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
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2.The reference point for the mineral resources is in situ.
3.Mineral resources are reported on a 100% basis. Barrick owns a 61.5% JV interest, with Newmont owning the remaining 38.5% JV interest.
4.Mineral resources are reported exclusive of mineral reserves. Mineral resources that are not mineral reserves do not have demonstrated economic viability.
5.Mineral Resources that are potentially amenable to open pit mining methods are constrained within a designed pit shell. Mineral Resources that are potentially amenable to underground mining methods are constrained within conceptual stope designs. Parameters used are summarized in Table 11-1 and Table 11-2.
6.Tonnages are metric tonnes rounded to the nearest 100,000. Gold and silver grades are rounded to the nearest 0.01 gold grams per tonne. Copper grade is in %. Gold and silver ounces and copper pounds are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold and silver ounces are reported as troy ounces, rounded to the nearest 10,000. Copper is reported as pounds and rounded to the nearest 10 million pounds. Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”). Totals may not sum due to rounding.
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11.13    Uncertainties (Factors) That May Affect the Mineral Resource Estimate
Areas of uncertainty that may materially impact all of the mineral resource estimates include:
Changes to long-term metal price and exchange rate assumptions;
Changes in local interpretations of mineralization geometry such as pinch and swell morphology, extent of brecciation, presence of unrecognized mineralization off-shoots; faults, dykes and other structures; and continuity of mineralized zones;
Changes to geological and grade shape, and geological and grade continuity assumptions;
Changes to variographical interpretations and search ellipse ranges that were interpreted based on limited drill data, when closer-spaced drilling becomes available;
Changes to metallurgical recovery assumptions;
Changes to the input assumptions used to derive the potentially-mineable shapes applicable to the assumed underground and open pit mining methods used to constrain the estimates;
Changes to the forecast dilution and mining recovery assumptions;
Changes to the cut-off values applied to the estimates;
Variations in geotechnical (including seismicity), hydrogeological and mining method assumptions;
Changes to environmental, permitting and social license assumptions.
Specific factors that may affect individual estimates include:
Cortez Complex: Mineralization at the Robertson deposit is genetically different to the mineralization currently mined within the Cortez Complex. Additional metallurgical testwork is planned, and results from this work may impact options for processing the mineralization and subsequent recovery expectations;
Long Canyon Complex: the mineral resource estimate includes an assumption of underground mining for a portion of the estimate. Underground mining operations are new to the Long Canyon Complex;
Phoenix Complex: optimization is based on the combined value of recovered gold, silver and copper. Changes to the price of one or more commodities may impact the optimization.
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12.0    MINERAL RESERVE ESTIMATES
12.1    Introduction
Measured and indicated mineral resources were converted to mineral reserves. Mineral reserves in the Nevada Operations area are estimated for the Carlin, Cortez, Long Canyon, Phoenix and Turquoise Ridge complexes using open pit mining, and the Carlin, Cortez, and Turquoise Ridge complexes using underground mining. Stockpiled material is also included in the mineral reserve estimates. All Inferred blocks are classified as waste in the cashflow analysis that supports mineral reserve estimation.
Mineral Reserves are supported by a mine plan, an engineering analysis, and the application of modifying factors. These inputs are supported by operational experience.
12.2    Open Pit Estimates
The optimized economic pit shells selected for the basis of open pit designs were created using the Whittle 4X software package. Optimization work involved floating cones at a series of gold prices. The generated nested pit shells were evaluated using the reserve gold price of US$1,200/oz (and at Phoenix a copper price of $2.75/lb and silver price of $16.50/oz) and a 5% discount rate. The pit shells with the highest NPV were selected for detailed engineering design work.
A realistic schedule was developed in order to determine the optimal pit shell for each deposit; schedule inputs include the minimum mining width, and vertical rate of advance, mining rate and mining sequence.
Operating costs for mining, processing, and general and administrative were developed as part of the mine business planning process. The costs build-up is based on actual values, as well as inclusion of a number of projected cost-saving measures and efficiency gains. Costs are un-escalated.
Costs were based on the following key inputs:
The equipment fleet required through to the end of mine life;
Process costs for each pit and material type, derived from actual costs and forecast ore feed blends;
Reclamation and closure cost provisions sourced from site environmental calculations.
Dilution and extraction for the open pits are addressed by using whole blocks, without any further external factors. The block models were constructed to include the expected dilution based on mining methods, bench height and other factors. The current mine and process reconciliation data appear to support this assumption.
Input parameters used are summarized in Table 12-1.
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Table 12-1:    Input Parameters, Open Pit (mineral reserves)
Economic Parameters
Units
Carlin Complex
Cortez Complex
Long Canyon Complex
Phoenix Complex
Turquoise Ridge Complex
Minimum
Maximum
Minimum
Maximum
Minimum
Maximum
Minimum
Maximum
Minimum
Maximum
Gold priceUS$/oz1,2001,2001,2001,2001,2001,2001,2001,2001,2001,200
Royalties%0.5616111000.740.7411
Discount rate%0.2851010NANANANANANA
Mining costUS$/t2.082.081.802.423.803.802.632.831.641.65
G&A costUS$/t0.230.230.192.840.280.280.461.170.642.94
Process costUS$/t2.3540.872.449.773.793.791.908.876.7425.44
% (average)54666288757569735781
Pit slope anglesº11472551455025523650
Cut-off gradesg/t Au0.210.990.142.060.240.24NANA0.173.09
Note: NA = not applicable. Phoenix is reported using a net smelter return cut-off. Tonnages are metric tonnes.
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12.3    Underground Estimates
Underground mines are designed using zones that are amenable to different mining methods based on geotechnical and access considerations, the deposit shape, orientation and grade, and mining depths.
The mine plans assume use of a number of different mining methods and variants including:
Long-hole stoping;
Long-hole stope retreat
Underhand drift-and-fill;
Overhand drift-and-fill.
Stopes were created using MSO software at the required stope height, length and cut-off criteria based on the mine area. The stope widths depend on the stope cut-off and dilution (over-break) added to stope design, and the mining method used. A set of marginal stopes could also be considered in the reserve process. These stopes were assessed for reserve reporting based on an individual economic assessment. Typically, these stopes were adjacent to higher-grade stopes and thus required minimal waste development and infrastructure.
Blocks that were modelled as waste or low-grade were included in a designed stope shape as internal dilution. Additional tonnage dilution percentages could be added by site personnel, where required, based on historical reconciliation data for a particular mining method. Dilution accommodations (tonnage at no grade) can be made to account for ore handling and cemented rock fill dilution.
Mineral reserves include adjustments for ore losses and dilution.
Input parameters used are summarized in Table 12-2.
12.4    Cut-offs
Cut-off grades are determined based on a combination of the selected metal price, applicable royalty payments, mining costs, process operating costs, and on-site (and off-site) metal recoveries by material type, selected process method, and mining method. Operational cut-off grades ranged from:
Carlin Complex: 0.20–7.06 g/t Au;
Cortez Complex: 0.14–3.41 g/t Au;
Long Canyon: 0.24 g/t Au;
Turquoise Ridge Complex: 0.17–7.99 g/t Au.
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Table 12-2:    Input Parameters, Underground (mineral reserves)
Economic Parameters
Units
Carlin Complex
Cortez Complex
Turquoise Ridge Complex
Minimum
Maximum
Minimum
Maximum
Minimum
Maximum
Gold priceUS$/oz1,2001,2001,2001,2001,2001,200
Royalties%0.5661311
Discount rate%5NANANANA
Mining costUS$/t61.30145.6376.1697.15132.30213.72
G&A costUS$/t9.4415.6710.7915.195.6517.45
Process costUS$/t18.3126.2010.6229.4034.4334.91
% (average)828984898690
Cut-off gradesg/t Au3.437.063.395.213.947.99
Note: Tonnages are metric tonnes.
Revenue from the Phoenix Complex is generated from three products: gold, silver, and copper. A revenue cut-off, rather than a grade cut-off, is used that integrates the economics (recovery, metal prices, and costs) of all three metals. The revenue calculation only includes incremental mining costs beyond the pit rim. The mineral reserves for the Phoenix Complex are reported using a zero-dollar net revenue cut-off.
12.5    Stockpiles
Stockpile estimates were based on mine dispatch data; the grade comes from closely-spaced blasthole sampling and tonnage sourced from truck factors. The stockpile volumes were typically updated based on monthly surveys. The average grade of the stockpiles was adjusted based on the material balance to and from the stockpile.
12.6    Commodity Prices
Commodity prices used in mineral reserve estimation are based on long-term analyst and bank forecasts. An explanation of the derivation of the commodity prices is provided in Chapter 16.2. The estimated timeframe used for the price forecasts is the 24-year LOM.
12.7    Mineral Reserve Statement
Mineral reserves have been classified using the mineral reserve definitions set out in SK1300. Mineral reserves are current as at December 31, 2021. The reference point for the mineral reserve estimate is as delivered to the process facilities. Mineral reserves are reported on a 100% basis. Barrick owns a 61.5% JV interest, with Newmont owning the remaining 38.5% JV interest.
Mineral reserves are reported in Table 12-3 for gold, Table 12-4 for silver, and in Table 12-5 for copper. Tonnages in the table are metric tonnes.
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12.8    Uncertainties (Factors) That May Affect the Mineral Reserve Estimate
Areas of uncertainty that may materially impact all of the mineral reserve estimates include:
Changes to long-term metal price and exchange rate assumptions;
Changes to metallurgical recovery assumptions;
Changes to the input assumptions used to derive the mineable shapes applicable to the assumed underground and open pit mining methods used to constrain the estimates;
Changes to the forecast dilution and mining recovery assumptions;
Changes to the cut-off values applied to the estimates;
Variations in geotechnical (including seismicity), hydrogeological and mining method assumptions;
Changes to environmental, permitting and social license assumptions.
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Table 12-3:    Proven and Probable Mineral Reserve Statement (Gold)
Deposits 
Area 
Proven Mineral ReservesProbable Mineral ReservesProven and Probable Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Au)
Cont. Gold
(x 1,000 oz)
CarlinOpen pit15,1002.581,25079,8001.965,04094,9002.066,290
Underground19,7009.255,86011,4008.182,99031,1008.868,850
Stockpiles3,5002.5829038,7002.623,25042,1002.613,540
Carlin sub-total38,3006.017,400129,8002.7011,280168,1003.4618,670
Cortez 
Open pit2001.901060,7001.663,24061,0001.663,250
Underground1,3008.5735042,2007.7710,54043,5007.7910,890
Stockpiles2,1002.151402,1002.15140
Cortez Subtotal3,5004.43500103,0004.1613,780106,5004.1714,290
Long CanyonOpen pit3001.43206001.06201,0001.1840
Long Canyon sub-total3001.43206001.06201,0001.1840
Turquoise RidgeOpen pit1,2002.188013,5001.9082014,6001.92900
Underground14,30011.055,06019,2009.896,09033,40010.3911,160
Stockpiles27,5002.131,880 27,5002.131,880
Turquoise Ridge sub-total42,9005.097,03032,6006.596,92075,6005.7413,940
Phoenix 
Open pit9,1000.65190155,8000.592,960164,9000.593,150
Stockpiles4,3000.881204,3000.88120
Phoenix sub-total13,5000.72310155,8000.592,960169,3000.603,270
NGM TotalGrand Total98,5004.8215,260421,8002.5834,960520,3003.0050,220
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Table 12-4:    Proven and Probable Mineral Reserve Statement (Silver)
Deposits 
Area 
Proven Mineral ReservesProbable Mineral ReservesProven and Probable Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
Tonnage
(x 1,000 t)
Grade
(g/t Ag)
Cont. Silver
(x 1,000 oz)
PhoenixOpen pit9,1006.4751,900155,8006.35131,810164,9006.35733,710
Stockpile4,3009.3451,3004,3009.3451,300
Phoenix sub-total13,5007.3973,200155,8006.35131,810169,3006.43435,010
NGM TotalGrand Total13,5007.3973,200155,8006.35131,810169,3006.43435,010
Table 12-5:    Proven and Probable Mineral Reserve Statement (Copper)
DepositsAreaProven Mineral ReservesProbable Mineral ReservesProven and Probable
Mineral Reserves
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Tonnage
(x 1,000 t)
Grade
(Cu %)
Cont. Copper
(M lbs)
Phoenix 
Open pit9,6000.1630208,3000.17770217,9000.17800
Stockpiles8,2000.17308,2000.1730
Phoenix sub-total17,8000.1770208,3000.17770226,1000.17830
NGM TotalGrand Total17,8000.1770208,3000.17770226,1000.17830
Notes to Accompany Mineral Reserve Tables:
1.Mineral reserves are current as at December 31, 2021. Mineral reserves are reported using the definitions in SK1300. The Qualified Person responsible for the estimate is Mr. Donald Doe, RM SME, Group Executive, Reserves, a Newmont employee.
2.The point of reference for the estimates is the point of delivery to the process facilities.
3.Mineral reserves are reported for Nevada Gold Mines on a 100% basis. Barrick owns a 61.5% joint venture interest, with Newmont owning the remaining 38.5% joint venture interest.
4.Mineral reserves that will be mined using open pit mining methods are constrained within a designed pit shell. Mineral reserves that will be mined by underground mining methods are constrained within conceptual stope designs. Parameters used are summarized in Table 12-1 and Table 12-2.
5.Tonnages are metric tonnes rounded to the nearest 100,000. Gold and silver grades are rounded to the nearest 0.01 gold grams per tonne. Copper grade is in %. Gold and silver ounces and copper pounds are estimates of metal contained in tonnages and do not include allowances for processing losses. Contained (cont.) gold and silver ounces are reported as troy ounces, rounded to the nearest 10,000. Copper is reported as pounds and rounded to the nearest 10 million pounds. Rounding of tonnes and contained metal content as required by reporting guidelines may result in apparent differences between tonnes, grade and contained metal content. Due to rounding, some cells may show a zero (“0”). Totals may not sum due to rounding.
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13.0    MINING METHODS
13.1    Introduction
Open pit mining is conducted using conventional techniques and an Owner-operated conventional truck and shovel fleet. Open pit operations include the following: South Arturo, Goldstrike, Tri-star, Gold Quarry, Cortez, Pipeline, Crossroads, Long Canyon, Phoenix, Vista and Mega.
Underground mining is currently conducted using conventional stoping methods, and conventional mechanized equipment. Underground operations include the following: Leeville, Pete Bajo (Rita-K), Exodus, El Niño, Goldstrike, Cortez Hills, Goldrush (in development), Turquoise Ridge and Vista.
13.2    Geotechnical Considerations
Nevada Operations personnel and external consultants completed geotechnical studies and provided geotechnical recommendations that form the basis for pit designs. Ground control management plans were developed, and are regularly updated.
Designs use defined geotechnical domains together with rock mass quality ratings for the principal lithologies and appropriate design criteria that reflect expected conditions and risk. Geotechnical models are a compilation of information sourced from geotechnical cell mapping, geological mapping, core logging, and supplementary drilling designed to intersect areas of geotechnical interest, material strength, highwall and stope performance, and hydrological data.
13.2.1    Open Pit
Inter-ramp angles vary by deposit and pit wall lithology, as shown in Table 13-1.
The Nevada Operations undertake regular monitoring of pit walls through geotechnical cell mapping, geological structure mapping, groundwater monitoring, bench inspections, slope stability, and slope movement analyses.
13.2.2    Underground
Stope designs included empirical assessments of maximum hydraulic radii and man-entry opening spans to determine maximum lengths, widths, heights and whether the backs or end-walls were to be unsupported or supported. Stope pillars sizes were analyzed to determine the most suitable pillar sizes for the ground conditions and expected mining methods.
All trafficable underground excavations have minimum requirements for ground support installation. The determination of supportable loads is typically based on a dead load analysis which assesses the potential dislodgement height above an excavation as a proportion of the excavation span. For mine drifts the potential dead load failure height is assumed to form an Isosceles wedge with a maximum apex height of ½ of the excavation span.
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Table 13-1:    Open Pit Slope Angles
Complex
Inter-Ramp
Slope Angle
Range
(º)
Carlin11–47
Cortez25–51
Phoenix30–52
Turquoise Ridge36–55
Long Canyon37–52
The embedment capacity of rock bolts beyond the assumed failure surface only contributes to the retention force available. Retention forces are designed to exceed driving forces by at least 50% (i.e., a factor of safety of 1.5). The intersection of two mine drifts and the resultant increased span uses a similar design philosophy. For mine intersections the assumed maximum apex height is 1/3 of the excavation span. The design process follows the guidelines proposed by Pakalnis (2015).
Trafficable opening dimensions are specified in each underground site’s Ground Control Standards. These standards are reviewed and approved annually and describe the minimum ground support requirements for each planned excavation type. Excavations that are designed outside of these standards require engineering of a site-specific design.
Mining methods employed at underground site include either cut-and-fill or long-hole open stoping methods, or a combination of the two. The mining method selection is based on the expected ground conditions from either a rock mass classification block model or by reviewing drill core information. All sites have or a working towards developing site specific stability charts that follow the methodology originally proposed by Mathew et al., (1981).
At certain sites, adjustments to mining methods are in process to reflect updated understanding of rock mass conditions.
13.3    Hydrogeological Considerations
The Nevada Operations have hydrological models constructed for key operational areas, used to predict the rate of dewatering and for well-location planning. The models are regularly updated.
In areas where underground operations are in proximity to open pit mines, the water levels are typically well below the pit bottom due to underground dewatering.
Dewatering of aquifers within limestone units is required for many of the mines. Pumping rates are controlled to dewater these aquifers based on pit-floor advance or level advance. In other mines, faults provide segmentation of water-bearing materials. In those instances, hydrological domains that are separated from existing dewatering systems are depressurized using a combination of pumping wells and drains. Perched water can be encountered near fault zones and dykes.
Dewatering wells are established both within and outside of the pits, and undergo regular inspections.
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13.4    Operations
13.4.1    Open Pit
Ultimate pit designs were developed based on pit optimization analysis. The pit limits incorporate geotechnical and hydrological recommendations into final high walls and are designed to include ramps and access to haulage routes to waste rock storage facilities (WRSFs) and processing facilities. Some deposits include phased pit designs which are used to sequence the mining operation. Phases are designed to optimize the economics of the operation and/or provide access to selected ore for blending purposes.
Haul road effective widths for two-way travel range from 98–141 ft with a maximum grade of 10%. The design width for an operating two-way haul road was typically 150 ft, and the minimum operating width was generally 100 ft. For single-lane haul roads, a minimum road width of 80 ft could be used for the bottom benches of the pit. Bench heights vary from 20–40 ft, and can be 60 ft where triple-benching is employed.
Blast patterns are laid out according to material type using rock type designations. Ore grade and type control is performed by sampling each blast hole unless mining is within a known waste zone. Ore control boundaries are staked and flagged in the field and delivered to a GPS-based system for each loading unit.
The final open pit layouts for the open pit mining operations are provided in Figure 13-1 to Figure 13-4 (Carlin Complex), Figure 13-5 to Figure 13-7 (Cortez Complex), Figure 13-8 (Long Canyon Complex), Figure 13-9 (Phoenix Complex) and Figure 13-10 to Figure 13-11 (Turquoise Ridge Complex).
13.4.2    Underground
Underground mining is mechanized, using large-scale equipment. The most common mining methods are a combination of cut-and-fill mining variants with cemented rock (CRF) or paste backfill, and long-hole stoping with, depending on ground conditions, either cemented or uncemented backfill (Table 13-2).
In the cut-and-fill stopes, headings are usually cycled using conventional drill/blast/muck/support on a round-by-round basis or by using mechanical cutting (road header). Top-cut headings are typically 15 x 15 ft and undercut widths vary from 18–30 ft, depending on ground conditions and ore geometry, generally with 15 ft heights. Mining may be by successive undercuts parallel to and below the top cut, or the undercuts may be driven at an angle to the top-cut. Undercuts are tight filled with CRF after mining has completed. Once filled, mining may take place in adjacent panels or below.
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Figure 13-1:    Final Mine Layout Plan, South Arturo, Carlin Complex
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Note: Figure prepared by NGM, 2021.
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Figure 13-2:    Final Mine Layout Plan, Goldstrike, Carlin Complex
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Note: Figure prepared by NGM, 2021.
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Figure 13-3:    Final Mine Layout Plan, Gold Quarry, Carlin Complex
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Note: Figure prepared by NGM, 2021.
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Figure 13-4:    Final Mine Layout Plan, Tri-Star, Carlin Complex
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Note: Figure prepared by NGM, 2021.
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Figure 13-5:    Final Mine Layout Plan, Cortez Open Pit
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Note: Figure prepared by NGM, 2021.
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Figure 13-6:    Final Mine Layout Plan, Pipeline
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Note: Figure prepared by NGM, 2021.
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Figure 13-7:    Final Mine Layout Plan, Crossroads
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Note: Figure prepared by NGM, 2021.
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Figure 13-8:    Final Mine Layout Plan, Long Canyon, Long Canyon Complex
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Note: Figure prepared by NGM, 2022.
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Figure 13-9:    Final Mine Layout Plan, Phoenix, Phoenix Complex
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Note: Figure prepared by NGM, 2022.
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Figure 13-10:    Final Mine Layout Plan, Vista, Turquoise Ridge Complex
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Note: Figure prepared by NGM, 2022.
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Figure 13-11:    Final Mine Layout Plan, Mega Pit, Turquoise Ridge Complex
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Note: Figure prepared by NGM, 2022.
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Table 13-2:    Underground Mining Methods
SiteCut-and-FillLong-hole Open
Stoping
Cemented Backfill Type
UnderhandOverhandPasteCRF
LeevilleXXXXX
GoldstrikeXXXXX
ExodusXX
Pete BajoXXX
El NiñoXXX
Cortez HillsXXXX
Gold RushXX
Turquoise RidgeXXX
Long-hole stopes can be either transverse or longitudinal, depending on mineralization geometry and ground conditions. If the strike length of the ore is >60 ft, the development is driven to the end and the stope is mined in a retreat fashion in sections that are generally no longer than 60 ft. Each section is mined and filled before the next section is mined. If ground conditions are poor, the long-hole stope section length can be reduced. Transverse long-hole stopes are typically designed at various heights ranging from 35–100 ft, based on the existing and planned sill development levels used in the active mining areas. Stope widths are designed at varying distances, from 20–25 ft, based on the ground conditions. In secondary stopes, the width is dictated by the actual dimensions of the adjacent primary stopes. Development of the secondary sills may be reduced to about 13 ft, leaving a rock “skin” to account for poor quality backfill in the adjacent stopes. The overall stope length is based on the transverse dimension of the ore; however, individual stopes can be limited to approximately 45 ft.
Overhand drift-and-fill, back stoping, and benching may be used, based on ground conditions and the geometry of the ore zones.
Depending on the operation, material is loaded into haul trucks and hauled to surface using declines, or hoisted via shafts.
Backfill is generated by surface paste plants or underground batch plants. Backfill materials can include quarried crushed rock, crushed open pit waste rock, or roaster tailings. Cement powder and fly ash are used as binders.
Ventilation requirements are met using push–pull methods, with the airflow managed by intake and exhaust fans. Air is typically delivered via shafts or declines, ramps and raises, and circulated through a series of working levels, then exhausted via shafts, declines or raises. Mine air coolers can be installed on the mine air intakes, and spray chambers can be provided for mine air cooling and dust removal. Ventilation designs comply with applicable Mine Safety and Health Administration regulations.
Faces are generally sampled as the development advances and the sample grades are used to estimate the mine production grade and to determine the limits of the ore drives. Muck piles are typically sampled by the load-haul-dump (LHD) vehicle operator.
Mobile equipment maintenance shops and service bays are located underground. Service trucks and tractors are used to access remote areas or provide repair and maintenance services away from the maintenance shops.
Radio, telephone, and wireless network communications are used.
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The final underground layouts for the underground mining operations are provided in Figure 13-12 to Figure 13-17 (Carlin Complex), Figure 13-18 (Cortez Complex), Figure 13-21 and Figure 13-22 (Turquoise Ridge Complex).
13.5    Production Schedule
Mining rates for the open pit and underground deposits are summarized in Table 13-3 and Table 13-4. The tables also provide the estimated mine life and the last year of projected operations.
13.6    Blasting and Explosives
Explosives are supplied by an explosives contractor. Emulsion or ANFO is used, depending on the blasting conditions, together with various packaged explosives and initiation systems as required. Blast patterns are laid out according to material type. Appropriate powder factors are used to match ore, waste, and overburden types.
13.7    Waste Rock Storage Facilities
The currently active waste rock storage facilities (WRSFs) and the planned WRSF expansions have adequate capacity for the LOM.
The management of waste rock is based on categorizing by waste rock types based on analytical parameters, with additional refining of waste polygons based on geologic interpretation. The Nevada Operations monitor the requirements for waste and capping materials to ensure that the facilities comply with requirements of the various permits and to ensure that acid-generating waste is capped with waste rock with a net neutralizing material.
13.8    Stockpiles
The open pit production schedules have significant variation in ore delivery over time and there is a high proportion of the ore that is stockpiled after mining and before processing. There are several stockpile options, all of which are based upon the grade of material and varying from leach ore to mill ore. Leach material is generally delivered directly to the leach pads.
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Figure 13-12:    Final Mine Layout Plan, El Niño, Carlin Complex
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Figure 13-13:    Final Mine Layout Plan, Goldstrike, Carlin Complex
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Note: Figure prepared by NGM, 2021.
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Figure 13-14:    Final Mine Layout Plan, Rita-K, Carlin Complex
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Note: Figure prepared by NGM, 2021.
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Figure 13-15:    Final Mine Layout Plan, West Leeville, Turf, Four Corners, Carlin Complex
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Figure 13-16:    Final Mine Layout Plan, Exodus, Carlin Complex
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Note: Figure prepared by NGM, 2022.
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Figure 13-17:    Final Mine Layout Plan, Pete Bajo, Carlin Complex
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Note: Figure prepared by NGM, 2021.
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Figure 13-18:    Final Mine Layout Plan, Middle Zone, Cortez Hills, Cortez Complex
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Note: Figure prepared by NGM, 2021.
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Figure 13-19:    Final Mine Layout Plan, Lower Zone, Cortez Hills, Cortez Complex
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Note: Figure prepared by NGM, 2021.
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Figure 13-20:    Final Mine Layout Plan, Goldrush, Cortez Complex
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Note: Figure prepared by NGM, 2021.
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Figure 13-21:    Final Mine Layout Plan, Turquoise Ridge Underground, Turquoise Ridge Complex
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Note: Figure prepared by NGM, 2021.
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Figure 13-22:    Final Mine Layout Plan, Vista Underground, Turquoise Ridge Complex, Cross-section View
picture2a.jpg
Note: Figure prepared by NGM, 2021.
Table 13-3:    Production Plan (2022–2036)
ItemUnitLOM202220232024202520262027202820292030203120322033203420352036
Total ore minedM tonnes577.231.635.972.058.878.768.049.434.132.530.025.514.94.03.93.9
Operating waste minedM tonnes1,201.7192.7208.5145.2174.2171.160.135.768.760.242.213.811.01.61.61.5
Note: numbers have been rounded.
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Table 13-4:    Production Plan (2037–2045)
ItemUnit203720382039204020412042204320442045
Total ore minedM tonnes3.93.93.73.73.53.61.91.30.2
Operating waste minedM tonnes1.61.61.51.51.41.50.80.50.1
Note: numbers have been rounded.
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13.9    Equipment
The number of loading and hauling units allocated to each deposit varies depending on the operational needs from the open pit mine plans. The equipment list also includes the auxiliary equipment needed to support mining and the re-handling of the ore from the stockpile pad into the mill feeders.
Underground equipment requirements include large scale LHDs and haulage trucks, jumbos, and auxiliary equipment.
Equipment requirements for the open pit operations for the LOM are summarized in Table 13-5. Table 13-6 summarizes the equipment requirements for the underground operations.
13.10    Personnel
The Nevada Operations currently employ 2,362 persons in the open pit (Table 13-7) and 2,750 persons in the underground mining operations (Table 13-8).
Table 13-5:    Open Pit Equipment Requirements
Complex
Equipment Type
Peak Requirement
CarlinShovel6
Truck60
CortezShovel8
Truck74
PhoenixShovel3
Truck16
Turquoise RidgeShovel2
Truck11
Long CanyonShovel2
Truck11
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Table 13-6:    Underground Equipment Requirements
Complex
Equipment Type
Peak Requirement
CarlinLoader34
Truck44
Jumbo20
Bolter25
Long-hole drill11
CortezLoader13
Truck26
Jumbo11
Bolter8
Long-hole drill6
Turquoise RidgeLoader16
Truck20
Jumbo6
Bolter12
Long-hole drill2
Table 13-7:    Open Pit Personnel Count
Complex
Peak Personnel
Carlin905
Cortez763
Phoenix288
Turquoise Ridge243
Long Canyon163
Total2,362
Table 13-8:    Underground Personnel Count
Complex
Peak Personnel
Carlin1,549
Turquoise Ridge481
Cortez720
Total2,750
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14.0    RECOVERY METHODS
14.1    Process Method Selection
The designs of the process facilities design were based on a combination of metallurgical testwork, previous study designs, and previous operating experience. The designs are generally conventional to the gold industry.
Metallurgical facilities comprise nine heap leach facilities, two oxide plants, two flotation plants, two autoclave facilities and two roaster facilities (Table 14-1).
14.2    Process Flowsheets
An example schematic showing a typical leach operation is provided in Figure 14-1. The leach operation shown is at the Cortez Complex. Figure 14-2 to Figure 14-8 show simplified flowsheets for each of the mills within the Nevada Operations. Figure 14-9 shows the flowsheet for the Goldstrike autoclave. The flowsheet for the Sage autoclave was included in Figure 14-8. The Goldstrike roaster flowsheet is provided in Figure 14-10.
14.3    Process Facilities
14.3.1    Heap Leach
14.3.1.1    Gold Leach Pads
The basic steps in heap leaching are:
Run-of-mine or crushed ore are placed onto a prepared surface;
Gold dissolution is promoted by applying a weak sodium cyanide solution as the lixiviant to the surface of the heap;
Solution is collected in the leach pad drain system and then pumped to activated carbon columns (CIC) where gold loads onto activated carbon;
Gold-laden carbon is reclaimed from the CIC circuit and transported to a centralized carbon stripping system where the gold is stripped from the carbon and recovered by electro-winning. Stripped carbon is recycled and reused.
Gold recovery from heap leaching is a function of solution application and management, particle size distribution, time, and mineralogy. Cyanide leach kinetics in the heap leach pads is most strongly affected by ore characteristics.
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Table 14-1:    Process Facilities
Process TypeLocationNote
AutoclavesGoldstrike autoclave (Carlin)
Sage autoclave (Turquoise Ridge))
RoastersGold Quarry roaster (Carlin)Formerly referred to as Mill 6.
Goldstrike roaster (Carlin)
Oxide millsJuniper (Turquoise Ridge)
Cortez oxide mill
Flotation facilitiesPhoenixFlotation for copper concentrate followed by carbon-in-leach for gold–silver recovery.
Gold Quarry concentrator (Carlin)Formerly referred to as Mill 5.
Heap leach facilitiesLong Canyon
Cortez Area 30
Cortez Area 34
Phoenix (copper leach)
Twin Creeks L8 (Turquoise Ridge)
Twin Creeks L31 (Turquoise Ridge)
Carlin South Area Leach (property)
Carlin South Area Leach (non-property)
Carlin North Area Leach
Emigrant (Carlin)
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Figure 14-1:    Heap Leach Process Schematic
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Figure 14-2:    Flowsheet, Gold Quarry Concentrator
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Figure 14-3:    Flowsheet, Gold Quarry Roaster
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Figure 14-4:    Flowsheet, Pipeline Mill
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Figure 14-5:    Flowsheet, Phoenix Run-of-Mine Leach
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Figure 14-6:    Flowsheet, Phoenix SX/EW
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Figure 14-7:    Flowsheet, Phoenix Mill
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Figure 14-8:    Flowsheet, Juniper Mill
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Figure 14-9:    Flowsheet, Goldstrike Autoclave
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Figure 14-10:    Flowsheet, Goldstrike Roaster
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For oxide leach, run-of-mine material is tracked by pit or royalty source. Tonnage and contained ounces are based upon truck counts, tonnage factors, and the blast hole kriged grade of the material delivered. The tons are adjusted to match the belt-scale weightometers within the crushing circuit for all ore that is crushed. The relative proportions of the sources and royalties of both tons and ounces are conserved, as is the kriged grade. Leach pad inventory is tracked monthly.
14.3.1.2    Copper Leach Pads
Smith Williams Consultants, Inc. (later AMEC and then NewFields) designed the leach pad and ponds for the project. The Phoenix copper leach project constructed a conventional run-of-mine leach pad designed to facilitate the stacking of copper oxide and transition ores as well as the subsequent leaching, solution collection, and pumping. The leach pad design incorporates three phases of construction. Phases I–III have capacities of 49 Mt, 47 Mts, and 40 Mt respectively. The pad construction is in average lift heights of 6.1 m to a maximum height of 91.4 m at a slope of 2.5 horizontal to 1 vertical. The total leach pad area encompasses nearly 162 ha and is a closed-loop system.
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The leach pad incorporates a dual liner system, utilizing a low-permeability compacted soil (prepared subgrade) with a coefficient of permeability less than or equal to 1 x 10-6 centimeters per second (cm/s) at 92% of the maximum dry density. A double textured 80-mil high density polyethylene (HDPE) geomembrane overlays the subgrade layer. A protective layer of sand and gravel or silt at a maximum size of 25.4 mm covers the liner, followed by the coarse aggregate drainage layer and solution collection piping. Ten independent solution collection systems allow for operational monitoring of each cell independently of the others. The design also incorporated a process component monitoring system to monitor the leach pad for leaks in the primary liner. The process component monitoring system design helps operations to identify the cell and leach pad phase if a leak occurs.
In addition to the pad, the leach circuit also consists of three ponds: the rich leach solution (PLS)/sediment pond, the Phase I events pond, and the Phase II events pond. A tank within a pond for secondary containment purposes collects the raffinate for distribution to the leach pad. The pond design includes double lining with smooth 80-mil secondary HDPE geomembrane overlain by 80-mil textured primary liner. Each pond has a sloped bottom and a leak collection and recovery system. The Phase II events pond construction will occur with construction of the Phase II leach pad expansion and has sufficient volume to accommodate the Phase III expansion as well. Operating pond design provides the ability to contain the operating volume as well as having approximately 1m of freeboard for un-planned events. The event pond designs accommodate leach pad drain down from an eight-hour power outage or pump loss as well as precipitation from a 100-year/24-hour storm event. The PLS/sediment and Phase I/II event ponds have a total volume of nearly 305 ML.
The raffinate tank is located approximately two miles northeast of the leach pad near the SX/EW facility, and has an operating volume of approximately 1.1 ML. The tank location is approximately 96 m higher in elevation than the toe of leach pad. To capitalize on the elevation difference, the raffinate feed to the leach pad occurs via a level control valve to allow gravity flow to the pad. Recognizing that as the leach pad gets higher it will reach a point where gravity flow is no longer feasible, the raffinate tank design incorporated nozzles and isolation valves to accommodate the future booster pump addition with minimal interruption to operations. The raffinate tank connects to an organic recovery tank so that operations can periodically flood the organic off the surface of the raffinate tank for recovery in the crud and organic treatment system. The raffinate line between the tank and the leach pad is HDPE and runs parallel to the PLS and fresh water lines in a lined secondary containment channel between the leach pad and plant.
The raffinate distributes to the leach pad via drip emitters at a design flow rate of 2,271 m3/hr. The Phoenix ores vary in acid consumption by ore type. Based on testwork, the anticipated average life-of-mine (LOM) acid consumption is approximately 13 kg/t, though early indications from operations suggest long-term consumptions may be less than projected. The pH targets in the raffinate are between 1.5 and 3. Unlike many copper heap leach operations, Phoenix saw no benefit to an acid cure. Higher acid additions only provided opportunities for higher acid consumption.
The design solution application rate is 0.1 L/min/m2). The leach pad operates on a 90-day active leach cycle. Operations allow the area to dry before removing piping and cross-ripping the leach pad to a depth of 3m, readying the area for new ore placement. The rip depth exceeds the 2.4m maximum required to extend beyond the truck-induced compaction zone, which was confirmed with multiple tests conducted on site. The compaction difference between
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1.5 m and 2.4 m was negligible, but to ensure adequate long-term percolation at full height, site operations elected to rip the full 3 m depth.
Drain down from the leach pad reports to the PLS/sediment pond. In order to reduce the introduction of fine particulates into the SX plant, the inflow to the PLS pond initially reports to a segregated sediment storage compartment. This allows the fine solids to settle out before the PLS overflows an internal berm into the operating portion of the pond. Four 600 hp vertical turbine pumps transfer the PLS from the pond to the SX plant at an average grade of 0.6 g/L for the LOM. At design flow, there are three operating pumps with one installed spare.
14.3.2    Process Plants
14.3.2.1    Gold Quarry Concentrator (Carlin Complex)
The Gold Quarry concentrator (formerly referred to as Mill 5) relies on oxide pit, oxide stockpile, low-carbonate sulfide material, and high-carbonate sulfide material. The Gold Quarry concentrator uses a combination of flotation and cyanide leaching to recover gold. The basic steps are as follows:
Crushing and grinding where ore is ground to the appropriate particle size, usually about 65% -200 mesh;
Conditioning with a mixture of chemicals to provide for air bubble attachment to pyrite, arsenian pyrite, and arsenopyrite particles while minimizing bubble attachment to gangue minerals such as silica or calcite;
Froth flotation where the pyrite, arsenian pyrite, and arsenopyrite are floated into a concentrate by sparging air into the conditioned slurry;
Concentrate is thickened and filtered so that it can be further processed through a separate oxidizing facility such as the Gold Quarry roaster or the Sage autoclave;
Residual gangue or flotation tailings contain sufficient residual gold to warrant CIL processing;
CIL processing involves leaching of the slurry with cyanide to dissolve the gold and then adsorb the gold onto activated carbon;
Gold-laden coconut carbon is transported to the carbon stripping facility where the gold is stripped from the carbon and recovered by electro-winning. Stripped carbon is recycled and reused.
Gold recovery from the flotation process is dependent upon the application of the appropriate amount of grinding to liberate the pyrite and enable the sulfide mineral(s) to be selectively floated away from the bulk of the ore. Gold recovery from the CIL process is typically a function of the ease of solution access to gold particles.
Plant throughput is a nominal 15,600 st/day which is below the permitted rate of 36,000 st/day.
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14.3.2.2    Pipeline Mill (Cortez Complex)
The Pipeline mill treats material from the Crossroads/Pipeline open pit, Cortez Pits open pit, Cortez Hills underground, and historical stockpiles derived from mining of the Pipeline and Cortez Hills open pits.
The basic steps are as follows:
Crushing and grinding;
CIL and CIC circuits;
Counter-current-decantation wash thickener circuit
Carbon stripping and reactivation circuits,
Doré refining.
Plant throughput can reach 18,000 st/d depending on the hardness of the ore being processed. The plant is permitted for an annual average of 5.4 Mst/a.
14.3.2.3    Phoenix SX/EW Plant (Phoenix Complex)
The Phoenix SX/EW plant treats material from the Fortitude and Bonanza open pits.
The SX plant consists of a single train of conventional mixer–settlers. There are two extraction mixer–settlers with a single strip mixer–settler. The settler design provides operational flexibility to run in series (2 + 1) or in parallel (1 + 1 + 1) depending on operating conditions. Each of the extraction mixer–settlers has a single pump mixer followed by secondary and tertiary mixers, all with variable frequency drive (VFD) control. The mixer–settlers, constructed of 316 L stainless steel, are approximately 31 m long by 25 m wide by 1.3 m deep. There are two rows of picket fences, including a chevron fence followed by a straight fence. The strip mixer–settler only includes a primary pump mixer and a secondary mixer, both with VFD control.
The process uses Cytec’s ACORGA M5774 extractant and Chevron Phillips’ Orfom SX-12 diluent. The extractant concentration in the organic is approximately 3.5 volume percent (v/o). Fire mitigation uses a high pressure water mist that rapidly cools the flames and displaces the available oxygen away from the point of combustion while filling the remaining atmosphere with water vapor.
Tank farm design includes standard features such as electrolyte and organic storage tanks, electrolyte dual media filters, and equipment for organic treatment. Because of the extreme temperature variance, there are three boilers installed to ensure adequate electrolyte heating capacity during the winter months. To help minimize the risk of sulfate crystallization, all electrolyte lines and tanks are heat traced and insulated. The electrolyte tanks are also inside a building shell to further reduce the risk. The building also contains a segregated, fire protected room for the organic treatment filter and three phase decanting crud centrifuge.
The electrowinning building houses 30 polymer-concrete EW cells. Each cell contains 60 permanent stainless steel cathodes and 61 lead-calcium-tin anodes. The plant layout allows for future expansion to the north, mirroring the existing plant, to double the EW capacity if necessary. The design average production is 10,886 t/a of copper cathodes. The design current density is 323 A/m2 with a maximum current density of 377 A/m2.
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Copper electrowinning uses variable reactance transformer (VRT) and silicon controlled rectifier (SCR) technology.
The EW building houses metallurgy, operations, and maintenance personnel offices, the plant control room, a maintenance facility, and training/break room, along with locker room facilities. Next to the control room, the project provided a process/metallurgical laboratory for performing operational control sample analyses and cathode grading. Assaying of composite samples for metallurgical accounting occurs at an offsite lab.
The plant receives concentrated sulfuric acid from the Gold Quarry roaster and from an offsite bulk storage facility. The acid arrives by truck for gravity offload into two bulk storage tanks for leach acid and one small storage tank for electrolyte makeup acid. Diluent is the only other bulk reagent, which also arrives by truck for gravity offload into a site storage tank.
Plant throughput is nominal 28 st/day which is below the permitted rate 33 st/day.
14.3.2.4    Phoenix Mill (Phoenix Complex)
The Phoenix mill treats material from the Fortitude and Bonanza open pits. The plant has a copper/gold specific flotation system designed to provide concentrate products for sale to an outside smelter. The basic steps are as follows:
Crushing and grinding;
Adjustment of pH as required;
Conditioning the slurry using collectors and activators to prevent oxidation of the sulfide mineral surfaces and create hydrophobic conditions;
Frothing chemicals and air added to the flotation cells creating a liquid/gas interface for the hydrophobic particle to cling to;
Residual gangue minerals contain sufficient gold for recovery by conventional CIP processing;
Flotation tails are processed through a sands/slimes separation circuit using Hydrosizers, ahead of the CIL circuit. Most of the gold goes to the sands, and most of the copper goes to the slimes, reducing cyanide consumption in the CIP circuit. Slimes are thickened and sent to the TSF;
The concentrate is filtered and processed through an outside smelter. The final flotation concentrate contains all of the copper, about 40% of the gold, and 35% of the silver produced by the Phoenix plant.
Gold is also recovered by gravity separation:
Gravity separation occurs in two circuits, the first in the grinding circuit and the second on the initial rougher float product;
The primary gravity circuit processes screened SAG and ball mill products;
The flotation gravity circuit is in two stages, including a second, cleaner stage;
All gravity concentrates undergo intensive cyanidation, producing a rich solution that joins rich solution from the CIP circuit ahead of electrowinning.
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The Phoenix mill treats copper sulfide and gold bearing ores from the Fortitude and Bonanza pits. Plant throughput is a nominal 36,000 st/day which is below the permitted rate of 57,600 st/day.
14.3.2.5    Juniper Mill (Turquoise Ridge Complex)
Run-of-mine higher-grade oxide ore from the Turquoise Ridge Surface sources are blended for gold grade, hardness, and carbonate content and fed to the Juniper oxide mill. Undersize rejects from the Turquoise Ridge Underground aggregate crusher are added when additional carbonate is needed. The process consists of:
A variable speed 900 Hp SAG mill operating in closed circuit with a discharge screen. The SAG mill product is fed to a 1,150 Hp ball mill operating in closed circuit with cyclones. The final product grind size is 90% - 200 mesh;
Cyclone overflow product is fed to the neutralization circuit, where the carbonate in the oxide ore is used to neutralize the acidic autoclave discharge slurry. The combined oxide slurry and autoclave discharge slurry are further neutralized with lime before treatment in the CIL circuit;
The CIL circuit is used to concurrently leach gold from the ore and adsorb it onto activated carbon. The final tailings slurry is pumped to the TSF;
The gold-loaded carbon is stripped, acid washed, kiln reactivated, and recycled back to the CIL circuit. The gold stripped from the carbon is electrowon and refined into doré for shipment to an offsite refinery.
Plant throughput can reach 120 st/hr depending on the hardness of the ore being processed. This is augmented when limestone is added. The plant is permitted for running 250 st/h or 6,000 st/d.
14.3.3    Autoclaves
14.3.3.1    Goldstrike (Carlin Complex)
The Goldstrike autoclave treats material from Goldstrike Betze Open Pit. The basic steps are as follows:
Feed is sourced from ore stockpiles located adjacent to the primary crusher;
A Phase I grinding circuit consists of a jaw crusher, SAG mill operating in closed circuit with a pebble crusher, two secondary ball mills, and a tertiary ball mill operating in closed circuit with cyclones;
Phase I cyclone overflow feeds two thickeners, providing an ability to operate the grinding circuits separately on alkaline or acid POX feed blends;
A Phase II grinding circuit consists of a gyratory crusher, SAG mill operating in closed circuit with a pebble crusher;
The Phase II discharge screen undersize is pumped along with ball mill discharge to a bank of cyclones;
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Grinding circuit thickener underflow when treating an acid ore blend (ore treated with acid) is fed to a series of acidulation tanks where sulfuric acid is added if required to digest carbonate content;
There are five autoclaves operating in parallel at Goldstrike, all of which are configured for acid POX, while three lines can also be configured for alkaline ore POX;
The milled, acidified slurry is fed to a series of preheaters where hot steam from the autoclave discharge flash tank is contacted with incoming feed to preheat the slurry and transfer available heat from the oxidation reactions. Pressure oxidation is carried out under elevated pressure and temperature using high purity oxygen in the autoclaves;
Autoclave discharge progresses through a series of flash vessels with additional cooling accomplished in tube and shell slurry heat exchangers. Autoclave discharge slurry is acidic due to the formation of sulfuric acid from sulfide oxidation reactions;
Neutralization of autoclave discharge to pH 8.0 is accomplished with slaked lime prior to thiosulfate leaching;
As carbonate levels in a portion of the ores at Goldstrike have increased, three of the autoclaves (#4, #5, #6) have been converted such that they can operate under alkaline conditions;
The grinding circuit product is fed to a thickener dedicated to alkaline POX operation. Thickener underflow is directed to the acidulation circuit for storage, but no acid is needed;
The alkaline slurry reports through a series of slurry coolers to neutralization, where it is adjusted to pH 8.0 with slaked lime and then directed to thiosulfate leaching and resin-in-leach for gold recovery;
The slurry from the alkaline and acid autoclave circuits is pumped to parallel calcium thiosulfate–resin-in-leach circuits. Cyanide has been replaced with the on-site production of calcium thiosulfate for gold dissolution. The resin is pumped counter-current to the slurry with a portion of new or recycled resin returned directly to the first resin-in-leach tank. From the first tank, loaded resin is transferred to elution and refining for the recovery of gold. The slurry exiting the final tank is sent to a tailings thickener and then pumped to a dedicated TSF to avoid comingling thiosulfate and cyanide solutions;
Gold-bearing resin is processed in a multi-stage elution circuit. Rich solution containing the gold is forwarded to dedicated electrowinning cells operated within the gold refinery to produce doré bullion which is shipped off site for further refining. The stripped and regenerated resin is returned to the resin-in-leach circuit.
The plant is permitted for an annual average of 1,000 st/operating hour per autoclave limit.
The autoclave is planned to be converted to CIL in 2022–2023 once all of the high alkaline, preg-robbing, low-grade, double refractory stockpiles are depleted.
14.3.3.2    Sage (Turquoise Ridge Complex)
The Sage autoclave treats material from the Turquoise Ridge Underground, Mega open pit, Vista underground, and historical stockpiles derived from mining of the Mega and Vista open pits.
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The process consists of:
SAG milling followed by ball milling;
Cyclone overflow reports to a thickener. Thickener underflow reports to an acidification circuit where sulfuric acid is added as necessary. Thickener overflow solution is returned to the milling circuit;
After acidification, ore slurry is added to two identical autoclaves that are operated in parallel. Two stages of flash heat recovery are used. Autoclave discharge is cooled before reporting to the lime neutralization circuit;
Oxide ore and acidic oxidized sulfide ore slurry are combined in the neutralization circuit;
After neutralization, the ore slurry reports to a CIL circuit where the ore is leached in cyanide solution to extract the gold. Final tailings slurry is pumped to the TSF;
Loaded carbon from the CIL circuit is transferred to the recovery plant. After acid washing to remove inorganic contaminants, the carbon is transferred to the pressure Zadra stripping circuit;
Rich solution from the stripping circuit is pumped to an electrowinning circuit where precious metal is removed and refined into doré bars.
Plant throughput is a nominal 13,900 st/day which is below the permitted rate of 16,800 st/day.
14.3.4    Roasters
14.3.4.1    Goldstrike (Carlin Complex)
The Goldstrike roaster treats open pit and underground material from numerous sources including the South Arturo open pits, El Niño underground, Goldstrike underground, Goldstrike open pit, historical stockpiles derived from mining of the Goldstrike open pit, Goldstar open pit, Leeville underground, Pete Bajo underground, Exodus underground, Cortez Crossroads/Pipeline open pit, Cortez Hills underground, historical stockpiles derived from mining of the Cortez Hills and Crossroads/Pipeline open pits, and Goldrush underground.
The basic steps are as follows:
Two stages of open circuit crushing including a gyratory crusher, scalping screen and cone crusher;
Crusher product is sent to one of the two parallel dry grinding circuits. The ore is heated with natural gas and progresses toward the center of the mill as it is being dried and ground where it is transported with air through grates, a static cyclone classifier and a dynamic classifier for size separation;
Oversize is returned to the second stage of the grinding mill for further size reduction while undersize material is transferred to bag houses for further processing;
Material from the roaster silo is fed to the top of the roaster by a bucket elevator and a fluidized feeder. The fluidized feeder distributes ore continuously to the first stage (upper) bed of the two parallel roasters;
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Solids flow by gravity to the second stage of the roaster through an inter-stage solid transfer system. High purity oxygen is injected at the bottom of the second stage of the roasters. Oxidation is essentially complete after the second stage;
A gas circuit removes contaminants;
The calcine product from the roaster is cooled rapidly in quench tanks. The cooled quench tank discharge from both roasters is combined and the resulting slurry feeds neutralization tanks;
Neutralization circuit slurry is dewatered in a thickener with excess water recycled for reuse in the quench tanks. The thickener underflow reports to the roaster CIL circuit;
Slurry flows through the series of CIL tanks. Activated carbon is then transferred to a loaded carbon holding bin and into a truck that transports it for elution, acid washing, and regeneration in a carbon handling circuit located within the Goldstrike autoclave facility.
Plant throughput is a nominal 18,700 st/day which is below the permitted rate of 24,000 st/day.
14.3.4.2    Gold Quarry (Carlin Complex)
The Gold Quarry Roaster treats open pit and underground material from Carlin and Cortez, as well as sulfide concentrates. The process steps at the Gold Quarry Roaster are as follows:
Crushing and dry grinding;
Roasting at a high enough temperature to oxidize the sulfide and carbonaceous material, but at a low enough temperature that the gold is not re-encapsulated in microscopic “clinkers”;
Leaching using a cyanide solution in the slurry in conjunction with oxygen which can be supplied by air-sparging or by the addition of enriched oxygen;
Magnetic separation is applied to recover gold locked in a magnetic component of the tailings and transported to an autoclave for acidification and cyanide leaching;
CIL processing involves leaching of the slurry with cyanide to dissolve the gold and then adsorb the gold onto activated carbon;
Gold-laden coconut carbon is transported to the carbon stripping facility where the gold is stripped from the carbon and recovered by electro-winning. Stripped carbon is recycled and reused.
A cost-saving step is afforded by processing the off-gas from the roaster for recovery of sulfur dioxide as sulfuric acid. Because the final processing steps are the same as in the oxide mill, the performance of a roasting facility is similarly driven by the same parameters with the addition of sufficient retention time in the roaster in contact with sufficient oxygen to complete the oxidizing process.
Plant throughput can reach 13,000 st/d, depending on the hardness of the ore being processed. The plant is permitted for an annual average of 13,440 st/d.
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14.4    Equipment Sizing
The major equipment required for the heap leach operations is summarized in Table 14-3, in Table 14-4 for the mill facilities, in Table 14-5 and Table 14-6 for the Phoenix facilities, in Table 14-7 for the autoclaves and in Table 14-2 for the roaster.
14.5    Power and Consumables
14.5.1    Power
Power supplies are discussed in Chapter 15.11.
14.5.2    Consumables
The major consumables in the gold heap leach facilities are antiscalant, cyanide and lime. The copper heap leach pads use sulfuric acid.
The Phoenix SX/EW plant uses sulfuric acid (electrolyte), cobalt, diluent, extractant, diatomaceous earth, clay, and starch.
Mill facilities use grinding media, balls for ball mills, lime, cyanide, collector, frother, and hydrogen peroxide.
The Goldstrike autoclave requires calcium thiosulfate and resin. Both autoclaves use grinding media, balls for ball mills, lime, and cyanide.
Table 14-2:    Key Equipment List, Roasters
RoasterEquipment Type/ItemNumber
Goldstrike RoasterThyssenkrupp Double Rotator, 2x 5.8mx 17.5m, 7355kW1
Dorr Oliver Roasters 2 stage fluidized bed2
Gold Quarry RoasterDouble Rotator 6.1m x 25.6m, 11MW1
CFB Roasters2
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Table 14-3:    Key Equipment List, Leach Facilities
Leach AreaEquipment Type/ItemNumber
South Area Leach (SAL)Rich solution pumps8
Spent solution pumps3
CIC21, 18 in operation
Solution flow6,500 gpm
North Area Leach (NAL)Rich solution pumps4
Spent solution pumps3
CIC12
Solution flow7,000 gpm
Emigrant Area Leach (EAL)Rich solution pumps3
Spent solution pumps3
CIC18, 12 in operation
Solution flow7,500 gpm
Cortez Leach Area 30Pregnant pumps6
Barren pumps5
CIC20
Solution flow21,000 gpm, max permit
Cortez Leach Area 34Pregnant pumps3
Barren pumps2
CIC15
Solution flow12,600 gpm, max permit
Table 14-4:    Key Equipment List, Mill Facilities
AreaItemDescriptionCapacity
Cortez OxideSAG millAllis 26ft x 11 ft4500 hp
Primary ball millAllis 16ft x 28.5 ft4500 hp
JuniperSAG millMarcy 18 ft x 6.5 ft900 hp
Primary ball millMarcy 11.5 ft x 16.4 ft1,150 hp
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Table 14-5:    Key Equipment List, Phoenix SX/EW
ItemQuantitySource/Vendor
Mixer tank12CAID
Raffinate tank1GBI
Mixer6Lightnin
Electrolyte tank4GBI
Crud centrifuge1Flottweg
Electrolyte filter1SpinTek
Pre-coat mix tank1Durco Filters
Organic filtrate tank1Durco Filters
Loaded organic tank1GBI
Organic treatment filter feed tank1CAID
Anodes1830Quemetco Metals
Cathodes1800CAID
Electrowinning cell30CTI/PI Int'l. Inc.
Cathode strip conveyer1Mesco/PI Int'l. Inc.
EW cell hood30SAME
Rectifier2Ametek
Sulfuric acid leach storage tank2Contract C002
EW acid storage tank1Great Basin Ind
Diluent storage tank1Great Basin Ind
Guar/starch mix tank1Solid Technology
Extraction/ strip settler3CAID
Table 14-6:    Key Equipment List, Phoenix Mill
ItemQuantitySource/Vendor
60 x 89 primary gyratory crusher1Fuller Traylor
50 x 65 primary gyratory crusher1Metso
Secondary cone crushers2Raptor 1100
Pebble cone crusher1Metso MP800
36’ x 18’ SAG mill 18,000 hp1Farnell Thompson
21’ x 33’ overflow ball mill 9,500 hp2Farnell Thompson
KC-48 concentrators4Knelson
CS-4000 intensive cyanidation reactor1Consep Acacia
160 m3 flotation tank cells
12Dorr-Oliver
30 m3 flotation tank cells
8Dorr-Oliver
E-CAT concentrate thickener1EIMCO
32 m high rate tailings thickener1Outokumpu
Plate and frame filter press1Lasta
49.5’ x 54’ agitated leach tanks2
36.5’ x 40’ agitated CIP tanks5
ADR circuit1Pressure Zadra
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Table 14-7:    Key Equipment List, Goldstrike Autoclave
AutoclaveMill CircuitItemSize/QuantitySource/Vendor
GoldstrikeMill 1Jaw crusher300 hp 50 in x 60 inTelsmith
SAG mill2500 hp 22 ft x 8 ftAllis Chalmers
Secondary ball mill1,800 hp 13.5ft x 18 ftDominion
1,250 hp 12.5 x 14 ftAllis Chalmers
Mill 2Gyratory crusher400 hp 42 in x 65 inAllis Chalmers
Autogenous grind mill4,000 hp 24 ft x 12 ftFuller
Secondary ball mill5,000 hp 16.5 ft x 30.5 ftFuller
Table 14-8:    Key Equipment List, Sage Autoclave
ItemDescriptionCapacity
SAG millKoppers 28 ft x 10 ft
4,000 hp
Primary ball millSvedala 20 ft x 30 ft
7,500 hp
Secondary ball mills2 x Dominion 16.5 ft x 29 ft
4,000 hp
Autoclaves16.5 ft x 73.3 ft89,500 gal
Oxygen plant
air products ASU 95% O2
1,360 t/d
The roasters require oxygen, grinding steel, cyanide, lime and sulfur.
14.5.3    Water
Water supply for process operations is discussed in Chapter 15.7.
14.6    Personnel
The LOM average personnel counts for the Nevada Operations are:
Long Canyon leach: 13;
Phoenix Mill: 120;
Phoenix copper leach: 24;
Goldstrike autoclave: 94;
Goldstrike roaster: 116;
Gold Quarry roaster: 212;
Gold Quarry concentrator: 132;
Carlin leach: 35;
Emigrant leach (residual leach, no active mining or mineral reserves): 7;
Cortez Pipeline oxide mill: 101;
Cortez leach: 16;
Sage autoclave/Juniper mill: 113;
Turquoise Ridge leach: 13.
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15.0    INFRASTRUCTURE
15.1    Introduction
Major infrastructure to support mining operations is constructed and operational. This includes:
Open pits;
Shafts, hoisting infrastructure, portals, declines, ramps; ventilation systems; backfill plants;
Heap leach, mill, autoclave and roasting facilities; mine laboratories;
Stockpiles; waste rock and tailings storage facilities;
Conveyors and pipelines;
Access and haul roads;
Water management and treatment facilities;
Power station, transmission lines, electrical stations and substations, electrical distribution networks;
Truck shops, maintenance facilities, warehouses, and administrative facilities/offices;
Communications, including fiber optic lines and network communications, mine radio networks, leaky-feeder systems;
Core and sample pulp storage.
Infrastructure layout plans are provided in Figure 15-1 to Figure 15-7.
Additional infrastructure will include:
Cortez Complex, Goldrush: mine accesses including portals, declines, and inclines; surface dewatering wells and associate pipe and pumping infrastructure; rapid infiltration basins; underground dewatering/pumping infrastructure; backfill plant; ventilation system; electrical distribution network;
Turquoise Ridge: a third shaft is being excavated at Turquoise Ridge Underground, and will require some additional supporting surface infrastructure.
The Cut40 open pit will require relocation of some of the existing surface infrastructure.
15.2    Roads and Logistics
The Project is accessed by all-weather road networks as discussed in Chapter 4. Rail and air services are also outlined in Chapter 4.
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Figure 15-1:    Infrastructure Layout Plan, Carlin Complex North Area
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Figure 15-2:    Infrastructure Layout Plan, Carlin Complex South Area
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Figure 15-3:    Infrastructure Layout Plan, Carlin Complex Rain–Emigrant Area
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Figure 15-4:    Infrastructure Layout Plan, Cortez Complex
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Figure 15-5:    Infrastructure Layout Plan, Long Canyon Complex
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Figure 15-6:    Infrastructure Layout Plan, Phoenix Complex
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Figure 15-7:    Infrastructure Layout Plan, Turquoise Ridge Complex
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15.3    Stockpiles
Stockpiles are discussed in Chapter 12.5 and Chapter 13.7.
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15.4    Leach Pads
There are nine heap leach facilities in the Project area, all of which are actively being leached. There is sufficient capacity in the existing pads and planned pad expansions for LOM planning purposes.
15.5    Waste Rock Storage Facilities
There are 67 WRSFs in the Project area, of which 36 are inactive and undergoing reclamation, and 31 are active. A total of 24 pits are permitted for partial or full waste backfill.
There is sufficient capacity in the existing WRSFs and planned WRSF expansions for LOM planning purposes.
15.6    Tailings Storage Facilities
There are 19 TSFs in the Project area, of which 11 are inactive and undergoing reclamation, and eight are active.
There is sufficient capacity in the active TSFs and planned TSF expansions for LOM planning purposes.
15.7    Water Supply
Water supply for processing operations is sourced, depending on the facility, from well fields, TSF reclaim, storm run-off water, and pit dewatering.
Potable water is provided by permitted water wells and supporting treatment and infrastructure facilities.
The current water sources, assuming similar climate conditions to those experienced by the operations in the past, will be sufficient for the LOM plan.
15.8    Water Management Structures
Water management operations include systems of dewatering wells, water gathering and conveyance facilities, water storage, water use, and various management options for discharge of excess water. Water not used for mining or milling can be pumped to storage reservoirs. Rapid infiltration basins are used to capture storm run-off water to avoid that water coming into contact with mining operations.
The NDEP allows selected complexes within the Nevada Operations, through discharge permits, to discharge groundwater from pumping operations to groundwater by percolation, infiltration, and irrigation.
The current water management practices are expected to be applicable for the LOM plan.
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15.9    Built Infrastructure
All key infrastructure to support mining activities contemplated in the LOM plan is in place, or has been included in the capital cost requirements in Chapter 18.
In the Turquoise Ridge complex, a third shaft is being excavated at Turquoise Ridge Underground, and will require some additional supporting surface infrastructure. The Cut40 open pit will require relocation of some of the existing surface infrastructure.
Planned infrastructure that will be required to support the Goldrush project includes:
Mine accesses including portals, declines, and inclines;
Surface dewatering wells and associate pipe and pumping infrastructure;
Rapid infiltration basins;
Underground dewatering/pumping infrastructure;
Backfill plant;
Ventilation system;
Electrical distribution network.
Within the immediate area of the planned Goldrush mine, minimal surface facilities will be installed to support the underground mining operation. These will be limited to ventilation shafts, dewatering wells, water management infrastructure power lines and all-weather roads to access the paste plant. Additional services such as a dry and major rebuild workshop will be located within the existing Cortez Mine area.
15.10    Camps and Accommodation
There are no accommodation facilities at any of the complexes. Personnel reside in adjacent settlements including Battle Mountain, Carlin, Elko, Golconda, Wells, West Wendover and Winnemucca.
15.11    Power and Electrical
Electrical power for the Carlin, Cortez, Turquoise Ridge, and Phoenix Complexes is obtained via TS Power Plant and from the Western 102 power plant (both of which are owned and operated by NGM) with transmission by NV Energy.
Power for Gold Quarry, Long Canyon, and Goldrush is supplied via the Wells Rural Electric Power Company.
The Western 102 power plant, located approximately 15 miles east of Reno, has the capacity to supply 115 MW of electricity using 14 reciprocating natural gas-fired engines, and also has a 1 MW solar plant.
The TS power plant has a capacity of 215 MW power generation from its original coal-fired process. The plant is currently being converted to using natural gas in support of carbon-reduction objectives.
Power can be purchased on the open market if required.
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Electrical facilities include multiple main substations, several smaller substations throughout the Project area, and transmission lines.
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16.0    MARKET STUDIES AND CONTRACTS
16.1    Markets
NGM has established contracts and buyers for the gold bullion, copper concentrate and copper cathode products from the Nevada Operations, and has an internal marketing group that monitors markets for its key products. Together with public documents and analyst forecasts, these data support that there is a reasonable basis to assume that for the LOM plan, that the key products will be saleable at the assumed commodity pricing.
There are no agency relationships relevant to the marketing strategies used.
Product valuation is included in the economic analysis in Chapter 22, and is based on a combination of the metallurgical recovery, commodity pricing, and consideration of processing charges.
16.2    Commodity Price Forecasts
The operator of NGM, Barrick, sets metal price forecasts by reviewing the LOM for the operations, which is 10+ years, and setting the commodity price for that duration. The guidance is based on a combination of historical and current contract pricing, contract negotiations, knowledge of its key markets from a long operations production record, short-term versus long-term price forecasts prepared by the Barrick’s internal marketing group, public documents, and analyst forecasts when considering the long-term commodity price forecasts.
Higher metal prices are used for the mineral resource estimates to ensure the mineral reserves are a sub-set of, and not constrained by, the mineral resources, in accordance with industry-accepted practice.
The long-term commodity price forecasts are:
Mineral reserves:
Gold: US$1,200.00/oz;
Silver: US$16.50/oz;
Copper: US$2.75/lb;
Mineral resources:
Gold: US$1,500.00/oz;
Silver: US$20.50/oz
Copper: US$3.50/lb.
16.3    Contracts
NGM has contracts in place for the majority of the copper concentrate with smelters and various traders. The terms contained within the sales contract are typical of and consistent with standard industry practice and are like contracts for the supply of copper concentrate throughout the world.
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The contracts include industry benchmark terms for metal payables, treatment charges and refining charges for concentrates produced. Depending on the specific contract, the terms for the sale of the Project’s copper concentrate are either annually negotiated, benchmark-based treatment and refining charges, or a combination of annually negotiated terms and price sharing agreements. The differences between the individual contracts are generally in relative quantity of concentrates that are covered under annually-negotiated treatment and refining charges and that are covered under a price sharing formula.
Treatment charges assumed for estimation of mineral reserves are based on the blended rates of the existing contracts through the duration of the agreements. The formula used is sensitive to the underlying copper price and is consistent with long-term expectations for copper treatment and refining charges.
The Phoenix copper leach facility produces cathode copper which is sold to a trader who re-sells for product manufacturing. The terms contained within the sales contract are typical of and consistent with standard industry practice and are like contracts for the supply of copper cathode globally.
NGM’s bullion is sold on the spot market, by marketing experts retained in-house by NGM/Barrick. NGM provides Newmont with the date and number of ounces that will be credited to Newmont’s account, and invoices Newmont for how much NGM is owed, such that Newmont receives credits for the ounces (based on the JV interest) and Newmont pays NGM for the ounces. The terms contained within the sales contracts are typical and consistent with standard industry practice and are similar to contracts for the supply of bullion elsewhere in the world.
The largest in-place contracts other than for product sales cover items such as bulk commodities, operational and technical services, mining and process equipment, and administrative support services. Contracts are negotiated and renewed as needed.
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17.0    ENVIRONMENTAL STUDIES, PERMITTING, AND PLANS, NEGOTIATIONS, OR AGREEMENTS WITH LOCAL INDIVIDUALS OR GROUPS
17.1    Introduction
As part of its permitting requirements, NGM has submitted and received approval for numerous PoOs and Reclamation Plans for each area. NGM has additionally submitted and/or provided information to support Environmental Assessments (EA) or Environmental Impact Statements (EIS) for each area containing public lands. The additionally submitted information includes various baseline and supporting studies on various natural resources. These studies include, but are not limited to:
Vegetation surveys;
Soil surveys;
Wildlife surveys:
Threatened, endangered, and special status species surveys;
Waters of the US evaluations;
Waste rock characterization studies;
Groundwater modelling;
Pit lake geochemical studies;
Archaeological surveys;
Air quality modelling.
Existing operations were reviewed by the BLM and Nevada Division of Environmental Protection Bureau of Mining Regulation and Reclamation (NDEP–BMRR). BLM NEPA analysis under an EA or EIS can result in a Determination of NEPA Adequacy (DNA), Findings of No Significant Impacts (FONSI), or a Record of Decision (ROD). These determinations are issued by the BLM for those operations where PoOs contain public lands.
The PoOs are updated and amended, as necessary, to allow for continuation of mining or additional mine development.
17.2    Baseline and Supporting Studies
17.2.1    Current Operations
NGM manages a number of different environmental aspects during mining operations. The operating PoOs listed in Table 17-1 and/or reclamation areas encompass all of the mining facilities within the Nevada Operations.
These geographic boundaries define areas approved for disturbance by the BLM in the form of DNAs, EAs, and EISs, as well as Nevada State permits under NDEP including water pollution control, air and water quality, reclamation, closure permits, and other permits.
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EISs can require the implementation of mitigation plans due to potential identified impacts. Such plans can contain specific actions to be taken to mitigate potential impacts to riparian and wetland areas, springs and seeps, streams and rivers, aquatic habitat and fisheries, threatened, endangered, and candidate species, livestock grazing, terrestrial wildlife, soils, vegetation, visual resources, and recreation and wilderness.
17.2.2    Proposed Operations
The Goldrush project is situated in a culturally- and biologically sensitive area, with numerous cultural sites and within sage grouse habitat.
Major study areas in support of the planned mining operation include air quality, hazardous material and solid waste, noise, waste rock characterization, soils, biological resources, wildlife, special status species, visual and cultural resources, Native American Traditional Values, social and economic values, and environmental justice.
17.3    Environmental Considerations/Monitoring Programs
Each state and federal permit includes monitoring requirements. These requirements can include, but are not limited to:
Water Pollution Control Permit monitoring of the process facilities to ensure Waters of the State are not compromised (e.g., heap leach pads, TSFs, mills/autoclaves/roaster, and potentially-acid generating WRSFs);
Surface and groundwater are monitored under various permits to ensure no degradation of the water resource;
Reclamation and closure activity monitoring to ensure facilities are closed as planned and to prevent environmental degradation;
Rock blending, isolation, encapsulation and backfilling methods in order to minimize acid generation and leachate migration from waste rock that is potentially acid-generating;
Monitoring of dewatering and water discharge impacts to ensure regulatory requirements are met;
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Table 17-1:    Plans of Operations
PropertyPoO NameBLM Case File
CarlinArturoNVN-087946
CarlinBootstrapNVN-071087
CarlinCarlinNVN-070574
CarlinDeeNVN-071216
CarlinEmigrantNVN-078123
CarlinGenesis-BluestarNVN-070712
CarlinGold QuarryNVN-070550
CarlinGoldstrikeNVN-070708
CarlinLeevilleNVN-071251
CarlinRainNVN-070445
CortezCortezNVN-067575
Long CanyonLong CanyonNVN-091032
PhoenixPhoenixNVN-067930
Turquoise Ridge ComplexTurquoise RidgeNVN-64093
Turquoise Ridge ComplexTwin CreeksNVN-064094
Air emissions monitoring, including particulates, NOx, SOx, and mercury where appropriate.
Routine environmental monitoring takes place across the operations, including dust suppression, noise, arsenic, TSF seepage water, leak detection, as well as sample collection of drinking water, ground water, surface water, and monitoring of well water.
Various Water Pollution Control Permits (WPCPs), approved and administered by the NDEP–BMRR, require waste rock to be characterized for PAG and acid neutralizing potential and are reported to the NDEP–BMRR quarterly or semi-annually, as required by the WPCPs. Existing facilities will continue to be managed in accordance with the approved site specific WPCPs and Waste Rock Management Plans. Any new refractory ore stockpiles or WRSFs will be designed, constructed, and monitored in accordance with the guidance received from the NDEP–BMRR.
Refractory ore and waste materials are present at the Phoenix, Turquoise Ridge, Carlin, and Cortez Complexes. Design requirements include encapsulation of potentially acid generating materials inside waste rock facilities and engineered systems for the collection of low pH seepage from waste rock dumps and stockpiles and treatment of the seepage. Stockpile and waste rock permitting are included in Plan of Operations submissions to the BLM and in Water Pollution Control Permit applications to the State of Nevada Division of Environmental Protection.
Tailings are analyzed and reported as part of the WPCP requirements. Tailings impoundments are engineered structures requiring separate approval and strict monitoring and reporting requirements as regulated by the NDEP. The tailings facilities are also closely monitored and inspected for geotechnical stability by the State Division of Water Resources (DWR).
NGM has an integrated ISO 14001 certified environmental management system (EMS) that controls health and safety, and environmental risks. The EMSs are updated on an annual basis and audited every three years. Environmental incidents are noted in a register which forms part of the EMS. Causes and corrective actions are identified, and once completed, the incident is closed out.
These plans will be extended to Goldrush and Robertson as they become operational.
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17.4    Closure and Reclamation Considerations
17.4.1    Existing Operations
Initial closure planning is included within all proposals and reclamation plan documents during the permitting process. Closure planning is integrated with mine and reclamation planning to the extent practicable during active operations. Concurrent reclamation of lands as mining progresses is a primary consideration for NGM. Reclamation plans are regularly reviewed and revised at a minimum of every three years to ensure adequate financial assurances have been put in place for required reclamation activities. Approvals are required from both the BLM and NDEP for reclamation and closure plan amendments and bond adjustments.
Various mine facilities are located within the PoO boundaries on both private lands and the federal lands administered by the BLM. Only approved facility disturbance can be constructed within PoO boundaries. All PoO boundaries and private lands within the PoO are under the jurisdiction of the NDEP–BMRR.
The reclamation boundaries define limits of approved disturbance for mining within each PoO boundary. Approved financial assurances cover the reclamation liabilities of facilities associated with mining activity. Agency permit approval is contingent upon the placement of these financial assurances that are held by the Agencies (BLM and/or NDEP) prior to commencement of mining. They are the beneficiaries in the unlikely case that NGM files bankruptcy. Reclamation cost estimates are detailed in the reclamation plans for each plan area and facility. Additional financial assurances, in the form of a trust, may be required for long-term monitoring and maintenance costs estimated to occur after closure (i.e., long-term management of drain-down solution from heap leach pads). A Nevada industry-standard method or Standard Reclamation Cost Estimator (SRCE) model is used by NGM to calculate the liabilities.
In general, reclaimed mine sites must be left safe and stable at a minimum, with removal of all infrastructure and rehabilitation of all landforms. Groundwater quality around tailings storage facilities must meet license conditions.
NGM currently has posted approximately US$2.14 B in financial assurances in the form of letters of credit and surety bonds to cover mine closure costs. Additionally, there are several trusts associated with closure cost planning.
The economic analysis uses a closure cost assumption of US$0.9 B, which is the estimate of actual disturbance.
17.4.2    Proposed Operations
The Goldrush project will require development of a temporary closure plan, a tentative plan for permanent closure/interim closure plan, a plan of operations that includes a reclamation plan and reclamation surety estimate, and a plan for monitoring the post-closure stability of the site.
Additionally, at least two years prior to the initiation of closure, NGM must prepare and submit a final plan for permanent closure under terms of their water pollution control permit (WPCP) and NAC 445A.447. A financial surety must be provided in the form of a performance bond or other instrument suitable to construct, operate, and guarantee completion of reclamation and closure activities. A long-term funding mechanism is anticipated, based on existing mine activities in the
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Cortez District and elsewhere in the state. The BLM will generally require an estimate of long-term liabilities associated with the holding and monitoring of post-closure mine features. This calculation will include funds for identifiable post-closure contingencies. An estimate for this funding instrument will be developed in consultation with NGM, using existing operations as analogs and adjusting for predicted monitoring requirements.
17.5    Permitting
17.5.1    Existing Permits
All surface activities, including reclamation, comply with all applicable Federal and State laws and regulations. The fundamental requirement, implemented in 43 CFR 3809, is that all hard-rock mining under a PoO or Notice on the public lands must prevent unnecessary or undue degradation to the environment. The PoOs and any modifications to the approved PoOs must also meet the requirement to prevent unnecessary or undue degradation.
Mining of pits and associated disturbances are evaluated and approved by the BLM and the NDEP (Nevada Administrative Code (NAC) Chapter 445A and the Federal regulations 43 CFR 3809). The BLM studies environmental impacts associated with mining under NEPA.
As part of its permitting requirements, NGM has submitted PoOs and Reclamation Plans for each operation. NGM has submitted and/or provided information to support NEPA evaluation for each area containing public lands. The PoOs are updated and amended as necessary to allow for continuation of mining or additional mine development.
Reclamation requirements are regulated by the BLM and NDEP and can include items such as regrading waste rock disposal facilities and heap leach pads, removing and demolishing buildings and structures, regrading disturbed areas, removing and regrading stockpile areas, replacing salvaged growth media, revegetation, diversion and sediment control monitoring, and management of drain down from process facilities (e.g., heap leach pads and tailings). To the extent practicable, NGM attempts to perform reclamation concurrently with mining operations.
Permits pertain to environmental and safety obligations by mining companies, and for day-to-day operations compliance. These compliance permits cover areas such as air quality, surface and ground water quality, wastewater treatment, tailings storage, hazardous materials storage, land reclamation, and community relations. NGM also maintains a legal obligation register to track permitting and ensure on-going compliance. Permit applications and renewals are undertaken as required.
The Nevada Operations have the required permits to operate or will be applying for the permits as they are required for mine development.
As at 31 December, 2021, all material permits for the current operations were in compliance or were in the renewal process.
17.5.2    Additional Permits
The Goldrush project will need the permits and authorizations outlined in Table 17-2. This table assumes off-site transport of ore for processing at Goldstrike and Gold Quarry.
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Goldrush is going through NEPA review. This will result in completion of an Environmental Impact Statement which will be followed by Record of Decision from the BLM. The start of the NEPA process is completion of baseline studies and submission of a PoO to the BLM.
17.6    Social Considerations, Plans, Negotiations and Agreements
17.6.1    Current Operations
Nevada Gold Mines is one of the largest direct employers in the area and also generates significant indirect employment. Prior to the formation of NGM, Barrick had a robust community relations and social performance strategy and a dedicated team to execute on that strategy. This has continued under NGM. Stakeholder engagement is a primary pillar of that strategy and includes participation in local civic activities; city/town council and county commission meetings; serving on boards and committees; town hall meetings; and one-to-one engagement. From this engagement, NGM listens to, and partners with, local organizations to identify a social investment strategy. Education, health, economic development and cultural heritage are key areas for community investments. NGM has also partnered with local law enforcement on public safety initiatives and conservation groups on environmental conservation programs.
As part of the community affairs program, NGM engages with 10 tribal communities. Prior to the formation of NGM, Barrick worked with eight Western Shoshone communities, but the operational footprint of NGM includes traditional territories of two additional tribes, the Confederated Tribes of the Goshute Reservation and Ft. McDermitt Paiute and Shoshone Tribe. NGM initiated engagement with these two communities when the joint venture was formed. Engagement with partner tribes includes regularly-held meetings called “Dialogue Meetings”; tribal council meetings; community committees; one-to-one engagements and sponsorship of several community-driven initiatives. Through this engagement, NGM works with tribal councils to identify and support community priorities in programs aimed at improving community health and well-being, education attainment, cultural heritage preservation, and economic development.
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Table 17-2:    Major Permits and Approvals, Goldrush
Permit or ApprovalGranting Agency
Plan of Operations, EIS RODU.S. Department of the Interior, BLM
Reclamation PermitNDEP-BMRR
Historic Properties Treatment Plan (HPTP)
BLM and State Historic Preservation Office (SHPO)
Explosives PermitU.S. Department of the Treasury, Bureau of Alcohol, Tobacco, and Firearms
Review of jurisdictional determinations for CWA Section 404 permittingUS Army Corps of Engineers (USACE), Environmental Protection Agency (EPA)
Surface Disturbance Permit
Class II Operating Permit
Nevada (NV) Department of Conservation and Natural Resources (NV DCNR), NDEP, Bureau of Air Pollution Control, EPA
WPCPsNV DCNR, NDEP, BMRR
Approval to dispose of solid waste authorized at Cortez Sanitary Landfill (Class III Waiver)NV DCNR, NDEP, Bureau of Waste Management
EPA Identification Number from Cortez Mine will be utilizedNV DCNR, NDEP, Bureau of Waste Management
General Discharge Permit (stormwater)NDEP, Bureau of Water Pollution Control
Permit to Operate, NRS 519A.250Nevada State Minerals Commission, Division of Minerals
Status and production of all mining and exploration projects, NRS 519A.260Nevada State Minerals Commission, Division of Minerals
USFWS Avian Protection Plan/Take PermitUSFWS
Working in Waters PermitNV DCNR, NDEP, Bureau of Water Pollution Control
Water Rights Change in Point of Use and Point of Diversion, new appropriationsNV DCNR, NDWR
Hazardous Materials PermitNV Department of Public Safety-NV State Fire Marshall
Liquefied Petroleum GasNV Board for the Regulation of Liquefied Petroleum Gas
Solid and Universal Waste Management
(batteries, electric fluorescent lamps)
NV DCNR, NDEP, Bureau of Waste Management
Develop Obligation RegisterInternal NGM Requirement
17.6.2    Proposed Operations
The Cortez Complex, including the Goldrush project, operate on lands traditionally used by the Western Shoshone tribes and bands, and NGM makes efforts to demonstrate respect for indigenous cultural resources, environmental stewardship, and shared benefits to receive support from Western Shoshone communities. These efforts are reflected in the 2014 Collaborative Agreement between Barrick and the Western Shoshone tribes and bands, and the 2018 Programmatic Agreement governing the consultation process for exploration and mining activities potentially impacting cultural or historic resources. NGM’s Community Relations Department has organized a number of tours for members of the Western Shoshone Cultural Advisory Group and the Battle Mountain Band Tribal Elders, along with elected officials, to visit the Goldrush portals. Updates on the project are also provided at the Western Shoshone quarterly dialogue meetings. NGM’s Community Relations Department and Cortez District Management have regular meetings with the community of Pine Valley, Lander, Eureka and Humboldt County Commissioners and Crescent Valley Town Advisory Board to provide project updates.
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As the Goldrush project develops, NGM will hold public meetings (and advertise a local grievance mechanism according to the Grievance Management Procedure) if internal strategy deems appropriate so that citizens in the surrounding areas may come to learn more about the project and express their support or concerns. NGM may also share employment growth projections with local government and organizations if needed for local planning purposes.
17.7    Qualified Person’s Opinion on Adequacy of Current Plans to Address Issues
Based on the information provided to the QP by NGM (see Chapter 25), there are no material issues known to the QP. The Nevada Operations are mature mining operations and currently has the social license to operate within its local communities.
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18.0    CAPITAL AND OPERATING COSTS
18.1    Introduction
Capital and operating cost estimates are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
18.2    Capital Cost Estimates
18.2.1    Basis of Estimate
Capital costs are based on recent prices or operating data.
Capital costs include funding for infrastructure, pit dewatering, development drilling, and permitting as well as miscellaneous expenditures required to maintain production.
Mobile equipment re-build/replacement schedules and fixed asset replacement and refurbishment schedules are included.
Sustaining capital costs reflect current price trends.
18.2.2    Capital Cost Estimate Summary
The overall capital cost estimate for the LOM is US$2.6 B, as summarized in Table 18-1.
18.3    Operating Cost Estimates
18.3.1    Basis of Estimate
Operating costs are based on actual costs seen during operations and are projected through the LOM plan.
Historical costs are used as the basis for operating cost forecasts for supplies and services unless there are new contract terms for these items.
Labor and energy costs are based on budgeted rates applied to headcounts and energy consumption estimates.
18.3.2    Operating Cost Estimate Summary
Operating costs for the Nevada Operations are estimated at US$34.9 B, as summarized in Table 18-2.
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Table 18-1:    Capital Cost Estimate
AreaUnitValue
MineUS$ B1.3
ProcessUS$ B0.8
General and administrativeUS$ B0.2
Goldrush pre-productionUS$ B0.4
TotalUS$ B2.6
Note: Numbers have been rounded; totals may not sum due to rounding.
Table 18-2:    Operating Cost Estimate
ItemUnitsValue
MiningUS$B18.6
RehandleUS$B0.8
AutoclavesUS$B4.8
RoastersUS$B5.2
Oxide MillUS$B0.4
LeachUS$B0.6
G&AUS$B3.3
TransportUS$B1.1
TotalUS$B34.9
Note: Numbers have been rounded; totals may not sum due to rounding.
Average operating costs over the LOM include:
Mining (open pit and underground): US$10.47/t mined;
Autoclave costs: US$34.01/t processed;
Roaster costs: US$24.12/t processed;
Oxide mill costs: US$10.46/t processed;
Heap leach costs: US$3.53/t processed;
General and administrative costs (inclusive of transport costs): US$5.78/t processed.
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19.0    ECONOMIC ANALYSIS
19.1    Methodology Used
The financial model that supports the mineral reserve declaration is a standalone model that calculates annual cashflows based on scheduled ore production, assumed processing recoveries, metal sale prices, projected operating and capital costs and estimated taxes.
The financial analysis is based on an after-tax discount rate of 5%. All costs and prices are in unescalated “real” dollars. The currency used to document the cashflow is US$.
All costs are based on the 2022 budget. Revenue is calculated from the recoverable metals and long-term metal price and exchange rate forecasts.
19.2    Financial Model Parameters
The economic analysis is based on the metallurgical recovery predictions in Chapter 10.4, the mineral reserve estimates in Chapter 13, the mine plan discussed in Chapter 14, the commodity price forecasts in Chapter 16, closure cost estimates in Chapter 17.4, and the capital and operating costs outlined in Chapter 18. Royalties were summarized in Chapter 3.9.
Taxes assume a rate of 21%, the Nevada Net Proceeds Tax of 5%, and the Nevada Mining Education Tax (see Chapter 3.2.4).
The economic analysis is based on 100% equity financing and is reported on a 100% project ownership basis. The economic analysis assumes constant prices with no inflationary adjustments. Barrick owns a 61.5% JV interest, with Newmont owning the remaining 38.5% JV interest.
Within the NGM JV, copper sales are generally in the form of concentrate, which is sold to smelters for further treatment and refining, and cathode. Copper is sold in either concentrate or cathode form. These sales are to third party customers. Generally, if a secondary metal expected to be mined is significant to the NGM JV, co-product accounting is applied. When the NGM JV applies co-product accounting at an operation, revenue is recognized for each co-product metal sold, and shared costs applicable to sales are allocated based on the relative sales values of the co-product metals produced. Generally, if a secondary metal expected to be mined is not significant to the Joint Venture, by-product accounting is applied. As copper and silver production at each of the NGM operations is not significant to the NGM JV, production from copper and silver are accounted for as by-product sales. Revenues from by-product sales are credited by NGM and Barrick as a by-product credit.
For the purposes of showing a complete cashflow analysis for the Nevada Operations as a whole, silver was treated as a by-product credit.
19.3    Economic Analysis
The NPV5% is US$4.2 B. Due to the profile of the cashflow, considerations of payback and internal rate of return are not relevant.
A summary of the financial results is provided in Table 19-1. An annualized cashflow statement is provided in Table 19-2 to Table 19-4. In these tables, EBITDA = earnings before interest,
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taxes, depreciation and amortization. The active mining operation ceases in 2045. Closure costs are estimated to 2045.
19.4    Sensitivity Analysis
The sensitivity of the Project to changes in metal prices, grade, sustaining capital costs and operating cost assumptions was tested using a range of 20% above and below the base case values (Figure 19-1).
The Project is most sensitive to changes in the metal price, followed by operating cost changes and the least sensitive to capital cost changes. Grade is not shown, as the grade sensitivity mirrors the metal price sensitivity.
Table 19-1:    Cashflow Summary Table (100% basis)
ItemUnitValue
Metal prices
GoldUS$/oz1,200
CopperUS$/lb2.75
SilverUS$/oz16.5
Total ore
Gold tonnageM520
Gold gradeg/t3.00
Copper tonnageMt226
Copper grade%0.17
Silver tonnageMt169
Silver gradeg/t6.43
Gold ouncesMoz50
Copper poundsBlb0.80
Silver ouncesMoz35
Capital costsUS$B2.6
Operating cashflowUS$B34.2
Discount rate%5
Free cashflowUS$B5.9
Net present valueUS$B4.2
Note: Numbers have been rounded; totals may not sum due to rounding. Tonnes are metric tonnes. Barrick owns a 61.5% JV interest, with Newmont owning the remaining 38.5% JV interest. Table 19-1 contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbor created by such sections and other applicable laws. Please refer to the note regarding forward-looking information at the front of the Report. The cashflow is only intended to demonstrate the financial viability of the Project. Investors are cautioned that the above is based on a high-level mine plan and certain assumptions which may differ from Newmont’s long-term outlook or actual financial results, including, but not limited to commodity prices, escalation assumptions and other technical inputs. For example, Table 19-1 uses the price assumptions stated in the table, including a gold commodity price assumption of US$1,200/oz, which varies significantly from current gold prices and the assumptions that Newmont uses for its long-term guidance. Please be reminded that significant variation of metal prices, costs and other key assumptions may require modifications to mine plans, models, and prospects.
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Table 19-2:    Annualized Cashflow (2022–2030; 100% basis)
UnitsLOM202220232024202520262027202820292030
Total ore minedMt577.231.635.972.058.878.768.049.434.132.5
Waste minedMt1,201.7192.7208.5145.2174.2171.160.135.768.760.2
Ore tonnes treatedMt577.231.635.972.058.878.768.049.434.132.5
Contained goldMoz50.23.83.34.63.93.73.63.12.92.4
Contained copperMlb830.050.650.562.683.789.278.771.366.565.1
Revenue$B48.43.63.14.13.63.53.63.12.82.2
Costs applicable to sales$B-34.9-2.2-2.4-2.6-2.7-3.0-2.6-1.8-1.9-1.9
Other expenses$B-1.9-0.1-0.1-0.2-0.1-0.1-0.1-0.1-0.1-0.1
EBITDA$B11.61.20.61.30.80.30.91.20.80.2
Operating cashflow (after estimated taxes and other adjustments)$B8.50.90.51.00.70.30.71.00.60.2
Total capital$B-2.6-0.4-0.4-0.4-0.2-0.3-0.2-0.1-0.1-0.1
Free cashflow$B5.90.50.10.70.40.00.50.80.50.0
Table 19-3:    Annualized Cashflow (2031–2040; 100% basis)
Units2031203220332034203520362037203820392040
Total ore minedMt30.025.514.94.03.93.93.93.93.73.7
Waste minedMt42.213.811.01.61.61.51.61.61.51.5
Ore tonnes treatedMt30.025.514.94.03.93.93.93.93.73.7
Contained goldMoz2.02.11.71.41.41.31.11.21.31.2
Contained copperMlb56.455.252.847.50.00.00.00.00.00.0
Revenue$B2.12.01.61.31.31.31.21.31.31.3
Costs applicable to sales$B-1.8-1.8-1.3-0.9-0.9-0.8-0.9-0.9-0.9-0.8
Other expenses$B-0.1-0.1-0.1-0.1-0.1-0.10.0-0.1-0.1-0.1
EBITDA$B0.10.20.20.40.40.40.30.30.40.4
Operating cashflow (after estimated taxes and other adjustments)$B0.10.20.20.30.30.30.20.30.30.3
Total capital$B-0.1-0.1-0.10.00.00.00.00.00.00.0
Free cashflow$B0.00.10.10.30.30.30.20.30.30.3
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Table 19-4:    Annualized Cashflow (2041–2046; 100% basis)
Units204120422043204420452046
Total ore minedMt3.53.65.55.50.80.0
Waste minedMt1.41.52.22.20.30.0
Ore tonnes treatedMt3.53.65.55.50.80.0
Contained goldMoz1.31.30.90.60.10.0
Contained copperMlb0.00.00.00.00.00.0
Revenue$B1.31.30.90.60.10.0
Costs applicable to sales$B-0.8-0.8-0.6-0.5-0.20.0
Other expenses$B-0.1-0.10.00.00.00.0
EBITDA$B0.40.40.20.1-0.10.0
Operating cashflow (after estimated taxes and other adjustments)$B0.40.40.20.1-0.1-0.9
Total capital$B0.00.00.00.00.00.0
Free cashflow$B0.40.30.20.0-0.1-0.9
Note: Numbers have been rounded; totals may not sum due to rounding. Tonnes are metric tonnes. EBITDA = earnings before interest, taxes, depreciation and amortization. Barrick owns a 61.5% JV interest, with Newmont owning the remaining 38.5% JV interest. Table 19-2 contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended, which are intended to be covered by the safe harbor created by such sections and other applicable laws. Please refer to the note regarding forward-looking information at the front of the Report. The cashflow is only intended to demonstrate the financial viability of the Project. Investors are cautioned that the above is based on a high-level mine plan and certain assumptions which may differ from Newmont’s long-term outlook or actual financial results, including, but not limited to commodity prices, escalation assumptions and other technical inputs. For example, Table 19-2 uses the price assumptions stated in the table, including a gold commodity price assumption of US$1,200/oz, which varies significantly from current gold prices and the assumptions that Newmont uses for its long-term guidance. Please be reminded that significant variation of metal prices, costs and other key assumptions may require modifications to mine plans, models, and prospects.
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Figure 19-1:    NPV Sensitivity
image_75.jpg
Note: Figure prepared by Newmont, 2021. NPV = net present value.
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20.0    ADJACENT PROPERTIES
This Chapter is not relevant to this Report.
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21.0    OTHER RELEVANT DATA AND INFORMATION
This Chapter is not relevant to this Report.
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22.0    INTERPRETATION AND CONCLUSIONS
22.1    Introduction
The QP notes the following interpretations and conclusions, based on the review of data available for this Report.
22.2    Property Setting
The Nevada Operations are located in a portion of Nevada State that has seen mining activities for over 100 years, and modern-scale operations since the 1960s. As a result, local and regional infrastructure and the supply of goods available to support mining operations is well-established. Personnel with experience in mining-related activities are available in the district. There are excellent transportation routes that access northern Nevada.
There are no significant topographic or physiographic issues that would affect the Nevada Operations. Vegetation is typically sparse. The most common current land use is for livestock grazing.
Mining operations are conducted year-round.
22.3    Ownership
NGM is a JV between Barrick and Newmont. Barrick is the JV operator and has a 61.5% interest, with Newmont owning the remaining 38.5% interest.
22.4    Mineral Tenure, Surface Rights, Water Rights, Royalties and Agreements
The Nevada Operations currently includes 15 operations PoOs and eight exploration PoOs. The area includes private land (surface and minerals) owned or controlled by NGM, and land owned by the federal government that is administered by the BLM.
NGM provided a claims list, fee property list, and location plans for the PoOs. The areas in the claims tables reflect the staked claim area; the areas have not been modified for claim overlaps. In some instances, where the same claims are reported within two or more PoOs; the claims are included in the claims list for the individual PoO for completeness, but have been removed for area and claim number totaling purposes.
Within the operations PoO areas are 9,205 lode, millsite, placer and patented claims covering an area of approximately 163,214 acres. Within the exploration PoO areas are 2,180 lode, millsite, placer and patented claims covering an area of approximately 43,364 acres. Between the operations and the exploration PoOs, NGM holds a total of 11,385 claims covering an area of approximately 206,578 acres.
In addition, NGM holds a number of fee properties, within the operations and exploration PoOs. Collectively, these cover an area of approximately 78,620 acres.
On 11 March, 2019, Barrick and Newmont announced the formation of the NGM JV. Newmont, Barrick, and their respective affiliates that held properties in the AOI contributed to NGM the
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respective rights, titles and interests in, to, or under, all properties located in the AOI and any other assets, properties or rights located in Nevada. Newmont and Barrick excluded certain development and exploration properties that the companies held within the AOI from the JV; these included Newmont’s Fiberline and Mike projects, and Barrick’s Fourmile project. The JV has a mechanism for the potential contribution of the excluded properties to NGM in the future.
A number of agreements exist with federal, state, and third-party entities and these are monitored using a land management database.
NGM holds all necessary surface rights for the current mining operations. Additional surface rights will be required to support the Goldrush project envisaged in the LOM plan in this Report.
NGM currently maintains a combination of approximately 1,250 active surface and groundwater rights within 38 hydrographic basins. NGM holds all necessary water rights for the LOM plan envisaged in this Report.
There are numerous royalties that pertain to the active mines within the Nevada Operations. Royalty payments vary, as the payments depend upon actual tonnages mined, the amount of gold recovered from that mined material, the deposit being mined, the receiving entity, and the type of royalty. Active royalty payments are included in the LOM economic analysis.
22.5    Geology and Mineralization
The deposits that comprise the Nevada Operations are considered to be examples of Carlin-style carbonate-hosted disseminated gold–silver deposits and intrusion-related gold–copper–silver skarn deposits.
The geological understanding of the settings, lithologies, and structural and alteration controls on mineralization in the different zones is sufficient to support estimation of mineral resources and mineral reserves. The geological knowledge of the area is also considered sufficiently acceptable to reliably inform mine planning.
The mineralization style and setting are well understood and can support declaration of mineral resources and mineral reserves.
Exploration potential exists adjacent to many of the deposits, along strike and at depth along favorable mineralized structures and within the favorable host lithologies. NGM continues to actively explore in the immediate and near-mine areas.
Multiple opportunities exist in the district to expand known deposits and discover additional mineralization.
22.6    History
The Nevada Operations have over 55 years of active mining history, with modern mining operations commencing in 1965. Modern exploration activity by Newmont and Barrick and their predecessor companies, commenced in the late 1950s.
22.7    Exploration, Drilling, and Sampling
The exploration programs completed to date are appropriate for the style of the mineralization within the Nevada Operations area.
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Drill holes are oriented with an inclination to accommodate the steeply-dipping nature of the Ahafo deposits, resulting in an intersection generally representing 75–85% of true width. Drilling is orientated generally perpendicular to the strike of the orebodies. Local variations may be present to accommodate infrastructure constraints.
Sampling methods, sample preparation, analysis and security conducted prior to Newmont’s interest in the operations were in accordance with exploration practices and industry standards at the time the information was collected. Current NGM sampling methods are acceptable for mineral resource and mineral reserve estimation. Sample preparation, analysis and security for the NGM programs are currently performed in accordance with general industry standards.
The quantity and quality of the lithological, geotechnical, collar and down-hole survey data collected during the exploration and delineation drilling programs are sufficient to support mineral resource and mineral reserve estimation. The collected sample data adequately reflect deposit dimensions, true widths of mineralization, and the style of the deposits. Sampling is representative of the gold and, where relevant, copper grades in the deposits, reflecting areas of higher and lower grades.
Density measurements are considered to provide acceptable density values for use in mineral resource and mineral reserve estimation.
The sample preparation, analysis, quality control, and security procedures used by the Nevada Operations have changed over time to meet evolving industry practices. Practices at the time the information was collected were industry-standard, and frequently were industry-leading practices. The sample preparation, analysis, quality control, and security procedures are sufficient to provide reliable data to support estimation of mineral resources and mineral reserves.
The QA/QC programs adequately address issues of precision, accuracy and contamination. Modern drilling programs typically included blanks, duplicates and standard samples. QA/QC submission rates meet industry-accepted standards.
22.8    Data Verification
Validation checks are performed by NGM operations personnel on data used to support estimation comprise checks on surveys, collar coordinates, lithology data (cross-checking from photographs), and assay data. Errors noted are rectified in the database prior to data being flagged as approved for use in resource estimation.
Reviews performed by external consultants were undertaken in support of acquisitions, support of feasibility-level studies, and in support of technical reports, producing independent assessments of the database quality. No significant problems with the database, sampling protocols, flowsheets, check analysis program, or data storage were noted.
NGM considers that a reasonable level of verification has been completed, and that no material issues would have been left unidentified from the programs undertaken.
The QP requested that information, conclusions, and recommendations presented in the body of this Report be reviewed by Newmont staff as a further level of data verification. Feedback from the reviewers was incorporated into the Report as required.
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The QP has reviewed the reports and is of the opinion that the data verification programs completed on the data collected from the Project are consistent with industry best practices and that the database is sufficiently error-free to support the geological interpretations and mineral resource and mineral reserve estimation, and mine planning.
22.9    Metallurgical Testwork
Industry-standard studies were performed as part of process development and initial mill design. Subsequent production experience and focused investigations guided mill alterations and process changes. Testwork programs, both internal and external, continue to be performed to support current operations and potential improvements. From time to time, this may lead to requirements to adjust cut-off grades, modify the process flowsheet, or change reagent additions and plant parameters to meet concentrate quality, production, and economic targets.
Samples selected for testing were representative of the various types and styles of mineralization. Samples were selected from a range of depths within the deposit. Sufficient samples were taken so that tests were performed on sufficient sample mass.
Recovery factors estimated are based on appropriate metallurgical testwork, and are appropriate to the mineralization types and the selected process routes. Gold recovery is a function of the processing method (e.g., heap leaching, CIL, roasting, and arsenic concentration for refractory ore) and the lithology of the mineralization being processed. As applicable, recovery estimates include consideration of the head grade, cyanide-soluble gold to fire assay gold ratio, sulfide sulfur concentration, total organic carbon concentration, and silica concentration. Copper recovery models were derived from a statistical review of the metallurgical data and range in complexity from simple, fixed recoveries to complex, multi-variable equations. The following input variables were available as possible drivers of recovery: head grade, copper leach ore type, alteration type, formation, and various trace elements.
The mill throughput and associated recovery factors are considered appropriate to support mineral resource and mineral reserve estimation, and mine planning.
Depending upon the specific processing facility, several processing factors or deleterious elements could have an economic impact on extraction efficiency of a certain ore source, based either on the presence, absence, or concentration of the following constituents in the processing stream: organic carbon; sulfide sulfur; carbonate carbon; arsenic; mercury; antimony; and copper. However, under normal ore routing and blending practices at NGM where material from several sites may be processed at one facility, the above list of constituents is typically not a concern.
22.10    Mineral Resource Estimates
NGM has a set of protocols, internal controls, and guidelines in place to support the mineral resource estimation process.
All mineralogical information, exploration boreholes and background information were provided to the estimators by the geological staff at the mines or by exploration staff.
Mineral resources are reported using the mineral resource definitions set out in SK1300, and are reported exclusive of those mineral resources converted to mineral reserves. The reference
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point for the estimate is in situ. Mineral resources are reported on a 100% basis. Barrick owns a 61.5% JV interest, with Newmont owning the remaining 38.5% JV interest.
Factors that may affect the Mineral Resource estimate include: changes to long-term metal price assumptions; changes in local interpretations of mineralization geometry and continuity of mineralized zones; changes to geological and grade shape and geological and grade continuity assumptions; changes to input parameters used in the pit shells and stope outlines constraining the Mineral Resources; changes to the cut-off grades used to constrain the estimates; variations in geotechnical, mining, and processing recovery assumptions; and changes to environmental, permitting and social license assumptions.
22.11    Mineral Reserve Estimates
Mineral reserves were converted from measured and indicated mineral resources. Inferred mineral resources were set to waste.
All current mineral reserves will be exploited using open pit mining methods, underground mining methods, or are in stockpiles. Mineral reserves amenable to open pit mining methods were estimated assuming open pit methods with conventional methods for drilling, blasting, loading with hydraulic shovels and haulage by large trucks. Mineral reserves amenable to underground mining methods were estimated assuming conventional stoping methods. Mineral resources were converted to mineral reserves using a detailed mine plan, an engineering analysis, and consideration of appropriate modifying factors. Modifying factors include the consideration of dilution and ore losses, open pit and underground mining methods, metallurgical recoveries, permitting and infrastructure requirements.
Mineral reserves are reported using the mineral reserve definitions set out in SK1300. The reference point for the estimate is the point of delivery to the process facilities. Mineral reserves are reported on a 100% basis. Barrick owns a 61.5% JV interest, with Newmont owning the remaining 38.5% JV interest.
Factors that may affect the mineral reserve estimates include: changes to the gold price assumptions; changes in the metallurgical recovery factors; changes to the operating cut-off assumptions for mill feed or stockpile feed; changes to the input assumptions used to derive the open pit and stope outlines and the mine plan that is based on those open pit and stope designs; changes to operating, and capital assumptions used, including changes to input cost assumptions such as consumables, labor costs, royalty and taxation rates; variations in geotechnical, hydrogeological, dilution and mining assumptions; including changes to pit phase or stope designs as a result of changes to geotechnical, hydrogeological, and engineering data used; changes to the assumed permitting and regulatory environment under which the mine plan was developed; ability to maintain mining permits and/or surface rights; ability to permit the expanded TSF and obtain the operations certificate for current and future underground operations; ability to maintain social and environmental license to operate.
22.12    Mining Methods
Mining operations can be conducted year-round.
Open pit mining is conducted using conventional techniques and an Owner-operated conventional truck and shovel fleet. The open pit mine plans are appropriately developed to
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maximize mining efficiencies, based on the current knowledge of geotechnical, hydrological, mining and processing information on the Project.
Underground mining is currently conducted using conventional stoping or cut-and-fill methods, and conventional mechanized equipment. The underground mine plans are based on the current knowledge of geotechnical, hydrological, mining and processing information. At certain sites, adjustments to mining methods is in process to reflect rock mass conditions.
The LOM plan assumes 577.2 Mt of ore and 1,201.7 Mt of waste will be mined.
As part of day-to-day operations, NGM will continue to perform reviews of the mine plan and consider alternatives to, and variations within, the plan. Alternative scenarios and reviews may be based on ongoing or future mining considerations, evaluation of different potential input factors and assumptions, and corporate directives.
22.13    Recovery Methods
The process facilities designs were based on a combination of metallurgical testwork, previous study designs, previous operating experience. The designs are generally conventional to the gold industry and have no novel parameters.
The facilities will produce variations in recovery due to the day-to-day changes in ore type or combinations of ore type being processed. These variations are expected to trend to the forecast recovery value for monthly or longer reporting periods.
22.14    Infrastructure
The majority of the key infrastructure to support the mining activities envisaged in the LOM is in place. New infrastructure will be required to support proposed operations at Goldrush and Robertson. A third shaft is in progress at the Turquoise Ridge Complex.
A stockpiling strategy is practiced to defer lower-grade ores to the end of mine life.
There is sufficient capacity in the existing heap leach pads and planned heap leach pad expansions, existing WRSFs and planned WRSF expansions, and existing TSFs and planned TSF expansions for LOM planning purposes.
The current water sources, assuming similar climate conditions to those experienced by the operations in the past, will be sufficient for the LOM plan.
The current water management practices are expected to be applicable for the LOM plan.
The existing infrastructure, staff availability, existing power, water, and communications facilities, and the methods whereby goods are transported to the mine are all in place and well-established, and can support the estimation of mineral resources and mineral reserves. Requirements for additional infrastructure to support the proposed operations at Goldrush and Robertson are well understood.
Personnel commute from surrounding settlements.
Electrical power for the Carlin, Cortez, Turquoise Ridge, and Phoenix Complexes is obtained via TS Power Plant and from the Western 102 power plant (both of which are owned and operated
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by NGM) with transmission by NV Energy. Power for Gold Quarry, Long Canyon, and Goldrush is supplied via the Wells Rural Electric Power Company.
22.15    Market Studies
NGM has established contracts and buyers for the gold bullion, copper concentrate and copper cathode products from the Nevada Operations. Together with public documents and analyst forecasts, these data support that there is a reasonable basis to assume that for the LOM plan, that the key products will be saleable at the assumed commodity pricing.
Barrick, as operator of the NGM JV, provides the commodity price guidance. Higher metal prices are used for the mineral resource estimates to ensure the mineral reserves are a sub-set of, and not constrained by, the mineral resources, in accordance with industry-accepted practice.
NGM has contracts in place for the majority of the copper concentrate with smelters and various traders. The terms contained within the sales contract are typical of and consistent with standard industry practice and are like contracts for the supply of copper concentrate throughout the world. The Phoenix copper leach facility produces cathode copper which is sold to a trader who re-sells for product manufacturing. The terms contained within the sales contract are typical of and consistent with standard industry practice and are like contracts for the supply of copper cathode globally.
NGM’s bullion is sold on the spot market, by marketing experts retained in-house by NGM/Barrick. NGM provides Newmont with the date and number of ounces that will be credited to Newmont’s account, and invoices Newmont for how much NGM is owed, such that Newmont receives credits for the ounces (based on the JV interest) and Newmont pays NGM for the ounces. The terms contained within the sales contracts are typical and consistent with standard industry practice and are similar to contracts for the supply of bullion elsewhere in the world.
The largest in-place contracts other than for product sales cover items such as bulk commodities, operational and technical services, mining and process equipment, and administrative support services. Contracts are negotiated and renewed as needed.
22.16    Environmental, Permitting and Social Considerations
Baseline and supporting environmental studies were completed to assess both pre-existing and ongoing site environmental conditions, as well as to support decision-making processes during operations start-up. Characterization studies were completed for climate, air quality, hydrology and surface water quality, hydrogeology, flora, fauna, soils, agriculture and land use, and the socioeconomic environment.
Plans were developed and implemented to address aspects of operations such as waste and fugitive dust management, spill prevention and contingency planning, water management, and noise levels.
NGM currently has posted approximately US$2.14 B in financial assurances in the form of letters of credit and surety bonds to cover mine closure costs. Additionally, there are several trusts associated with closure cost planning.
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As part of its permitting requirements, NGM has submitted and received approval on numerous PoOs and Reclamation Plans for each area. NGM has submitted and/or provided information to support NEPA evaluation for each area containing public lands. The PoOs are updated and amended as necessary to allow for continuation of mining or additional mine development. The Nevada Operations have the required permits to operate or will be applying for the permits as they are required for mine development. Additional permits will be required to support planned operations at Goldrush with about 20 key permits required for Goldrush.
Nevada Gold Mines is one of the largest direct employers in the area and also generates significant indirect employment. Prior to the formation of NGM, Barrick had a robust community relations and social performance strategy and a dedicated team to execute on that strategy. This has continued under NGM. Stakeholder engagement is a primary pillar of that strategy and includes participation in local civic activities; city/town council and county commission meetings; serving on boards and committees; town hall meetings; and one-to-one engagement. From this engagement, NGM listens to, and partners with, local organizations to identify a social investment strategy.
As part of the community affairs program, NGM engages with 10 tribal communities. Engagement with partner tribes includes regularly-held meetings called “Dialogue Meetings”; tribal council meetings; community committees; one-to-one engagements and sponsorship of several community-driven initiatives. Through this engagement, NGM works with tribal councils to identify and support community priorities in programs aimed at improving community health and well-being, education attainment, cultural heritage preservation, and economic development.
The Cortez Complex, including the Goldrush project, operate on lands traditionally used by the Western Shoshone tribes and bands, and NGM makes efforts to demonstrate respect for indigenous cultural resources, environmental stewardship, and shared benefits to receive support from Western Shoshone communities.
As the Goldrush project develops, NGM will hold public meetings (and advertise a local grievance mechanism according to the Grievance Management Procedure) if internal strategy deems appropriate so that citizens in the surrounding areas may come to learn more about the project and express their support or concerns.
22.17    Capital Cost Estimates
Capital costs were based on recent prices or operating data and are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Capital costs included funding for infrastructure, pit dewatering, development drilling, and permitting as well as miscellaneous expenditures required to maintain production. Mobile equipment re-build/replacement schedules and fixed asset replacement and refurbishment schedules were included. Sustaining capital costs reflected current price trends.
The overall capital cost estimate for the LOM is US$2.6 B.
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22.18    Operating Cost Estimates
Operating costs were based on actual costs seen during operations and are projected through the LOM plan, and are at a minimum at a pre-feasibility level of confidence, having an accuracy level of ±25% and a contingency range not exceeding 15%.
Historical costs were used as the basis for operating cost forecasts for supplies and services unless there are new contract terms for these items. Labor and energy costs were based on budgeted rates applied to headcounts and energy consumption estimates.
The LOM operating costs are estimated at US$34.9 B. The average mining costs (open pit and underground) over the LOM are US$10.47/t mined, autoclave costs are US$34.01/t processed, roaster costs are US$24.12/t processed, oxide mill costs are US$10.46/t processed, heap leach costs are US$3.53/t processed, and general and administrative costs (inclusive of transport costs) are US$5.78/t processed.
22.19    Economic Analysis
The NPV5% is US$4.2 B on a 100% basis. Barrick owns a 61.5% JV interest, with Newmont owning the remaining 38.5% JV interest.
Due to the profile of the cashflow, considerations of payback and internal rate of return are not relevant.
22.20    Risks and Opportunities
Factors that may affect the mineral resource and mineral reserve estimates were identified in Chapter 11.13 and Chapter 12.9 respectively.
22.20.1    Risks
The risks associated with the Nevada Operations are generally those expected with open pit and underground mining operations and include the accuracy of the resource models, unexpected geological features that cause geotechnical issues, and/or operational impacts.
Other risks noted include:
Commodity price increases for key consumables such diesel, electricity, tires and chemicals would negatively impact the stated mineral reserves and mineral resources;
Labor cost increases or productivity decreases could also impact the stated mineral reserves and mineral resources, or impact the economic analysis that supports the mineral reserves;
Geotechnical and hydrological assumptions used in mine planning are based on historical performance, and to date historical performance has been a reasonable predictor of current conditions. Any changes to the geotechnical (seismicity) and hydrological assumptions could affect mine planning, affect capital cost estimates if any major rehabilitation is required due to a geotechnical or hydrological event, affect operating costs due to mitigation measures that may need to be imposed, and impact the economic analysis that supports the mineral reserve estimates;
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The mineral resource estimates are sensitive to metal prices. Lower metal prices require revisions to the mineral resource estimates;
The LOM plan assumes that new TSFs can be permitted based on envisaged timelines. If the permitting schedule is delayed, this could impact costs and proposed production;
Updated industry standards for TSFs may have an impact on the envisaged TSF costs;
The LOM plan assumes that ore is sent to the process facility that will provide optimal results (costs, metallurgical recoveries). Should, for operational reasons, a different process facility be selected, then higher operating costs and/or lower recoveries may result;
The LOM plan envisages blending of numerous ore sources at the various process facilities. Non-optimal blends could impact operating costs, plant throughputs, and metallurgical recoveries. There may be potential for exceedances on environmental monitoring limits if such blends are not well controlled;
Stockpiled materials can undergo degradation over time, and the metallurgical recoveries assumed for stockpiled materials may be lower than that assumed in the LOM plan;
Management of threatened and endangered species may delay permits and increase capital and/or operating costs. Although there are site-specific management plans, either planned or in place, if there is a major impact seen on the populations from mining activities, the environmental permits for the operations could be revised or even revoked. The social license to operate could also be impacted;
Regulatory approval of the Goldrush project is still pending, and the project is in the EIA process. If conditions are imposed by the regulators as a result of the process, this could impact the project schedule and cost estimates;
On-highway transport of ore or concentrate could be impacted by changes to regulations on the number of trucks that can be used;
Exceedances of permit conditions have historically occurred at certain of the process facilities. Should such exceedances recur, there could be social and regulatory impacts to operations, mine plans, and the forecast economic analyses;
Climate changes could impact operating costs and ability to operate;
The long-term reclamation and mitigation of the Nevada Operations are subject to assumptions as to closure timeframes and closure cost estimates. If these cannot be met, there is a risk to the costs and timing;
Newmont is the minority partner in the NGM JV and does not exercise day-to-day control over NGM’s operations;
Political risk from challenges to the current state or federal mining laws.
22.20.2    Opportunities
Opportunities include:
Conversion of some or all of the measured and indicated mineral resources currently reported exclusive of mineral reserves to mineral reserves, with appropriate supporting studies;
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Upgrade of some or all of the inferred mineral resources to higher-confidence categories, such that this higher-confidence material could potentially be converted to mineral reserve estimates;
Higher metal prices than forecast could present upside sales opportunities and potentially an increase in predicted Project economics;
NGM holds a significant ground package within the AOI that retains significant exploration potential:
Exploration potential around current and historical open pits;
Potential for new underground operations proximal to the current mineral resource and mineral reserve estimates, with the support of additional studies.
22.21    Conclusions
Under the assumptions presented in this Report, the Nevada Operations have a positive cashflow, and mineral reserve estimates can be supported.
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23.0    RECOMMENDATIONS
As the Nevada Operations are a complex of operating mines, the QP has no material recommendations to make.
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24.0    REFERENCES
24.1    Bibliography
Altman, K.A., Bergen, R.D., Collins, S.E., Moore, C.M., and Valliant, W.W., 2016: Technical Report on the Cortez Operations, State of Nevada, U.S.A., NI 43-101 report; report prepared by Roscoe Postle Associates Inc. for Barrick Gold Corporation, effective date March 21, 2016
Bergen, R.D., Gareau, M.B., and Altman, K.A., 2012: Technical Report On The Cortez Joint Venture Operations, Lander And Eureka Counties, State Of Nevada, U.S.A. NI 43-101: report prepared by Roscoe Postle Associates Inc. for Barrick Gold Corporation, effective date March 16, 2012.
Bolin, L., Fiddes, C., Yopps, S.W., 2020: Technical Report On The Turquoise Ridge Complex, State Of Nevada, USA NI 43-101 Report: Prepared For Newmont Corporation And Barrick Gold Corporation By Nevada Gold Mines LLC effective date December 31, 2019.
Cox., J.J., Valliant, W.W., Altman, K.A., Geusebroek, P.A., 2018: Technical Report On The Turquoise Ridge Mine, State Of Nevada, U.S.A. NI 43-101 Report: report prepared by Roscoe Postle Associates Inc. for Barrick Gold Corporation, effective date March 19, 2018.
Cox., J.J., Geusebroek, P.A., Valliant, W.W., Haggarty, S., 2019: Technical Report On The Goldstrike Mine, Eureka And Elko Counties, State Of Nevada, USA NI 43-101 Report: report prepared by Roscoe Postle Associates Inc. for Barrick Gold Corporation, effective date March 22, 2019.
Doe, D., 2018: Carlin Operations, Nevada USA, NI 43-101 Report: report prepared for Newmont Mining Corporation, effective date 31 December, 2018.
Evans, L., Collins, S.E., Cox, J.J., Krutzelmann, H., 2017: Technical Report On The Goldstrike Mine, Eureka And Elko Counties, Nevada U.S.A. NI 43-101 Report: report prepared by Roscoe Postle Associates Inc. for Barrick Gold Corporation, effective date April 25, 2017.
Fiddes, C., Olcott, J., Bolin, C.L. and Yopps, S.W., 2020: Technical Report On The Carlin Complex, Eureka And Elko Counties, State Of Nevada, USA: report prepared for Barrick Gold Corporation and Newmont Corporation by Nevada Gold Mines LLC, effective date March 25, 2020.
Gustin, M.M. and Smith, M., 2009: Technical Report on the Long Canyon Project, Elko County, Nevada, USA: report prepared by Mine Development Associates for Fronteer Development Group Inc., effective date April 17, 2009.
Heitt, D.G., 2002: Newmont’s Reserve History on the Carlin Trend, 1965–2001: in Thompson, T.B., Teal, L., and Meeuwig, R.O., eds, Gold Deposits of the Carlin Trend, Nevada Bureau of Mines and Geology Bulletin 111, pp. 35–45.
Hofstra A.H., Leventhal J.S., Northrop H.R., Landis G.P., Rye R.O., Birak D.J., and Dahl A.R., 1991: Genesis Of Sediment-Hosted Disseminated Gold Deposits By Fluid Mixing And Sulfidization: Chemical-Reaction-Path Modeling Of Ore-Depositional Processes Documented In The Jerritt Canyon District, Nevada: Geology 19:36–40.
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Hotz, P.E., 1963: Geology and Mineral Deposits of the Osgood Mountains Quadrangle, Humboldt County, Nevada, Preston E. Hotz and Ronald Wilden. Washington, U.S. Government Printing Office, 1963.
Jory, J., 2002: Stratigraphy and Host Rock Controls of Gold Deposits of the Northern Carlin Trend: in Thompson, T.B., Teal, L., and Meeuwig, R.O., eds, Gold Deposits of the Carlin Trend, Nevada Bureau of Mines and Geology Bulletin 111, pp. 20–34.
Miranda, H., Altman, K.A., Geusebroek, P.A., Valliant, W.W., Bergen, R.D., 2019: Technical Report On The Cortez Joint Venture Operations, Lander And Eureka Counties, State Of Nevada, U.S.A. NI 43-101 Report: report prepared by Roscoe Postle Associates Inc. for Barrick Gold Corporation, March 22, 2019.
Moore, C.M., Bergen, R.D., Valliant, W.W., Collins, S.E., Altman, K.A., 2012: Technical Report On The Goldstrike Mine, Eureka & Elko Counties, State Of Nevada, U.S.A., NI 43-101 Report: report prepared by Roscoe Postle Associates Inc. for Barrick Gold Corporation, effective date March 16, 2012.
Nevada Gold Mines, 2020: Qualified Persons Summary to Support Year End Reserves and Resources, Cortez; report prepared year-end 31 December, 2020.
Nevada Gold Mines, 2020: Qualified Persons Summary to Support Year End Reserves and Resources, Goldrush; report prepared year-end 31 December, 2020.
Nevada Gold Mines, 2020: Qualified Persons Summary to Support Year End Reserves and Resources, Carlin Complex; report prepared year-end 31 December, 2020.
Nevada Gold Mines, 2020: Qualified Persons Summary to Support Year End Reserves and Resources, Arturo South; report prepared year-end 31 December, 2020.
Nevada Gold Mines, 2020: Qualified Persons Summary to Support Year End Reserves and Resources, Long Canyon; report prepared year-end 31 December, 2020.
Nevada Gold Mines, 2020: Qualified Persons Summary to Support Year End Reserves and Resources, Phoenix; report prepared year-end 31 December, 2020.
Nevada Gold Mines, 2021: Goldrush Underground Mine Feasibility Study: draft August, 2021.
Nevada Gold Mines, 2021: Goldrush Underground Mine Feasibility Study: draft October, 2021.
Papke, K.G., and Davis, D.A., 2019: Mining Claim Procedures for Nevada Prospectors and Miners, Fifth Edition: Nevada Bureau of Mines and Geology, Mackay School of Mines, 2019 update, 58 p.
Rhys, D., Valli, F., Burgess, R., Heitt, D., Griesel, G. and Hart, K., 2015: Controls of Fault and Fold Geometry on the Distribution of Gold Mineralization on the Carlin Trend: in Prennell, W.M. and Garside, L.J., eds, New Concepts and Discoveries. Geological Society of Nevada 2015 Symposium. Vol. Geological Society of Nevada Reno/Sparks, NV, p. 333–389.
Smith, M.T., Rhys, D., Ross, K., Lee, C., and Gray, J.N., 2013: The Long Canyon Deposit: Anatomy of a New Off-Trend Sedimentary Rock-Hosted Gold Discovery in Northeastern Nevada: Economic Geology, vol. 108(5), pp. 1119–1145.
Stewart, J.H., 1980: Geology of Nevada: a discussion to accompany the Geologic Map of Nevada: Nevada Bureau of Mines and Geology Special Publication, No. 4, 136 p.
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Teal, L., and Jackson, M., 2002: Geologic Overview of the Carlin Trend Gold Deposits: in Thompson T.B., Teal, L., and Meeuwig, R.O., eds., Gold Deposits of the Carlin Trend: Nevada Bureau of Mines and Geology, Bulletin 111, p. 9–19.
24.2    Abbreviations
Abbreviation/SymbolTerm
AALAmerican Assay Laboratory
ALSALS Chemex
BLMUS Bureau of Land Management
BMRRBureau of Mining Regulation and Reclamation
CAIorganic carbon
CICcarbon-in-columns
CRFcapital recovery factor
CSAMTcontrolled-source audio-frequency telluromagnetics
DNADetermination of NEPA Adequacy
DWRState Division of Water Resources
EAEnvironmental Assessments
EIAEnvironmental Impact Assessment
EISEnvironmental Impact Statement
ElliotElliot Geophysical Laboratories
EMelectromagnetics
FAfire assay
FONSIFindings of No Significant Impacts
G&Ageneral and administrative
GPSglobal positioning system
GSIgeological strength index
ICPinductively coupled plasma
ICP AESinductively coupled plasma–atomic emission spectroscopy
ICP-MSinductively coupled plasma–mass spectrometry
ID2inverse distance to the power of two
ID3inverse distance to the power of three
ID5inverse distance to the power of five
IKindicator kriging
IPinduced polarization
IRMRin situ rock mass rating
LGLerchs–Grossmann
LIKLocal indicator kriging
LOMlife-of-mine
MSOMineable Stope Optimizer
MTmagnetotellurics
NACNevada Administrative Code
NaCNcyanide
NALNorth Area Leach pads
NDEPNevada Division of Environmental Protection
NEPANational Environmental Policy Act
NewmontNewmont Mining Corporation
NEXNorth East Extension
NNnearest neighbor
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Abbreviation/SymbolTerm
OKordinary kriging
PAGpotentially acid-generating
PoOPlan of Operations
QA/QCquality assurance and quality control
QPQualified Person
RCreverse circulation
RILresin-in-leach
RMRrock mass rating
RODRecord of Decision
ROMrun-of-mine
RQDrock quality description
SAGsemi-autogenous grind
SALSouth Area leach pads
SdrmSilurian Roberts Mountain
SDrmSiluro-Devonian Roberts Mountains Formation
SMESociety for Mining, Metallurgy and Exploration
SPself-potential
SRCEStandard Reclamation Cost Estimator
SRMstandard reference materials
SX/EWsolvent extraction and electrowinning
TSFtailing storage facility
USUnited States
USGSUS Geological Survey
WPCPswater pollution control permits
WRSFwaste rock storage facilities
XRDX-ray diffraction
XRFX-ray fluorescence
ZongeZonge Engineering
24.3    Glossary of Terms
Term
Definition
advanced argillic alteration
Consists of kaolinite + quartz + hematite + limonite. feldspars leached and altered to sericite. The presence of this assemblage suggests low pH (highly acidic) conditions. At higher temperatures, the mineral pyrophyllite (white mica) forms in place of kaolinite
alluviumUnconsolidated terrestrial sediment composed of sorted or unsorted sand, gravel, and clay that has been deposited by water.
aquiferA geologic formation capable of transmitting significant quantities of groundwater under normal hydraulic gradients.
argillic alterationIntroduces any one of a wide variety of clay minerals, including kaolinite, smectite and illite. Argillic alteration is generally a low temperature event, and some may occur in atmospheric conditions
autoclave
A special reaction vessel designed for high pressure and temperature hydrometallurgical reactions, for example in the treatment of refractory ores
ball millA piece of milling equipment used to grind ore into small particles. It is a cylindrical shaped steel container filled with steel balls into which crushed ore is fed. The ball mill is rotated causing the balls themselves to cascade, which in turn grinds the ore.
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Term
Definition
Bond work index
A measure of the energy required to break an ore to a nominal product size, determined in laboratory testing, and used to calculate the required power in a grinding circuit design.
bullionUnrefined gold and/or silver mixtures that have been melted and cast into a bar or ingot.
carbon-in-columnA method of recovering gold and silver from rich solution from the heap leaching process by adsorption of the precious metals onto fine carbon suspended by up-flow of solution through a tank.
carbon-in-leachA method of recovering gold and silver from fine ground ore by simultaneous dissolution and adsorption of the precious metals onto fine carbon in an agitated tank of ore solids/solution slurry. The carbon flows counter currently to the head of the leaching circuit.
carbonaceousContaining graphitic or hydrocarbon species, e.g. in an ore or concentrate; such materials generally present some challenge in processing, e.g. preg-robbing characteristics.
comminution/crushing/grindingCrushing and/or grinding of ore by impact and abrasion. Usually, the word “crushing” is used for dry methods and “grinding” for wet methods. Also, “crushing” usually denotes reducing the size of coarse rock while “grinding” usually refers to the reduction of the fine sizes.
concentrateThe concentrate is the valuable product from mineral processing, as opposed to the tailing, which contains the waste minerals. The concentrate represents a smaller volume than the original ore
cut-and-fillCut-and-fill stoping is a preferred method for high-grade ore bodies with a steep dip size or irregular shape or vein structure. It is also useful for deposits that have weak walls as the fill supports the slope walls and provides a platform for when the next slice is cut.
cut-off gradeThe grade (i.e., the concentration of metal or mineral in rock) that determines the destination of the material during mining. For purposes of establishing “prospects of economic extraction,” the cut-off grade is the grade that distinguishes material deemed to have no economic value (it will not be mined in underground mining or if mined in surface mining, its destination will be the waste dump) from material deemed to have economic value (its ultimate destination during mining will be a processing facility). Other terms used in similar fashion as cut-off grade include net smelter return, pay limit, and break-even stripping ratio.
cyanidationA method of extracting gold or silver by dissolving it in a weak solution of sodium cyanide.
data verificationThe process of confirming that data has been generated with proper procedures, has been accurately transcribed from the original source and is suitable to be used for mineral resource and mineral reserve estimation
declineA sloping underground opening for machine access from level to level or from the surface. Also called a ramp.
densityThe mass per unit volume of a substance, commonly expressed in grams/ cubic centimeter.
depletionThe decrease in quantity of ore in a deposit or property resulting from extraction or production.
developmentOften refers to the construction of a new mine or; Is the underground work carried out for the purpose of reaching and opening up a mineral deposit. It includes shaft sinking, cross-cutting, drifting and raising.
development propertya property that is being prepared for mineral production or a material expansion of current production, and for which economic viability has been demonstrated by a pre-feasibility or feasibility study.
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Term
Definition
dilutionWaste of low-grade rock which is unavoidably removed along with the ore in the mining process.
driftA horizontal mining passage underground. A drift usually follows the ore vein, as distinguished from a crosscut, which intersects it.
easement
Areas of land owned by the property owner, but in which other parties, such as utility companies, may have limited rights granted for a specific purpose.
electrowinning.The removal of precious metals from solution by the passage of current through an electrowinning cell. A direct current supply is connected to the anode and cathode. As current passes through the cell, metal is deposited on the cathode. When sufficient metal has been deposited on the cathode, it is removed from the cell and the sludge rinsed off the plate and dried for further treatment.
elutionRecovery of the gold from the activated carbon into solution before zinc precipitation or electro-winning.
EMGeophysical method, electromagnetic system, measures the earth's response to electromagnetic signals transmitted by an induction coil
encumbrance
An interest or partial right in real property which diminished the value of ownership, but does not prevent the transfer of ownership. Mortgages, taxes and judgements are encumbrances known as liens. Restrictions, easements, and reservations are also encumbrances, although not liens.
feasibility study
A feasibility study is a comprehensive technical and economic study of the selected development option for a mineral project, which includes detailed assessments of all applicable modifying factors, as defined by this section, together with any other relevant operational factors, and detailed financial analysis that are necessary to demonstrate, at the time of reporting, that extraction is economically viable. The results of the study may serve as the basis for a final decision by a proponent or financial institution to proceed with, or finance, the development of the project.
A feasibility study is more comprehensive, and with a higher degree of accuracy, than a pre-feasibility study. It must contain mining, infrastructure, and process designs completed with sufficient rigor to serve as the basis for an investment decision or to support project financing.
flotationSeparation of minerals based on the interfacial chemistry of the mineral particles in solution. Reagents are added to the ore slurry to render the surface of selected minerals hydrophobic. Air bubbles are introduced to which the hydrophobic minerals attach. The selected minerals are levitated to the top of the flotation machine by their attachment to the bubbles and into a froth product, called the “flotation concentrate.” If this froth carries more than one mineral as a designated main constituent, it is called a “bulk float”. If it is selective to one constituent of the ore, where more than one will be floated, it is a “differential” float.
flowsheetThe sequence of operations, step by step, by which ore is treated in a milling, concentration, or smelting process.
footwallThe wall or rock on the underside of a vein or ore structure.
frotherA type of flotation reagent which, when dissolved in water, imparts to it the ability to form a stable froth
gangueThe fraction of ore rejected as tailing in a separating process. It is usually the valueless portion, but may have some secondary commercial use
gravity separationExploitation of differences in the densities of particles to achieve separation. Machines utilizing gravity separation include jigs and shaking tables.
hanging wallThe wall or rock on the upper or top side of a vein or ore deposit.
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Term
Definition
heap leachingA process whereby valuable metals, usually gold and silver, are leached from a heap or pad of crushed ore by leaching solutions percolating down through the heap and collected from a sloping, impermeable liner below the pad.
hydrometallurgyA type of extractive metallurgy utilizing aqueous solutions/solvents to extract the metal value from an ore or concentrate. Leaching is the predominant type of hydrometallurgy.
indicated mineral resourceAn indicated mineral resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of adequate geological evidence and sampling. The term adequate geological evidence means evidence that is sufficient to establish geological and grade or quality continuity with reasonable certainty. The level of geological certainty associated with an indicated mineral resource is sufficient to allow a qualified person to apply modifying factors in sufficient detail to support mine planning and evaluation of the economic viability of the deposit.
inferred mineral resource
An inferred mineral resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of limited geological evidence and sampling. The term limited geological evidence means evidence that is only sufficient to establish that geological and grade or quality continuity is more likely than not. The level of geological uncertainty associated with an inferred mineral resource is too high to apply relevant technical and economic factors likely to influence the prospects of economic extraction in a manner useful for evaluation of economic viability.
A qualified person must have a reasonable expectation that the majority of inferred mineral resources could be upgraded to indicated or measured mineral resources with continued exploration; and should be able to defend the basis of this expectation before his or her peers.
initial assessmentAn initial assessment is a preliminary technical and economic study of the economic potential of all or parts of mineralization to support the disclosure of mineral resources. The initial assessment must be prepared by a qualified person and must include appropriate assessments of reasonably assumed technical and economic factors, together with any other relevant operational factors, that are necessary to demonstrate at the time of reporting that there are reasonable prospects for economic extraction. An initial assessment is required for disclosure of mineral resources but cannot be used as the basis for disclosure of mineral reserves
internal rate of return (IRR)The rate of return at which the Net Present Value of a project is zero; the rate at which the present value of cash inflows is equal to the present value of the cash outflows.
IPGeophysical method, induced polarization; used to directly detect scattered primary sulfide mineralization. Most metal sulfides produce IP effects, e.g. chalcopyrite, bornite, chalcocite, pyrite, pyrrhotite
Knelson concentratora high-speed centrifuge that combines centrifugally enhanced gravitational force with a patented fluidization process to recover precious metals
life of mine (LOM)Number of years that the operation is planning to mine and treat ore, and is taken from the current mine plan based on the current evaluation of ore reserves.
lithogeochemistryThe chemistry of rocks within the lithosphere, such as rock, lake, stream, and soil sediments
lixiviantA leach liquor used to dissolve a constituent in an ore, for example a cyanide solution used to dissolve gold.
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Term
Definition
long-hole stopingLong-hole sublevel stoping, often referred to as sublevel open stoping and blast hole stoping is a commonly-used method in large-scale mining. It is primarily used for large ore bodies with a steep dip, regular shape, and defined ore bodies. It is used when the ore body is narrow in width (20–100 ft)
long-hole stope retreatSimilar mining method to long-hole stoping, except that the long axis of the stope is along (or parallel) to the strike of the orebody.
magnetic separationUse of permanent or electro-magnets to remove relatively strong ferromagnetic particles from para- and dia-magnetic ores.
measured mineral resourceA measured mineral resource is that part of a mineral resource for which quantity and grade or quality are estimated on the basis of conclusive geological evidence and sampling. The term conclusive geological evidence means evidence that is sufficient to test and confirm geological and grade or quality continuity. The level of geological certainty associated with a measured mineral resource is sufficient to allow a qualified person to apply modifying factors, as defined in this section, in sufficient detail to support detailed mine planning and final evaluation of the economic viability of the deposit.
mergerA voluntary combination of two or more companies whereby both stocks are merged into one.
millIncludes any ore mill, sampling works, concentration, and any crushing, grinding, or screening plant used at, and in connection with, an excavation or mine.
mineral reserve
A mineral reserve is an estimate of tonnage and grade or quality of indicated and measured mineral resources that, in the opinion of the qualified person, can be the basis of an economically viable project. More specifically, it is the economically mineable part of a measured or indicated mineral resource, which includes diluting materials and allowances for losses that may occur when the material is mined or extracted.
The determination that part of a measured or indicated mineral resource is economically mineable must be based on a preliminary feasibility (pre-feasibility) or feasibility study, as defined by this section, conducted by a qualified person applying the modifying factors to indicated or measured mineral resources. Such study must demonstrate that, at the time of reporting, extraction of the mineral reserve is economically viable under reasonable investment and market assumptions. The study must establish a life of mine plan that is technically achievable and economically viable, which will be the basis of determining the mineral reserve.
The term economically viable means that the qualified person has determined, using a discounted cashflow analysis, or has otherwise analytically determined, that extraction of the mineral reserve is economically viable under reasonable investment and market assumptions.
The term investment and market assumptions includes all assumptions made about the prices, exchange rates, interest and discount rates, sales volumes, and costs that are necessary to determine the economic viability of the mineral reserves. The qualified person must use a price for each commodity that provides a reasonable basis for establishing that the project is economically viable.
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Term
Definition
mineral resource
A mineral resource is a concentration or occurrence of material of economic interest in or on the Earth’s crust in such form, grade or quality, and quantity that there are reasonable prospects for economic extraction.
The term material of economic interest includes mineralization, including dumps and tailings, mineral brines, and other resources extracted on or within the earth’s crust. It does not include oil and gas resources as defined in Regulation S-X (§210.4-10(a)(16)(D) of this chapter), gases (e.g., helium and carbon dioxide), geothermal fields, and water.
When determining the existence of a mineral resource, a qualified person, as defined by this section, must be able to estimate or interpret the location, quantity, grade or quality continuity, and other geological characteristics of the mineral resource from specific geological evidence and knowledge, including sampling; and conclude that there are reasonable prospects for economic extraction of the mineral resource based on an initial assessment, as defined in this section, that he or she conducts by qualitatively applying relevant technical and economic factors likely to influence the prospect of economic extraction.
mining claimA description by boundaries of real property in which metal ore and/or minerals may be located.
modifying factorsThe factors that a qualified person must apply to indicated and measured mineral resources and then evaluate in order to establish the economic viability of mineral reserves. A qualified person must apply and evaluate modifying factors to convert measured and indicated mineral resources to proven and probable mineral reserves. These factors include, but are not restricted to: mining; processing; metallurgical; infrastructure; economic; marketing; legal; environmental compliance; plans, negotiations, or agreements with local individuals or groups; and governmental factors. The number, type and specific characteristics of the modifying factors applied will necessarily be a function of and depend upon the mineral, mine, property, or project.
net present value (NPV)The present value of the difference between the future cashflows associated with a project and the investment required for acquiring the project. Aggregate of future net cashflows discounted back to a common base date, usually the present. NPV is an indicator of how much value an investment or project adds to a company.
net smelter return (NSR)A defined percentage of the gross revenue from a resource extraction operation, less a proportionate share of transportation, insurance, and processing costs.
open pitA mine that is entirely on the surface. Also referred to as open-cut or open-cast mine.
orogenyA process in which a section of the earth's crust is folded and deformed by lateral compression to form a mountain range
ounce (oz) (troy)Used in imperial statistics. A kilogram is equal to 32.1507 ounces. A troy ounce is equal to 31.1035 grams.
overburdenMaterial of any nature, consolidated or unconsolidated, that overlies a deposit of ore that is to be mined.
overhand drift and fillThe orebody is initially mined using a horizontal slice. The mined-out slice is then backfilled to provide additional support for the country rock surrounding the stope. The backfilled material forms the base for executing the next, upper slice. In effect, in overhand cut-and-fill, the ore lies above the working area and the floor is backfill.
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Term
Definition
penalty elements
Elements that when recovered to a flotation concentrate, attract a penalty payment from the smelting customer. This is because those elements are deleterious, and cause quality, environmental or cost issues for the smelter. Includes elements such as, Hg and Pb.
phyllic alterationMinerals include quartz–sericite–pyrite
plantA group of buildings, and especially to their contained equipment, in which a process or function is carried out; on a mine it will include warehouses, hoisting equipment, compressors, repair shops, offices, mill or concentrator.
portalThe surface entrance to a tunnel or adit
potassic alterationA relatively high temperature type of alteration which results from potassium enrichment. Characterized by biotite, K-feldspar, adularia.
preliminary feasibility study, pre-feasibility study
A preliminary feasibility study (prefeasibility study) is a comprehensive study of a range of options for the technical and economic viability of a mineral project that has advanced to a stage where a qualified person has determined (in the case of underground mining) a preferred mining method, or (in the case of surface mining) a pit configuration, and in all cases has determined an effective method of mineral processing and an effective plan to sell the product.
A pre-feasibility study includes a financial analysis based on reasonable assumptions, based on appropriate testing, about the modifying factors and the evaluation of any other relevant factors that are sufficient for a qualified person to determine if all or part of the indicated and measured mineral resources may be converted to mineral reserves at the time of reporting. The financial analysis must have the level of detail necessary to demonstrate, at the time of reporting, that extraction is economically viable
probable mineral reserveA probable mineral reserve is the economically mineable part of an indicated and, in some cases, a measured mineral resource. For a probable mineral reserve, the qualified person’s confidence in the results obtained from the application of the modifying factors and in the estimates of tonnage and grade or quality is lower than what is sufficient for a classification as a proven mineral reserve, but is still sufficient to demonstrate that, at the time of reporting, extraction of the mineral reserve is economically viable under reasonable investment and market assumptions. The lower level of confidence is due to higher geologic uncertainty when the qualified person converts an indicated mineral resource to a probable reserve or higher risk in the results of the application of modifying factors at the time when the qualified person converts a measured mineral resource to a probable mineral reserve. A qualified person must classify a measured mineral resource as a probable mineral reserve when his or her confidence in the results obtained from the application of the modifying factors to the measured mineral resource is lower than what is sufficient for a proven mineral reserve.
propylitic alterationCharacteristic greenish color. Minerals include chlorite, actinolite and epidote. Typically contains the assemblage quartz–chlorite–carbonate
proven mineral reserveA proven mineral reserve is the economically mineable part of a measured mineral resource. For a proven mineral reserve, the qualified person has a high degree of confidence in the results obtained from the application of the modifying factors and in the estimates of tonnage and grade or quality. A proven mineral reserve can only result from conversion of a measured mineral resource.
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Term
Definition
qualified person
A qualified person is an individual who is a mineral industry professional with at least five years of relevant experience in the type of mineralization and type of deposit under consideration and in the specific type of activity that person is undertaking on behalf of the registrant; and an eligible member or licensee in good standing of a recognized professional organization at the time the technical report is prepared.
For an organization to be a recognized professional organization, it must:
(A)    Be either:
(1)    An organization recognized within the mining industry as a reputable professional association, or
(2)    A board authorized by U.S. federal, state or foreign statute to regulate professionals in the mining, geoscience or related field;
(B)    Admit eligible members primarily on the basis of their academic qualifications and experience;
(C)    Establish and require compliance with professional standards of competence and ethics;
(D)    Require or encourage continuing professional development;
(E)    Have and apply disciplinary powers, including the power to suspend or expel a member regardless of where the member practices or resides; and;
(F)    Provide a public list of members in good standing.
raiseA vertical or inclined underground working that has been excavated from the bottom upward
reclamationThe restoration of a site after mining or exploration activity is completed.
refiningA high temperature process in which impure metal is reacted with flux to reduce the impurities. The metal is collected in a molten layer and the impurities in a slag layer. Refining results in the production of a marketable material.
refractoryGold mineralization normally requiring more sophisticated processing technology for extraction, such as roasting or autoclaving under pressure.
resistivityObservation of electric fields caused by current introduced into the ground as a means of studying earth resistivity in geophysical exploration. Resistivity is the property of a material that resists the flow of electrical current
roastingA high temperature oxidation process for refractory ores or concentrates. The material is reacted with air (possibly enriched with oxygen) to convert sulfur in sulfides to sulfur dioxide. Other constituents in ore (e.g. C, Fe) are also oxidized. The resulting calcine can then be leached with cyanide, resulting in economic gold recoveries.
rock quality designation (RQD)A measure of the competency of a rock, determined by the number of fractures in a given length of drill core. For example, a friable ore will have many fractures and a low RQD.
royaltyAn amount of money paid at regular intervals by the lessee or operator of an exploration or mining property to the owner of the ground. Generally based on a specific amount per tonne or a percentage of the total production or profits. Also, the fee paid for the right to use a patented process.
run-of-mine (ROM)Rehandle where the raw mine ore material is fed into the processing plant’s system, usually the crusher. This is where material that is not direct feed from the mine is stockpiled for later feeding. Run-of-mine relates to the rehandle being for any mine material, regardless of source, before entry into the processing plant’s system.
semi-autogenous grinding (SAG)A method of grinding rock into fine powder whereby the grinding media consists of larger chunks of rocks and steel balls.
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Term
Definition
shaftA vertical or inclined excavation for the purpose of opening and servicing a mine. It is usually equipped with a hoist at the top, which lowers and raises a conveyance for handling men and material
specific gravityThe weight of a substance compared with the weight of an equal volume of pure water at 4°C.
stopeAn excavation in a mine, other than development workings, made for the purpose of extracting ore.
strike lengthThe horizontal distance along the long axis of a structural surface, rock unit, mineral deposit or geochemical anomaly.
tailingsMaterial rejected from a mill after the recoverable valuable minerals have been extracted.
tunnelA horizontal underground passage that is open at both ends; the term is loosely applied in many cases to an adit, which is open at only one end
underhand drift and fillThe orebody is initially mined using a horizontal slice. The mined-out slice is then backfilled to provide additional support for the country rock surrounding the stope. The backfilled material forms the roof for executing the next, lower slice. In effect, in underhand cut-and-fill, the ore lies underneath the working area and the roof is backfill.
uniaxial compressive strengthA measure of the strength of a rock, which can be determined through laboratory testing, and used both for predicting ground stability underground, and the relative difficulty of crushing.
triaxial compressive strengthA test for the compressive strength in all directions of a rock or soil sample
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25.0    RELIANCE ON INFORMATION PROVIDED BY THE REGISTRANT
25.1    Introduction
The QP relied upon Barrick Gold Corporation, as the operator of NGM for the information used in the areas noted in the following sub-sections.
The NGM joint venture is governed pursuant to an operating agreement entered into on July 1, 2019 between Barrick and the registrant and their wholly-owned subsidiaries party thereto (JV Agreement). Under the terms of the JV Agreement, the registrant holds a 38.5% economic interest and Barrick holds a 61.5% economic interest in NGM. Barrick operates NGM with overall management responsibility and is subject to the supervision and direction of NGM’s Board of Managers, which is comprised of three managers appointed by the Operator and two managers appointed by the registrant. Outside of certain prescribed matters, decisions of the Board of Managers will be determined by a majority vote. The registrant also has representatives on the joint venture’s advisory committees, including its advisory technical, finance and exploration committees. The QP does not serve on the Board of Managers or the advisory committees. Given that the registrant does not have a majority interest, does not operate NGM and has more limited access, the registrant is required to rely upon Barrick for information.
The QP considers it reasonable to rely upon Barrick for the information identified in those sub-sections, for the following reasons:
Barrick has held overall management and operational responsibility of NGM since July 2019;
The JV Agreement requires Barrick to provide the registrant with reports of mineral reserves and resources sufficient to comply with securities laws and any other technical information reasonably requested by the registrant to permit it to comply with the reporting and disclosure obligations, as well as financial information, project and budget reports, certain guidance estimates, and other reports;
The registrant has employed industry professionals with expertise to review the annual reserve and resource information provided by Barrick, and employs individuals with considerable experience in each of these areas listed in the following sub-sections who have also reviewed the information provided by Barrick;
Like the registrant, Barrick has considerable experience in each of these areas and has employed industry professionals with expertise in the areas listed in the following sub-sections;
Both the registrant and Barrick have formal systems of oversight and governance over these activities.
25.2    Macroeconomic Trends
Information relating to inflation, interest rates, discount rates, exchange rates, and taxes was obtained from Barrick.
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This information is used in the economic analysis in Chapter 19. It supports the assessment of reasonable prospects for economic extraction of the mineral resource estimates in Chapter 11, and inputs to the determination of economic viability of the mineral reserve estimates in Chapter 12.
25.3    Markets
Information relating to market studies/markets for product, market entry strategies, marketing and sales contracts, product valuation, product specifications, refining and treatment charges, transportation costs, agency relationships, material contracts (e.g., mining, concentrating, smelting, refining, transportation, handling, hedging arrangements, and forward sales contracts), and contract status (in place, renewals), was obtained from Barrick.
This information is used in the economic analysis in Chapter 19. It supports the assessment of reasonable prospects for economic extraction of the mineral resource estimates in Chapter 11, and inputs to the determination of economic viability of the mineral reserve estimates in Chapter 12.
25.4    Legal Matters
Information relating to the corporate ownership interest, the mineral tenure (concessions, payments to retain property rights, obligations to meet expenditure/reporting of work conducted), surface rights, water rights (water take allowances), royalties, encumbrances, easements and rights-of-way, violations, and fines, permitting requirements, and the ability to maintain and renew permits was obtained from Barrick.
This information is used in support of the property description and ownership information in Chapter 3, the permitting and mine closure descriptions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
25.5    Environmental Matters
Information relating to baseline and supporting studies for environmental permitting, and monitoring requirements, ability to maintain and renew permits, emissions controls, closure planning, closure and reclamation bonding and bonding requirements, sustainability accommodations, and monitoring for and compliance with requirements relating to protected areas and protected species was obtained from Barrick.
This information is used when discussing property ownership information in Chapter 3, the permitting and closure discussions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
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25.6    Stakeholder Accommodations
Information relating to social and stakeholder baseline and supporting studies, hiring and training policies for workforce from local communities, partnerships with stakeholders (including national, regional, and state mining associations; trade organizations; fishing organizations; state and local chambers of commerce; economic development organizations; non-government organizations; and, state and federal governments), and the community relations plan was obtained from Barrick.
This information is used in the social and community discussions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
25.7    Governmental Factors
Information relating to taxation and royalty considerations, monitoring requirements and monitoring frequency, bonding requirements, violations, and fines was obtained from Barrick.
This information is used in the discussion on royalties and property encumbrances in Chapter 3, the monitoring, permitting and closure discussions in Chapter 17, and the economic analysis in Chapter 19. It supports the reasonable prospects of economic extraction for the mineral resource estimates in Chapter 11, and the assumptions used in demonstrating economic viability of the mineral reserve estimates in Chapter 12.
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